Search Results

Search found 62199 results on 2488 pages for 'first order logic'.

Page 162/2488 | < Previous Page | 158 159 160 161 162 163 164 165 166 167 168 169  | Next Page >

• Windows Azure AppFabric: ServiceBus Queue WPF Sample

  - by xamlnotes

  The latest version of the AppFabric ServiceBus now has support for queues and topics. Today I will show you a bit about using queues and also talk about some of the best practices in using them. If you are just getting started, you can check out this site for more info on Windows Azure. One of the 1st things I thought if when Azure was announced back when was how we handle fault tolerance. Web sites hosted in Azure are no much of an issue unless they are using SQL Azure and then you must account for potential fault or latency issues. Today I want to talk a bit about ServiceBus and how to handle fault tolerance.  And theres stuff like connecting to the servicebus and so on you have to take care of. To demonstrate some of the things you can do, let me walk through this sample WPF app that I am posting for you to download. To start off, the application is going to need things like the servicenamespace, issuer details and so forth to make everything work.  To facilitate this I created settings in the wpf app for all of these items. Then I mapped a static class to them and set the values when the program loads like so: StaticElements.ServiceNamespace = Convert.ToString(Properties.Settings.Default["ServiceNamespace"]); StaticElements.IssuerName = Convert.ToString(Properties.Settings.Default["IssuerName"]); StaticElements.IssuerKey = Convert.ToString(Properties.Settings.Default["IssuerKey"]); StaticElements.QueueName = Convert.ToString(Properties.Settings.Default["QueueName"]);   Now I can get to each of these elements plus some other common values or instances directly from the StaticElements class. Now, lets look at the application.  The application looks like this when it starts:   The blue graphic represents the queue we are going to use.  The next figure shows the form after items were added and the queue stats were updated . You can see how the queue has grown: To add an item to the queue, click the Add Order button which displays the following dialog: After you fill in the form and press OK, the order is published to the ServiceBus queue and the form closes. The application also allows you to read the queued items by clicking the Process Orders button. As you can see below, the form shows the queued items in a list and the  queue has disappeared as its now empty. In real practice we normally would use a Windows Service or some other automated process to subscribe to the queue and pull items from it. I created a class named ServiceBusQueueHelper that has the core queue features we need. There are three public methods: * GetOrCreateQueue – Gets an instance of the queue description if the queue exists. if not, it creates the queue and returns a description instance. * SendMessageToQueue = This method takes an order instance and sends it to the queue. The call to the queue is wrapped in the ExecuteAction method from the Transient Fault Tolerance Framework and handles all the retry logic for the queue send process. * GetOrderFromQueue – Grabs an order from the queue and returns a typed order from the queue. It also marks the message complete so the queue can remove it.   Now lets turn to the WPF window code (MainWindow.xaml.cs). The constructor contains the 4 lines shown about to setup the static variables and to perform other initialization tasks. The next few lines setup certain features we need for the ServiceBus: TokenProvider credentials = TokenProvider.CreateSharedSecretTokenProvider(StaticElements.IssuerName, StaticElements.IssuerKey); Uri serviceUri = ServiceBusEnvironment.CreateServiceUri("sb", StaticElements.ServiceNamespace, string.Empty); StaticElements.CurrentNamespaceManager = new NamespaceManager(serviceUri, credentials); StaticElements.CurrentMessagingFactory = MessagingFactory.Create(serviceUri, credentials); The next two lines update the queue name label and also set the timer to 20 seconds.             QueueNameLabel.Content = StaticElements.QueueName;             _timer.Interval = TimeSpan.FromSeconds(20);             Next I call the UpdateQueueStats to initialize the UI for the queue:             UpdateQueueStats();             _timer.Tick += new EventHandler(delegate(object s, EventArgs a)                         {                      UpdateQueueStats();                  });             _timer.Start();         } The UpdateQueueStats method shown below. You can see that it uses the GetOrCreateQueue method mentioned earlier to grab the queue description, then it can get the MessageCount property.         private void UpdateQueueStats()         {             _queueDescription = _serviceBusQueueHelper.GetOrCreateQueue();             QueueCountLabel.Content = "(" + _queueDescription.MessageCount + ")";             long count = _queueDescription.MessageCount;             long queueWidth = count * 20;             QueueRectangle.Width = queueWidth;             QueueTickCount += 1;             TickCountlabel.Content = QueueTickCount.ToString();         }   The ReadQueueItemsButton_Click event handler calls the GetOrderFromQueue method and adds the order to the listbox. If you look at the SendQueueMessageController, you can see the SendMessage method that sends an order to the queue. Its pretty simple as it just creates a new CustomerOrderEntity instance,fills it and then passes it to the SendMessageToQueue. As you can see, all of our interaction with the queue is done through the helper class (ServiceBusQueueHelper). Now lets dig into the helper class. First, before you create anything like this, download the Transient Fault Handling Framework. Microsoft provides this free and they also provide the C# source. Theres a great article that shows how to use this framework with ServiceBus. I included the entire ServiceBusQueueHelper class in List 1. Notice the using statements for TransientFaultHandling: using Microsoft.AzureCAT.Samples.TransientFaultHandling; using Microsoft.AzureCAT.Samples.TransientFaultHandling.ServiceBus; The SendMessageToQueue in Listing 1 shows how to use the async send features of ServiceBus with them wrapped in the Transient Fault Handling Framework.  It is not much different than plain old ServiceBus calls but it sure makes it easy to have the fault tolerance added almost for free. The GetOrderFromQueue uses the standard synchronous methods to access the queue. The best practices article walks through using the async approach for a receive operation also.  Notice that this method makes a call to Receive to get the message then makes a call to GetBody to get a new strongly typed instance of CustomerOrderEntity to return. Listing 1 using System; using System.Collections.Generic; using System.Linq; using System.Text; using Microsoft.AzureCAT.Samples.TransientFaultHandling; using Microsoft.AzureCAT.Samples.TransientFaultHandling.ServiceBus; using Microsoft.ServiceBus; using Microsoft.ServiceBus.Messaging; using System.Xml.Serialization; using System.Diagnostics; namespace WPFServicebusPublishSubscribeSample {     class ServiceBusQueueHelper     {         RetryPolicy currentPolicy = new RetryPolicy<ServiceBusTransientErrorDetectionStrategy>(RetryPolicy.DefaultClientRetryCount);         QueueClient currentQueueClient;         public QueueDescription GetOrCreateQueue()         {                        QueueDescription queue = null;             bool createNew = false;             try             {                 // First, let's see if a queue with the specified name already exists.                 queue = currentPolicy.ExecuteAction<QueueDescription>(() => { return StaticElements.CurrentNamespaceManager.GetQueue(StaticElements.QueueName); });                 createNew = (queue == null);             }             catch (MessagingEntityNotFoundException)             {                 // Looks like the queue does not exist. We should create a new one.                 createNew = true;             }             // If a queue with the specified name doesn't exist, it will be auto-created.             if (createNew)             {                 try                 {                     var newqueue = new QueueDescription(StaticElements.QueueName);                     queue = currentPolicy.ExecuteAction<QueueDescription>(() => { return StaticElements.CurrentNamespaceManager.CreateQueue(newqueue); });                 }                 catch (MessagingEntityAlreadyExistsException)                 {                     // A queue under the same name was already created by someone else,                     // perhaps by another instance. Let's just use it.                     queue = currentPolicy.ExecuteAction<QueueDescription>(() => { return StaticElements.CurrentNamespaceManager.GetQueue(StaticElements.QueueName); });                 }             }             currentQueueClient = StaticElements.CurrentMessagingFactory.CreateQueueClient(StaticElements.QueueName);             return queue;         }         public void SendMessageToQueue(CustomerOrderEntity Order)         {             BrokeredMessage msg = null;             GetOrCreateQueue();             // Use a retry policy to execute the Send action in an asynchronous and reliable fashion.             currentPolicy.ExecuteAction             (                 (cb) =>                 {                     // A new BrokeredMessage instance must be created each time we send it. Reusing the original BrokeredMessage instance may not                     // work as the state of its BodyStream cannot be guaranteed to be readable from the beginning.                     msg = new BrokeredMessage(Order);                     // Send the event asynchronously.                     currentQueueClient.BeginSend(msg, cb, null);                 },                 (ar) =>                 {                     try                     {                         // Complete the asynchronous operation.                         // This may throw an exception that will be handled internally by the retry policy.                         currentQueueClient.EndSend(ar);                     }                     finally                     {                         // Ensure that any resources allocated by a BrokeredMessage instance are released.                         if (msg != null)                         {                             msg.Dispose();                             msg = null;                         }                     }                 },                 (ex) =>                 {                     // Always dispose the BrokeredMessage instance even if the send                     // operation has completed unsuccessfully.                     if (msg != null)                     {                         msg.Dispose();                         msg = null;                     }                     // Always log exceptions.                     Trace.TraceError(ex.Message);                 }             );         }                 public CustomerOrderEntity GetOrderFromQueue()         {             CustomerOrderEntity Order = new CustomerOrderEntity();             QueueClient myQueueClient = StaticElements.CurrentMessagingFactory.CreateQueueClient(StaticElements.QueueName, ReceiveMode.PeekLock);             BrokeredMessage message;             ServiceBusQueueHelper serviceBusQueueHelper = new ServiceBusQueueHelper();             QueueDescription queueDescription;             queueDescription = serviceBusQueueHelper.GetOrCreateQueue();             if (queueDescription.MessageCount > 0)             {                 message = myQueueClient.Receive(TimeSpan.FromSeconds(90));                 if (message != null)                 {                     try                     {                         Order = message.GetBody<CustomerOrderEntity>();                         message.Complete();                     }                     catch (Exception ex)                     {                         throw ex;                     }                 }                 else                 {                     throw new Exception("Did not receive the messages");                 }             }             return Order;         }     } } I will post a link to the download demo in a separate post soon.

  Read the article

• NHibernate Pitfalls: Loading Foreign Key Properties

  - by Ricardo Peres

  This is part of a series of posts about NHibernate Pitfalls. See the entire collection here. When saving a new entity that has references to other entities (one to one, many to one), one has two options for setting their values: Load each of these references by calling ISession.Get and passing the foreign key; Load a proxy instead, by calling ISession.Load with the foreign key. So, what is the difference? Well, ISession.Get goes to the database and tries to retrieve the record with the given key, returning null if no record is found. ISession.Load, on the other hand, just returns a proxy to that record, without going to the database. This turns out to be a better option, because we really don’t need to retrieve the record – and all of its non-lazy properties and collections -, we just need its key. An example: 1: //going to the database 2: OrderDetail od = new OrderDetail(); 3: od.Product = session.Get<Product>(1); //a product is retrieved from the database 4: od.Order = session.Get<Order>(2); //an order is retrieved from the database 5:  6: session.Save(od); 7:  8: //creating in-memory proxies 9: OrderDetail od = new OrderDetail(); 10: od.Product = session.Load<Product>(1); //a proxy to a product is created 11: od.Order = session.Load<Order>(2); //a proxy to an order is created 12:  13: session.Save(od); So, if you just need to set a foreign key, use ISession.Load instead of ISession.Get.

  Read the article

• SQL SERVER – Introduction to PERCENT_RANK() – Analytic Functions Introduced in SQL Server 2012

  - by pinaldave

  SQL Server 2012 introduces new analytical functions PERCENT_RANK(). This function returns relative standing of a value within a query result set or partition. It will be very difficult to explain this in words so I’d like to attempt to explain its function through a brief example. Instead of creating a new table, I will be using the AdventureWorks sample database as most developers use that for experiment purposes. Now let’s have fun following query: USE AdventureWorks GO SELECT SalesOrderID, OrderQty, RANK() OVER(ORDER BY SalesOrderID) Rnk, PERCENT_RANK() OVER(ORDER BY SalesOrderID) AS PctDist FROM Sales.SalesOrderDetail WHERE SalesOrderID IN (43670, 43669, 43667, 43663) ORDER BY PctDist DESC GO The above query will give us the following result: Now let us understand the resultset. You will notice that I have also included the RANK() function along with this query. The reason to include RANK() function was as this query is infect uses RANK function and find the relative standing of the query. The formula to find PERCENT_RANK() is as following: PERCENT_RANK() = (RANK() – 1) / (Total Rows – 1) If you want to read more about this function read here. Now let us attempt the same example with PARTITION BY clause USE AdventureWorks GO SELECT SalesOrderID, OrderQty, ProductID, RANK() OVER(PARTITION BY SalesOrderID ORDER BY ProductID ) Rnk, PERCENT_RANK() OVER(PARTITION BY SalesOrderID ORDER BY ProductID ) AS PctDist FROM Sales.SalesOrderDetail s WHERE SalesOrderID IN (43670, 43669, 43667, 43663) ORDER BY PctDist DESC GO Now you will notice that the same logic is followed in follow result set. I have now quick question to you – how many of you know the logic/formula of PERCENT_RANK() before this blog post? Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Function, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology

  Read the article

• Variant Management– Which Approach fits for my Product?

  - by C. Chadwick

  Jürgen Kunz – Director Product Development – Oracle ORACLE Deutschland B.V. & Co. KG Introduction In a difficult economic environment, it is important for companies to understand the customer requirements in detail and to address them in their products. Customer specific products, however, usually cause increased costs. Variant management helps to find the best combination of standard components and custom components which balances customer’s product requirements and product costs. Depending on the type of product, different approaches to variant management will be applied. For example the automotive product “car” or electronic/high-tech products like a “computer”, with a pre-defined set of options to be combined in the individual configuration (so called “Assembled to Order” products), require a different approach to products in heavy machinery, which are (at least partially) engineered in a customer specific way (so-called “Engineered-to Order” products). This article discusses different approaches to variant management. Starting with the simple Bill of Material (BOM), this article presents three different approaches to variant management, which are provided by Agile PLM. Single level BOM and Variant BOM The single level BOM is the basic form of the BOM. The product structure is defined using assemblies and single parts. A particular product is thus represented by a fixed product structure. As soon as you have to manage product variants, the single level BOM is no longer sufficient. A variant BOM will be needed to manage product variants. The variant BOM is sometimes referred to as 150% BOM, since a variant BOM contains more parts and assemblies than actually needed to assemble the (final) product – just 150% of the parts You can evolve the variant BOM from the single level BOM by replacing single nodes with a placeholder node. The placeholder in this case represents the possible variants of a part or assembly. Product structure nodes, which are part of any product, are so-called “Must-Have” parts. “Optional” parts can be omitted in the final product. Additional attributes allow limiting the quantity of parts/assemblies which can be assigned at a certain position in the Variant BOM. Figure 1 shows the variant BOM of Agile PLM. Figure 1 Variant BOM in Agile PLM During the instantiation of the Variant BOM, the placeholders get replaced by specific variants of the parts and assemblies. The selection of the desired or appropriate variants is either done step by step by the user or by applying pre-defined configuration rules. As a result of the instantiation, an independent BOM will be created (Figure 2). Figure 2 Instantiated BOM in Agile PLM This kind of Variant BOM  can be used for „Assembled –To-Order“ type products as well as for „Engineered-to-Order“-type products. In case of “Assembled –To-Order” type products, typically the instantiation is done automatically with pre-defined configuration rules. For „Engineered- to-Order“-type products at least part of the product is selected manually to make use of customized parts/assemblies, that have been engineered according to the specific custom requirements. Template BOM The Template BOM is used for „Engineered-to-Order“-type products. It is another type of variant BOM. The engineer works in a flexible environment which allows him to build the most creative solutions. At the same time the engineer shall be guided to re-use existing solutions and it shall be assured that product variants of the same product family share the same base structure. The template BOM defines the basic structure of products belonging to the same product family. Let’s take a gearbox as an example. The customer specific configuration of the gearbox is influenced by several parameters (e.g. rpm range, transmitted torque), which are defined in the customer’s requirement document.  Figure 3 shows part of a Template BOM (yellow) and its relation to the product family hierarchy (blue).  Figure 3 Template BOM Every component of the Template BOM has links to the variants that have been engineeried so far for the component (depending on the level in the Template BOM, they are product variants, Assembly Variant or single part variants). This library of solutions, the so-called solution space, can be used by the engineers to build new product variants. In the best case, the engineer selects an existing solution variant, such as the gearbox shown in figure 3. When the existing variants do not fulfill the specific requirements, a new variant will be engineered. This new variant must be compliant with the given Template BOM. If we look at the gearbox in figure 3  it must consist of a transmission housing, a Connecting Plate, a set of Gears and a Planetary transmission – pre-assumed that all components are must have components. The new variant will enhance the solution space and is automatically available for re-use in future variants. The result of the instantiation of the Template BOM is a stand-alone BOM which represents the customer specific product variant. Modular BOM The concept of the modular BOM was invented in the automotive industry. Passenger cars are so-called „Assembled-to-Order“-products. The customer first selects the specific equipment of the car (so-called specifications) – for instance engine, audio equipment, rims, color. Based on this information the required parts will be determined and the customer specific car will be assembled. Certain combinations of specification are not available for the customer, because they are not feasible from technical perspective (e.g. a convertible with sun roof) or because the combination will not be offered for marketing reasons (e.g. steel rims with a sports line car). The modular BOM (yellow structure in figure 4) is defined in the context of a specific product family (in the sample it is product family „Speedstar“). It is the same modular BOM for the different types of cars of the product family (e.g. sedan, station wagon). The assembly or single parts of the car (blue nodes in figure 4) are assigned at the leaf level of the modular BOM. The assignment of assembly and parts to the modular BOM is enriched with a configuration rule (purple elements in figure 4). The configuration rule defines the conditions to use a specific assembly or single part. The configuration rule is valid in the context of a type of car (green elements in figure 4). Color specific parts are assigned to the color independent parts via additional configuration rules (grey elements in figure 4). The configuration rules use Boolean operators to connect the specifications. Additional consistency rules (constraints) may be used to define invalid combinations of specification (so-called exclusions). Furthermore consistency rules may be used to add specifications to the set of specifications. For instance it is important that a car with diesel engine always is build using the high capacity battery.  Figure 4 Modular BOM The calculation of the car configuration consists of several steps. First the consistency rules (constraints) are applied. Resulting from that specification might be added automatically. The second step will determine the assemblies and single parts for the complete structure of the modular BOM, by evaluating the configuration rules in the context of the current type of car. The evaluation of the rules for one component in the modular BOM might result in several rules being fulfilled. In this case the most specific rule (typically the longest rule) will win. Thanks to this approach, it is possible to add a specific variant to the modular BOM without the need to change any other configuration rules.  As a result the whole set of configuration rules is easy to maintain. Finally the color specific assemblies respective parts will be determined and the configuration is completed. Figure 5 Calculated Car Configuration The result of the car configuration is shown in figure 5. It shows the list of assemblies respective single parts (blue components in figure 5), which are required to build the customer specific car. Summary There are different approaches to variant management. Three different approaches have been presented in this article. At the end of the day, it is the type of the product which decides about the best approach.  For „Assembled to Order“-type products it is very likely that you can define the configuration rules and calculate the product variant automatically. Products of type „Engineered-to-Order“ ,however, need to be engineered. Nevertheless in the majority of cases, part of the product structure can be generated automatically in a similar way to „Assembled to Order“-tape products.  That said it is important first to analyze the product portfolio, in order to define the best approach to variant management.

  Read the article

• Multicast hostname lookups on OSX

  - by KARASZI István

  I have a problem with hostname lookups on my OSX computer. According to Apple's HK3473 document it says for v10.6: Host names that contain only one label in addition to local, for example "My-Computer.local", are resolved using Multicast DNS (Bonjour) by default. Host names that contain two or more labels in addition to local, for example "server.domain.local", are resolved using a DNS server by default. Which is not true as my testing. If I try to open a connection on my local computer to a remote port: telnet example.domain.local 22 then it will lookup the IP address with multicast DNS next to the A and AAAA lookups. This causes a two seconds lookup timeout on every lookup. Which is a lot! When I try with IPv4 only then it won't use the multicast queries to fetch the remote address just the simple A queries. telnet -4 example.domain.local 22 When I try with IPv6 only: telnet -6 example.domain.local 22 then it will lookup with multicast DNS and AAAA again, and the 2 seconds timeout delay occurs again. I've tried to create a resolver entry to my /etc/resolver/domain.local, and /etc/resolver/local.1, but none of them was working. Is there any way to disable this multicast lookups for the "two or more label addition to local" domains, or simply disable it for the selected subdomain (domain.local)? Thank you! Update #1 Thanks @mralexgray for the scutil --dns command, now I can see my domain in the list, but it's late in the order: DNS configuration resolver #1 domain : adverticum.lan nameserver[0] : 192.168.1.1 order : 200000 resolver #2 domain : local options : mdns timeout : 2 order : 300000 resolver #3 domain : 254.169.in-addr.arpa options : mdns timeout : 2 order : 300200 resolver #4 domain : 8.e.f.ip6.arpa options : mdns timeout : 2 order : 300400 resolver #5 domain : 9.e.f.ip6.arpa options : mdns timeout : 2 order : 300600 resolver #6 domain : a.e.f.ip6.arpa options : mdns timeout : 2 order : 300800 resolver #7 domain : b.e.f.ip6.arpa options : mdns timeout : 2 order : 301000 resolver #8 domain : domain.local nameserver[0] : 192.168.1.1 order : 200001 Maybe it would work if I could move the resolver #8 to the position #2. Update #2 No probably won't work because the local DNS server on 192.168.1.1 answering for domain.local requests and it's before the mDNS (resolver #2). Update #3 I could decrease the mDNS timeout in /System/Library/SystemConfiguration/IPMonitor.bundle/Contents/Info.plist file, which speeds up the lookups a little, but this is not the solution.

  Read the article

• what differs a computer scientist/software engineer to regular people who learn programming language and APIs?

  - by Amumu

  In University, we learn and reinvent the wheel a lot to truly learn the programming concepts. For example, we may learn assembly language to understand, what happens inside the box, and how the system operates, when we execute our code. This helps understanding higher level concepts deeper. For example, memory management like in C is just an abstraction of manually managed memory contents and addresses. The problem is, when we're going to work, usually productivity is required more. I could program my own containers, or string class, or date/time (using POSIX with C system call) to do the job, but then, it would take much longer time to use existing STL or Boost library, which abstract all of those thing and very easy to use. This leads to an issue, that a regular person doesn't need to get through all the low level/under the hood stuffs, who learns only one programming language and using language-related APIs. These people may eventually compete with the mainstream graduates from computer science or software engineer and call themselves programmers. At first, I don't think it's valid to call them programmers. I used to think, a real programmer needs to understand the computer deeply (but not at the electronic level). But then I changed my mind. After all, they get the job done and satisfy all the test criteria (logic, performance, security...), and in business environment, who cares if you're an expert and understand how computer works or not. You may get behind the "amateurs" if you spend to much time learning about how things work inside. It is totally valid for those people to call themselves programmers. This makes me confuse. So, after all, programming should be considered an universal skill? Does programming language and concepts matter or the problems we solve matter? For example, many C/C++ vs Java and other high level language, one of the main reason is because C/C++ features performance, as well as accessing low level facility. One of the main reason (in my opinion), is coding in C/C++ seems complex, so people feel good about it (not trolling anyone, just my observation, and my experience as well. Try to google "C hacker syndrome"). While Java on the other hand, made for simplifying programming tasks to help developers concentrate on solving their problems. Based on Java rationale, if the programing language keeps evolve, one day everyone can map their logic directly with natural language. Everyone can program. On that day, maybe real programmers are mathematicians, who could perform most complex logic (including business logic and academic logic) without worrying about installing/configuring compiler, IDEs? What's our job as a computer scientist/software engineer? To solve computer specific problems or to solve problems in general? For example, take a look at this exame: http://cm.baylor.edu/ICPCWiki/attach/Problem%20Resources/2010WorldFinalProblemSet.pdf . The example requires only basic knowledge about the programming language, but focus more on problem solving with the language. In sum, what differs a computer scientist/software engineer to regular people who learn programming language and APIs? A mathematician can be considered a programmer, if he is good enough to use programming language to implement his formula. Can we programmer do this? Probably not for most of us, since we specialize about computer, not math. An electronic engineer, who learns how to use C to program for his devices, can be considered a programmer. If the programming languages keep being simplified, may one day the software engineers, who implements business logic and create softwares, be obsolete? (Not for computer scientist though, since many of the CS topics are scientific, and science won't change, but technology will).

  Read the article

• Work Execution in EAM

  - by Annemarie Provisero

  ADVISOR WEBCAST: Work Execution in EAM PRODUCT FAMILY: Manufacturing Enterprise Asset Management July 5, 2011 at 8 am PT, 9 am MT, 11 am ET The purpose of this webcast is to discuss EAM Work Order Management. This one-hour session is ideal for Functional Users, System Administrators, Database Administrators, and Customers with a basic knowledge of EAM and who raise or manage work orders and related processes. During this webcast, Zar will cover the various types of work orders and look at all the related activities associated with work orders including: setup, operations, tasks, work order transactions, relationship and planning. TOPICS WILL INCLUDE: Work Order Types (Routine, Planned Maintenance, Rebuild, Easy) Work Order statuses and other important setups Operations and Tasks Relationships Work Order Transactions Work Order Planning A short, live demonstration (only if applicable) and question and answer period will be included. Oracle Advisor Webcasts are dedicated to building your awareness around our products and services. This session does not replace offerings from Oracle Global Support Services. Click here to register for this session ------------------------------------------------------------------------------------------------------------- The above webcast is a service of the E-Business Suite Communities in My Oracle Support. For more information on other webcasts, please reference the Oracle Advisor Webcast Schedule.Click here to visit the E-Business Communities in My Oracle Support Note that all links require access to My Oracle Support.

  Read the article

• MongoDB: Replicate data in documents vs. “join”

  - by JavierCane

  Disclaimer: This is a question derived from this one. What do you think about the following example of use case? I have a table containing orders. These orders has a lot of related information needed by my current queries (think about the products; the buyer information; the region, country and state of the sale point; and so on) In order to think with a de-normalized approach, I don't have to put identifiers of these related items in my main orders collection. Instead, I have to repeat all the information for each order (ie: I will repeat the buyer's name, surname, etc. for each of its orders). Assuming the previous premise, I'm committing to maintain all the data related to an order without a lot of updates (because if I modify the buyer's name, I'll have to iterate through all orders updating the ones made by the same buyer, and as MongoDB blocks at a document level on updates, I would be blocking the entire order at the update moment). I'll have to replicate all the products' related data? (ie: category, maker and optional attributes like color, size…) What if a new feature is requested and I've to make a lot of queries with the products "as the entry point of the query"? (ie: reports showing the products' sales performance grouping by region, country, or whatever) Is it fair enough to apply the $unwind operation to my orders original collection? (What about the performance?) I should have to do another collection with these queries in mind and replicate again all the products' information (and their orders)? Wouldn't be better to store a product_id in the original orders collection in order to be more tolerable to requirements change? (What about emulating JOINs?) The optimal approach would be a mixed solution with a RDBMS system like MySQL in order to retrieve the complete data? I mean: store products, users, and location identifiers in the orders collection and have queries in MySQL like getAllUsersDataByIds in which I would perform a SELECT * FROM users WHERE user_id IN ( :identifiers_retrieved_from_the_mongodb_query )

  Read the article

• Most common parts of a SELECT SQL query?

  - by jnrbsn

  I'm writing a function that generates a SELECT SQL query. (I'm not looking for a tool that already does this.) My function currently takes the following arguments which correspond to different parts of the SELECT query (the base table name is already known): where order fields joins group limit All of these arguments will be optional so that the function generates something like this by default: SELECT * FROM `table_name` I want to order the arguments so that the most often used parts of a SELECT query are first. That way the average call to the function will use as few of the arguments as possible rather than passing a null value or something like that to skip an argument. For example, if someone wanted to use the 1st and 3rd arguments but not the rest, they might have to pass a null value as the 2nd argument in order to skip it. So, for general purpose use, how should I order the arguments? Edit: To be more precise, out of the query parts I listed above, what is the order from most used to least used? Also, I'm not looking for solutions that allow me to not have to specify the order. Edit #2: The "fields" argument will default to "*" (i.e all fields/columns).

  Read the article

• What is a Relational Database Management System (RDBMS)?

  A Relational Database Management System (RDBMS)  can also be called a traditional database that uses a Structured Query Language (SQL) to provide access to stored data while insuring the integrity of the data. The data is stored in a collection of tables that is defined by relationships between data items. In addition, data permitted to be joined in new relationships. Traditional databases primarily process data through transactions called transaction processing. Transaction processing is the methodology of grouping related business operations based predefined business events. An example of this can be seen when a person attempts to purchase an item from an online e-tailor. The business must execute specific operations for a related  business event. In this case, a business must store the following information: Customer Info, Order Info, Order Item Info, Customer Payment Data, Payment Results, and Current Order Status. Example: Pseudo SQL Operations needed for processing an online e-tailor sale. Insert Customer into Customers Insert New Order into Orders Insert Each New Order Item into OrderItems Insert Customer Payment Info into PaymentInfo Insert Payment Processing Result into PaymentDetails Update Customer for Current Order Status Common Relational Database Management System Microsoft SQL Server Microsoft Access Oracle MySQL DB2 It is important to note that no current RDBMS has fully implemented all of the Relational Principles. Common RDBMS Traits Volatile Data Supports Transaction Processing Optimized for Updates and Simple Queries 

  Read the article

• SCO Bankruptcy - The Dec. 30, 2009 Hearing Transcript &amp; Order Giving Darl the Mobility ...

  <b>Groklaw:</b> "I view the bankruptcy hearings at this point as comic relief, since nothing goes the way any of us here think they should. Bankruptcy court seems like cartoon court to me. So, when I heard that the December 2009 hearing transcript [PDF] was available, I said, Oh, goody!"

  Read the article

• Set the time for E-Mail sending from your .NET Application

  Time triggered mailing which can help you to win over first in first come first serve situation

  Read the article

• WTSVirtualChannelRead Only reads the first letter of the string.

  - by Scott Chamberlain

  I am trying to write a hello world type program for using virtual channels in the windows terminal services client. public partial class Form1 : Form { public Form1() { InitializeComponent(); } IntPtr mHandle = IntPtr.Zero; private void Form1_Load(object sender, EventArgs e) { mHandle = NativeMethods.WTSVirtualChannelOpen(IntPtr.Zero, -1, "TSCRED"); if (mHandle == IntPtr.Zero) { throw new Win32Exception(Marshal.GetLastWin32Error()); } } private void button1_Click(object sender, EventArgs e) { uint bufferSize = 1024; StringBuilder buffer = new StringBuilder(); uint bytesRead; NativeMethods.WTSVirtualChannelRead(mHandle, 0, buffer, bufferSize, out bytesRead); if (bytesRead == 0) { MessageBox.Show("Got no Data"); } else { MessageBox.Show("Got data: " + buffer.ToString()); } } protected override void Dispose(bool disposing) { if (mHandle != System.IntPtr.Zero) { NativeMethods.WTSVirtualChannelClose(mHandle); } base.Dispose(disposing); } } internal static class NativeMethods { [DllImport("Wtsapi32.dll")] public static extern IntPtr WTSVirtualChannelOpen(IntPtr server, int sessionId, [MarshalAs(UnmanagedType.LPStr)] string virtualName); //[DllImport("Wtsapi32.dll", SetLastError = true)] //public static extern bool WTSVirtualChannelRead(IntPtr channelHandle, long timeout, // byte[] buffer, int length, ref int bytesReaded); [DllImport("Wtsapi32.dll")] public static extern bool WTSVirtualChannelClose(IntPtr channelHandle); [DllImport("Wtsapi32.dll", EntryPoint = "WTSVirtualChannelRead")] [return: MarshalAs(UnmanagedType.Bool)] public static extern bool WTSVirtualChannelRead( [In()] System.IntPtr hChannelHandle , uint TimeOut , [Out()] [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder Buffer , uint BufferSize , [Out()] out uint pBytesRead); } I am sending the data from the MSTSC COM object and ActiveX controll. public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { rdp.Server = "schamberlainvm"; rdp.UserName = "TestAcct"; IMsTscNonScriptable secured = (IMsTscNonScriptable)rdp.GetOcx(); secured.ClearTextPassword = "asdf"; rdp.CreateVirtualChannels("TSCRED"); rdp.Connect(); } private void button1_Click(object sender, EventArgs e) { rdp.SendOnVirtualChannel("TSCRED", "Hello World!"); } } //Designer code // // rdp // this.rdp.Enabled = true; this.rdp.Location = new System.Drawing.Point(12, 12); this.rdp.Name = "rdp"; this.rdp.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("rdp.OcxState"))); this.rdp.Size = new System.Drawing.Size(1092, 580); this.rdp.TabIndex = 0; I am getting a execption every time NativeMethods.WTSVirtualChannelRead runs Any help on this would be greatly appreciated. EDIT -- mHandle has a non-zero value when the function runs. updated code to add that check. EDIT2 -- I used the P/Invoke Interop Assistant and generated a new sigiture [DllImport("Wtsapi32.dll", EntryPoint = "WTSVirtualChannelRead")] [return: MarshalAs(UnmanagedType.Bool)] public static extern bool WTSVirtualChannelRead( [In()] System.IntPtr hChannelHandle , uint TimeOut , [Out()] [MarshalAs(UnmanagedType.LPStr)] StringBuilder Buffer , uint BufferSize , [Out()] out uint pBytesRead); it now receives the text string (Yea!) but it only gets the first letter of my test string(Boo!). Any ideas on what is going wrong? EDIT 3 --- After the call that should of read the hello world; BytesRead = 24 Buffer.Length = 1; Buffer.Capacity = 16; Buffer.m_StringValue = "H";

  Read the article

• How to set focus for CustCombBox in a CellEditingTemplate when entering page at the first time(MVVM

  - by Shamin

  PreparingCellForEdit="dg_PreparingCellForEdit" BeginningEdit="dg_BeginningEdit" <data:DataGridTemplateColumn MinWidth="300"> <data:DataGridTemplateColumn.HeaderStyle> <Style TargetType="primitives:DataGridColumnHeader" BasedOn="{StaticResource FOTDataGridColumnHeaderStyle}"> <Setter Property="ContentTemplate"> <Setter.Value> <DataTemplate> <TextBlock Text="{Binding CancelReasonText2,Source={StaticResource LabelResource}}" Style="{StaticResource TextBlockLabelStandardStyle}"/> </DataTemplate> </Setter.Value> </Setter> </Style> </data:DataGridTemplateColumn.HeaderStyle> <data:DataGridTemplateColumn.CellTemplate> <DataTemplate> <TextBlock Text="{Binding CancelReason.CancelCodeDescription}" Style="{StaticResource TextBlockLabelStandardStyle}"/> </DataTemplate> </data:DataGridTemplateColumn.CellTemplate> <data:DataGridTemplateColumn.CellEditingTemplate> <DataTemplate> <input:AutoCompleteBox x:Name="cBoxCancelReason" FilterMode="StartsWith" IsDropDownOpen="True" SelectedItem="{Binding CancelReason, Mode=TwoWay}" ItemsSource="{Binding CancelCodes}" ValueMemberPath="CancelCodeDescription" > <input:AutoCompleteBox.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding CancelCodeDescription}" Style="{StaticResource TextBlockLabelStandardStyle}"/> </DataTemplate> </input:AutoCompleteBox.ItemTemplate> </input:AutoCompleteBox> </DataTemplate> </data:DataGridTemplateColumn.CellEditingTemplate> </data:DataGridTemplateColumn> </data:DataGrid.Columns> </data:DataGrid> ---CodeBind public partial class CancelFlightView : UserControl,ICancelFlightView { private data.CancelCode DefaultCancelCode { get { data.CancelCode code = new data.CancelCode(); code.CancelCd = "-1"; code.CancelCodeDescription = "-- Select Cancel Reason --"; return code; } } public CancelFlightView() { InitializeComponent(); this.dg.LoadingRow += new EventHandler<DataGridRowEventArgs>(dg_LoadingRow); //this.Loaded += new RoutedEventHandler(CancelFlightView_Loaded); } void dg_LoadingRow(object sender, DataGridRowEventArgs e) { CheckBox checkBox = (CheckBox)dg.Columns[0].GetCellContent(e.Row); if (checkBox.IsChecked.Value) { FrameworkElement obj = (FrameworkElement)dg.Columns[1].GetCellContent(e.Row); System.Windows.Browser.HtmlPage.Plugin.Focus(); DataGridCell cellEdit = (DataGridCell)obj.Parent; cellEdit.Focus(); dg.BeginEdit(); } } //private void UserControl_Loaded(object sender, RoutedEventArgs e) //{ // if (DataContext != null) // { // CancelFlightViewModel viewModel = (CancelFlightViewModel)DataContext; // viewModel.View = this; // viewModel.Grid = dg; // //viewModel.InitFocus(); // } //} //void CancelFlightView_Loaded(object sender, RoutedEventArgs e) //{ // if (dg.SelectedItem != null) // { // CheckBox checkBox = (CheckBox)dg.Columns[0].GetCellContent(dg.SelectedItem); // if (checkBox.IsChecked.Value) // { // DataGridCell cellEdit = ((DataGridCell)((System.Windows.Controls.Primitives.DataGridCellsPresenter)((DataGridCell)checkBox.Parent).Parent).Children[1]); // dg.CurrentColumn = dg.Columns[1]; // System.Windows.Browser.HtmlPage.Plugin.Focus(); // cellEdit.Focus(); // dg.BeginEdit(); // } // } //} public CancelFlightView(CancelFlightViewModel viewModel):this() { ViewModel = viewModel; } private void dg_PreparingCellForEdit(object sender, DataGridPreparingCellForEditEventArgs e) { object obj = dg.Columns[1].GetCellContent(e.Row); if (obj != null && obj.GetType() == typeof(AutoCompleteBox)) { AutoCompleteBox cBoxCancelReason = (AutoCompleteBox)obj; System.Windows.Browser.HtmlPage.Plugin.Focus(); cBoxCancelReason.Focus(); } } private void CustomComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e) { } private void dg_BeginningEdit(object sender, DataGridBeginningEditEventArgs e) { } private void chkFlight_Click(object sender, RoutedEventArgs e) { CheckBox chkTemp = sender as CheckBox; if (!chkTemp.IsChecked.Value) { } else { DataGridCell cellEdit = ((DataGridCell)((System.Windows.Controls.Primitives.DataGridCellsPresenter)((DataGridCell)chkTemp.Parent).Parent).Children[1]); dg.CurrentColumn = dg.Columns[1]; cellEdit.Focus(); dg.BeginEdit(); } } private void LayoutRoot_KeyUp(object sender, KeyEventArgs e) { //if (e.Key == Key.Enter) //{ //} } #region ICancelFlightView Members public CancelFlightViewModel ViewModel { get { return DataContext as CancelFlightViewModel; } set { DataContext = value; } } #endregion } Now, when user click CheckBox, I can set focus on CustCombBox, but I can't set focus on Whose checkBox.IsChecked.Value = true when page is opened for the first time. is it possible on MVVM pattern? Looking forward your reply, thanks very much.

  Read the article

• Any array function or user defined function to pick up only first occurence of value from the array?

  - by OM The Eternity

  If i have an array Array ( [0] => Array ( [0] => 137 [id] => 137 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => 0 [oldvalue] => 0 [5] => 62 [newvalue] => 62 [6] => checked_out [field] => checked_out [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:28 [changedone] => 2010-05-11 17:46:28 ) [1] => Array ( [0] => 138 [id] => 138 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => 0000-00-00 00:00:00 [oldvalue] => 0000-00-00 00:00:00 [5] => 2010-05-11 12:16:28 [newvalue] => 2010-05-11 12:16:28 [6] => checked_out_time [field] => checked_out_time [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:28 [changedone] => 2010-05-11 17:46:28 ) [2] => Array ( [0] => 139 [id] => 139 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => Subhash [oldvalue] => Subhash [5] => Subhashgfhfgh [newvalue] => Subhashgfhfgh [6] => name [field] => name [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:35 [changedone] => 2010-05-11 17:46:35 ) [3] => Array ( [0] => 140 [id] => 140 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => subhash [oldvalue] => subhash [5] => subhashhfhf [newvalue] => subhashhfhf [6] => alias [field] => alias [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:35 [changedone] => 2010-05-11 17:46:35 ) [4] => Array ( [0] => 141 [id] => 141 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => 62 [oldvalue] => 62 [5] => 0 [newvalue] => 0 [6] => checked_out [field] => checked_out [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:35 [changedone] => 2010-05-11 17:46:35 ) [5] => Array ( [0] => 142 [id] => 142 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => 2010-05-11 12:16:28 [oldvalue] => 2010-05-11 12:16:28 [5] => 0000-00-00 00:00:00 [newvalue] => 0000-00-00 00:00:00 [6] => checked_out_time [field] => checked_out_time [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:35 [changedone] => 2010-05-11 17:46:35 ) ) Now here u can see that the index "field" has repeated values i.e. "checked_out" and "checked_out_time" other indexes have single occurrence, now what should I do to select/grab the first occurrence of the repetitive values only?

  Read the article

• Any array function or user defned function to pick up only first occurance of value from the array?

  - by OM The Eternity

  If i have an array Array ( [0] => Array ( [0] => 137 [id] => 137 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => 0 [oldvalue] => 0 [5] => 62 [newvalue] => 62 [6] => checked_out [field] => checked_out [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:28 [changedone] => 2010-05-11 17:46:28 ) [1] => Array ( [0] => 138 [id] => 138 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => 0000-00-00 00:00:00 [oldvalue] => 0000-00-00 00:00:00 [5] => 2010-05-11 12:16:28 [newvalue] => 2010-05-11 12:16:28 [6] => checked_out_time [field] => checked_out_time [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:28 [changedone] => 2010-05-11 17:46:28 ) [2] => Array ( [0] => 139 [id] => 139 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => Subhash [oldvalue] => Subhash [5] => Subhashgfhfgh [newvalue] => Subhashgfhfgh [6] => name [field] => name [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:35 [changedone] => 2010-05-11 17:46:35 ) [3] => Array ( [0] => 140 [id] => 140 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => subhash [oldvalue] => subhash [5] => subhashhfhf [newvalue] => subhashhfhf [6] => alias [field] => alias [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:35 [changedone] => 2010-05-11 17:46:35 ) [4] => Array ( [0] => 141 [id] => 141 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => 62 [oldvalue] => 62 [5] => 0 [newvalue] => 0 [6] => checked_out [field] => checked_out [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:35 [changedone] => 2010-05-11 17:46:35 ) [5] => Array ( [0] => 142 [id] => 142 [1] => 153 [trackid] => 153 [2] => jos_menu [table_name] => jos_menu [3] => UPDATE [operation] => UPDATE [4] => 2010-05-11 12:16:28 [oldvalue] => 2010-05-11 12:16:28 [5] => 0000-00-00 00:00:00 [newvalue] => 0000-00-00 00:00:00 [6] => checked_out_time [field] => checked_out_time [7] => 0 [live] => 0 [8] => 2010-05-11 17:46:35 [changedone] => 2010-05-11 17:46:35 ) ) Now here u can see that the index "field" has repeated values i.e. "checked_out" and "checked_out_time" other indexes have single occurrence, now what should I do to select/grab the first occurrence of the repetitive values only?

  Read the article

• One email user keeps disconnecting from our exchange server

  - by Funky Si

  I have one user who keeps reporting that Outlook keeps disconnecting from our email server. All other users are fine. Our email server is running Exchange 2010 and the client is running Outlook 2003. The disconnection only lasts a moment. I have checked for logs on the client and Exchange server and can not see any reason for the disconnect, On the Client I get EventId 26 telling me Outlook has disconnected and reconnected but no reason why. Can anyone give me some suggestions of things to try and track down where the problem could be? --Update-- I have found the following log file C:\Program Files\Microsoft\Exchange Server\V14\Logging\RPC Client Access which suggests that it is a problem with RPC sessions. Excerpt is below 2013-01-31T15:21:24.015Z,6413,15,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,,0,00:00:00,"BS=Conn:24,HangingConn:0,AD:$null/$null/0%,CAS:$null/$null/2%,AB:$null/$null/0%,RPC:$null/$null/1%,FC:$null/0,Policy:ClientThrottlingPolicy2,Norm[Resources:(Mdb)Mailbox Database 0765959540(Health:-1%,HistLoad:0),(Mdb)Public Folder Database 1945427388(Health:-1%,HistLoad:0),];GC:6/1/0;", 2013-01-31T15:21:24.015Z,6413,16,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,PublicLogoff,0,00:00:00,LogonId: 1, 2013-01-31T15:21:24.015Z,6413,16,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,,,00:00:00,"BS=Conn:24,HangingConn:0,AD:$null/$null/0%,CAS:$null/$null/2%,AB:$null/$null/0%,RPC:$null/$null/1%,FC:$null/0,Policy:ClientThrottlingPolicy2,Norm[Resources:(Mdb)Mailbox Database 0765959540(Health:-1%,HistLoad:0),(Mdb)Public Folder Database 1945427388(Health:-1%,HistLoad:0),];GC:6/1/0;", 2013-01-31T15:21:24.015Z,6417,5,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,OwnerLogoff,0,00:00:00,LogonId: 0, 2013-01-31T15:21:24.015Z,6417,5,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,,0x6BA (rpc::Exception),00:02:54.7668000,Budget Highs [AD = 0][CAS = 3][RPC = 1] Session Throttled Count = 0; SessionDropped,"RpcEndPoint: [ServerUnavailableException] Connection must be re-established - [SessionDeadException] Connection doesn't have any open logons, but has client activity. This may be masking synchronization stalls. Dropping a connection." 2013-01-31T15:21:24.015Z,6420,7,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,DelegateLogoff,0,00:00:00,LogonId: 0, 2013-01-31T15:21:24.031Z,6420,7,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,,,00:00:00.0156000,Budget Highs [AD = 0][CAS = 3][RPC = 1] Session Throttled Count = 0, 2013-01-31T15:21:24.031Z,6420,7,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,Disconnect,0,00:02:54.2364000,, 2013-01-31T15:21:24.031Z,6419,5,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,OwnerLogoff,0,00:00:00,LogonId: 0, 2013-01-31T15:21:24.031Z,6419,5,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,,,00:00:00,Budget Highs [AD = 0][CAS = 3][RPC = 1] Session Throttled Count = 0, 2013-01-31T15:21:24.031Z,6419,5,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,Disconnect,0,00:02:54.4392000,, 2013-01-31T15:21:24.031Z,6416,7,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,DelegateLogoff,0,00:00:00,LogonId: 0, 2013-01-31T15:21:24.031Z,6416,7,/o=EUROSAFEUK/ou=first administrative group/cn=Recipients/cn=andy,,OUTLOOK.EXE,11.0.8303.0,Classic,,,ncacn_ip_tcp,,,,00:00:00,Budget Highs [AD = 0][CAS = 3][RPC = 1] Session Throttled Count = 0, Can anyone help point me in the right direction for a solution?

  Read the article

• Using HTML 5 SessionState to save rendered Page Content

  - by Rick Strahl

  HTML 5 SessionState and LocalStorage are very useful and super easy to use to manage client side state. For building rich client side or SPA style applications it's a vital feature to be able to cache user data as well as HTML content in order to swap pages in and out of the browser's DOM. What might not be so obvious is that you can also use the sessionState and localStorage objects even in classic server rendered HTML applications to provide caching features between pages. These APIs have been around for a long time and are supported by most relatively modern browsers and even all the way back to IE8, so you can use them safely in your Web applications. SessionState and LocalStorage are easy The APIs that make up sessionState and localStorage are very simple. Both object feature the same API interface which  is a simple, string based key value store that has getItem, setItem, removeitem, clear and  key methods. The objects are also pseudo array objects and so can be iterated like an array with  a length property and you have array indexers to set and get values with. Basic usage  for storing and retrieval looks like this (using sessionStorage, but the syntax is the same for localStorage - just switch the objects):// set var lastAccess = new Date().getTime(); if (sessionStorage) sessionStorage.setItem("myapp_time", lastAccess.toString()); // retrieve in another page or on a refresh var time = null; if (sessionStorage) time = sessionStorage.getItem("myapp_time"); if (time) time = new Date(time * 1); else time = new Date(); sessionState stores data that is browser session specific and that has a liftetime of the active browser session or window. Shut down the browser or tab and the storage goes away. localStorage uses the same API interface, but the lifetime of the data is permanently stored in the browsers storage area until deleted via code or by clearing out browser cookies (not the cache). Both sessionStorage and localStorage space is limited. The spec is ambiguous about this - supposedly sessionStorage should allow for unlimited size, but it appears that most WebKit browsers support only 2.5mb for either object. This means you have to be careful what you store especially since other applications might be running on the same domain and also use the storage mechanisms. That said 2.5mb worth of character data is quite a bit and would go a long way. The easiest way to get a feel for how sessionState and localStorage work is to look at a simple example. You can go check out the following example online in Plunker: http://plnkr.co/edit/0ICotzkoPjHaWa70GlRZ?p=preview which looks like this: Plunker is an online HTML/JavaScript editor that lets you write and run Javascript code and similar to JsFiddle, but a bit cleaner to work in IMHO (thanks to John Papa for turning me on to it). The sample has two text boxes with counts that update session/local storage every time you click the related button. The counts are 'cached' in Session and Local storage. The point of these examples is that both counters survive full page reloads, and the LocalStorage counter survives a complete browser shutdown and restart. Go ahead and try it out by clicking the Reload button after updating both counters and then shutting down the browser completely and going back to the same URL (with the same browser). What you should see is that reloads leave both counters intact at the counted values, while a browser restart will leave only the local storage counter intact. The code to deal with the SessionStorage (and LocalStorage not shown here) in the example is isolated into a couple of wrapper methods to simplify the code: function getSessionCount() { var count = 0; if (sessionStorage) { var count = sessionStorage.getItem("ss_count"); count = !count ? 0 : count * 1; } $("#txtSession").val(count); return count; } function setSessionCount(count) { if (sessionStorage) sessionStorage.setItem("ss_count", count.toString()); } These two functions essentially load and store a session counter value. The two key methods used here are: sessionStorage.getItem(key); sessionStorage.setItem(key,stringVal); Note that the value given to setItem and return by getItem has to be a string. If you pass another type you get an error. Don't let that limit you though - you can easily enough store JSON data in a variable so it's quite possible to pass complex objects and store them into a single sessionStorage value:var user = { name: "Rick", id="ricks", level=8 } sessionStorage.setItem("app_user",JSON.stringify(user)); to retrieve it:var user = sessionStorage.getItem("app_user"); if (user) user = JSON.parse(user); Simple! If you're using the Chrome Developer Tools (F12) you can also check out the session and local storage state on the Resource tab:   You can also use this tool to refresh or remove entries from storage. What we just looked at is a purely client side implementation where a couple of counters are stored. For rich client centric AJAX applications sessionStorage and localStorage provide a very nice and simple API to store application state while the application is running. But you can also use these storage mechanisms to manage server centric HTML applications when you combine server rendering with some JavaScript to perform client side data caching. You can both store some state information and data on the client (ie. store a JSON object and carry it forth between server rendered HTML requests) or you can use it for good old HTTP based caching where some rendered HTML is saved and then restored later. Let's look at the latter with a real life example. Why do I need Client-side Page Caching for Server Rendered HTML? I don't know about you, but in a lot of my existing server driven applications I have lists that display a fair amount of data. Typically these lists contain links to then drill down into more specific data either for viewing or editing. You can then click on a link and go off to a detail page that provides more concise content. So far so good. But now you're done with the detail page and need to get back to the list, so you click on a 'bread crumbs trail' or an application level 'back to list' button and… …you end up back at the top of the list - the scroll position, the current selection in some cases even filters conditions - all gone with the wind. You've left behind the state of the list and are starting from scratch in your browsing of the list from the top. Not cool! Sound familiar? This a pretty common scenario with server rendered HTML content where it's so common to display lists to drill into, only to lose state in the process of returning back to the original list. Look at just about any traditional forums application, or even StackOverFlow to see what I mean here. Scroll down a bit to look at a post or entry, drill in then use the bread crumbs or tab to go back… In some cases returning to the top of a list is not a big deal. On StackOverFlow that sort of works because content is turning around so quickly you probably want to actually look at the top posts. Not always though - if you're browsing through a list of search topics you're interested in and drill in there's no way back to that position. Essentially anytime you're actively browsing the items in the list, that's when state becomes important and if it's not handled the user experience can be really disrupting. Content Caching If you're building client centric SPA style applications this is a fairly easy to solve problem - you tend to render the list once and then update the page content to overlay the detail content, only hiding the list temporarily until it's used again later. It's relatively easy to accomplish this simply by hiding content on the page and later making it visible again. But if you use server rendered content, hanging on to all the detail like filters, selections and scroll position is not quite as easy. Or is it??? This is where sessionStorage comes in handy. What if we just save the rendered content of a previous page, and then restore it when we return to this page based on a special flag that tells us to use the cached version? Let's see how we can do this. A real World Use Case Recently my local ISP asked me to help out with updating an ancient classifieds application. They had a very busy, local classifieds app that was originally an ASP classic application. The old app was - wait for it: frames based - and even though I lobbied against it, the decision was made to keep the frames based layout to allow rapid browsing of the hundreds of posts that are made on a daily basis. The primary reason they wanted this was precisely for the ability to quickly browse content item by item. While I personally hate working with Frames, I have to admit that the UI actually works well with the frames layout as long as you're running on a large desktop screen. You can check out the frames based desktop site here: http://classifieds.gorge.net/ However when I rebuilt the app I also added a secondary view that doesn't use frames. The main reason for this of course was for mobile displays which work horribly with frames. So there's a somewhat mobile friendly interface to the interface, which ditches the frames and uses some responsive design tweaking for mobile capable operation: http://classifeds.gorge.net/mobile  (or browse the base url with your browser width under 800px)   Here's what the mobile, non-frames view looks like:   As you can see this means that the list of classifieds posts now is a list and there's a separate page for drilling down into the item. And of course… originally we ran into that usability issue I mentioned earlier where the browse, view detail, go back to the list cycle resulted in lost list state. Originally in mobile mode you scrolled through the list, found an item to look at and drilled in to display the item detail. Then you clicked back to the list and BAM - you've lost your place. Because there are so many items added on a daily basis the full list is never fully loaded, but rather there's a "Load Additional Listings"  entry at the button. Not only did we originally lose our place when coming back to the list, but any 'additionally loaded' items are no longer there because the list was now rendering  as if it was the first page hit. The additional listings, and any filters, the selection of an item all were lost. Major Suckage! Using Client SessionStorage to cache Server Rendered Content To work around this problem I decided to cache the rendered page content from the list in SessionStorage. Anytime the list renders or is updated with Load Additional Listings, the page HTML is cached and stored in Session Storage. Any back links from the detail page or the login or write entry forms then point back to the list page with a back=true query string parameter. If the server side sees this parameter it doesn't render the part of the page that is cached. Instead the client side code retrieves the data from the sessionState cache and simply inserts it into the page. It sounds pretty simple, and the overall the process is really easy, but there are a few gotchas that I'll discuss in a minute. But first let's look at the implementation. Let's start with the server side here because that'll give a quick idea of the doc structure. As I mentioned the server renders data from an ASP.NET MVC view. On the list page when returning to the list page from the display page (or a host of other pages) looks like this: https://classifieds.gorge.net/list?back=True The query string value is a flag, that indicates whether the server should render the HTML. Here's what the top level MVC Razor view for the list page looks like:@model MessageListViewModel @{ ViewBag.Title = "Classified Listing"; bool isBack = !string.IsNullOrEmpty(Request.QueryString["back"]); } <form method="post" action="@Url.Action("list")"> <div id="SizingContainer"> @if (!isBack) { @Html.Partial("List_CommandBar_Partial", Model) <div id="PostItemContainer" class="scrollbox" xstyle="-webkit-overflow-scrolling: touch;"> @Html.Partial("List_Items_Partial", Model) @if (Model.RequireLoadEntry) { <div class="postitem loadpostitems" style="padding: 15px;"> <div id="LoadProgress" class="smallprogressright"></div> <div class="control-progress"> Load additional listings... </div> </div> } </div> } </div> </form> As you can see the query string triggers a conditional block that if set is simply not rendered. The content inside of #SizingContainer basically holds  the entire page's HTML sans the headers and scripts, but including the filter options and menu at the top. In this case this makes good sense - in other situations the fact that the menu or filter options might be dynamically updated might make you only cache the list rather than essentially the entire page. In this particular instance all of the content works and produces the proper result as both the list along with any filter conditions in the form inputs are restored. Ok, let's move on to the client. On the client there are two page level functions that deal with saving and restoring state. Like the counter example I showed earlier, I like to wrap the logic to save and restore values from sessionState into a separate function because they are almost always used in several places.page.saveData = function(id) { if (!sessionStorage) return; var data = { id: id, scroll: $("#PostItemContainer").scrollTop(), html: $("#SizingContainer").html() }; sessionStorage.setItem("list_html",JSON.stringify(data)); }; page.restoreData = function() { if (!sessionStorage) return; var data = sessionStorage.getItem("list_html"); if (!data) return null; return JSON.parse(data); }; The data that is saved is an object which contains an ID which is the selected element when the user clicks and a scroll position. These two values are used to reset the scroll position when the data is used from the cache. Finally the html from the #SizingContainer element is stored, which makes for the bulk of the document's HTML. In this application the HTML captured could be a substantial bit of data. If you recall, I mentioned that the server side code renders a small chunk of data initially and then gets more data if the user reads through the first 50 or so items. The rest of the items retrieved can be rather sizable. Other than the JSON deserialization that's Ok. Since I'm using SessionStorage the storage space has no immediate limits. Next is the core logic to handle saving and restoring the page state. At first though this would seem pretty simple, and in some cases it might be, but as the following code demonstrates there are a few gotchas to watch out for. Here's the relevant code I use to save and restore:$( function() { … var isBack = getUrlEncodedKey("back", location.href); if (isBack) { // remove the back key from URL setUrlEncodedKey("back", "", location.href); var data = page.restoreData(); // restore from sessionState if (!data) { // no data - force redisplay of the server side default list window.location = "list"; return; } $("#SizingContainer").html(data.html); var el = $(".postitem[data-id=" + data.id + "]"); $(".postitem").removeClass("highlight"); el.addClass("highlight"); $("#PostItemContainer").scrollTop(data.scroll); setTimeout(function() { el.removeClass("highlight"); }, 2500); } else if (window.noFrames) page.saveData(null); // save when page loads $("#SizingContainer").on("click", ".postitem", function() { var id = $(this).attr("data-id"); if (!id) return true; if (window.noFrames) page.saveData(id); var contentFrame = window.parent.frames["Content"]; if (contentFrame) contentFrame.location.href = "show/" + id; else window.location.href = "show/" + id; return false; }); … The code starts out by checking for the back query string flag which triggers restoring from the client cache. If cached the cached data structure is read from sessionStorage. It's important here to check if data was returned. If the user had back=true on the querystring but there is no cached data, he likely bookmarked this page or otherwise shut down the browser and came back to this URL. In that case the server didn't render any detail and we have no cached data, so all we can do is redirect to the original default list view using window.location. If we continued the page would render no data - so make sure to always check the cache retrieval result. Always! If there is data the it's loaded and the data.html data is restored back into the document by simply injecting the HTML back into the document's #SizingContainer element:$("#SizingContainer").html(data.html); It's that simple and it's quite quick even with a fully loaded list of additional items and on a phone. The actual HTML data is stored to the cache on every page load initially and then again when the user clicks on an element to navigate to a particular listing. The former ensures that the client cache always has something in it, and the latter updates with additional information for the selected element. For the click handling I use a data-id attribute on the list item (.postitem) in the list and retrieve the id from that. That id is then used to navigate to the actual entry as well as storing that Id value in the saved cached data. The id is used to reset the selection by searching for the data-id value in the restored elements. The overall process of this save/restore process is pretty straight forward and it doesn't require a bunch of code, yet it yields a huge improvement in the usability of the site on mobile devices (or anybody who uses the non-frames view). Some things to watch out for As easy as it conceptually seems to simply store and retrieve cached content, you have to be quite aware what type of content you are caching. The code above is all that's specific to cache/restore cycle and it works, but it took a few tweaks to the rest of the script code and server code to make it all work. There were a few gotchas that weren't immediately obvious. Here are a few things to pay attention to: Event Handling Logic Timing of manipulating DOM events Inline Script Code Bookmarking to the Cache Url when no cache exists Do you have inline script code in your HTML? That script code isn't going to run if you restore from cache and simply assign or it may not run at the time you think it would normally in the DOM rendering cycle. JavaScript Event Hookups The biggest issue I ran into with this approach almost immediately is that originally I had various static event handlers hooked up to various UI elements that are now cached. If you have an event handler like:$("#btnSearch").click( function() {…}); that works fine when the page loads with server rendered HTML, but that code breaks when you now load the HTML from cache. Why? Because the elements you're trying to hook those events to may not actually be there - yet. Luckily there's an easy workaround for this by using deferred events. With jQuery you can use the .on() event handler instead:$("#SelectionContainer").on("click","#btnSearch", function() {…}); which monitors a parent element for the events and checks for the inner selector elements to handle events on. This effectively defers to runtime event binding, so as more items are added to the document bindings still work. For any cached content use deferred events. Timing of manipulating DOM Elements Along the same lines make sure that your DOM manipulation code follows the code that loads the cached content into the page so that you don't manipulate DOM elements that don't exist just yet. Ideally you'll want to check for the condition to restore cached content towards the top of your script code, but that can be tricky if you have components or other logic that might not all run in a straight line. Inline Script Code Here's another small problem I ran into: I use a DateTime Picker widget I built a while back that relies on the jQuery date time picker. I also created a helper function that allows keyboard date navigation into it that uses JavaScript logic. Because MVC's limited 'object model' the only way to embed widget content into the page is through inline script. This code broken when I inserted the cached HTML into the page because the script code was not available when the component actually got injected into the page. As the last bullet - it's a matter of timing. There's no good work around for this - in my case I pulled out the jQuery date picker and relied on native <input type="date" /> logic instead - a better choice these days anyway, especially since this view is meant to be primarily to serve mobile devices which actually support date input through the browser (unlike desktop browsers of which only WebKit seems to support it). Bookmarking Cached Urls When you cache HTML content you have to make a decision whether you cache on the client and also not render that same content on the server. In the Classifieds app I didn't render server side content so if the user comes to the page with back=True and there is no cached content I have to a have a Plan B. Typically this happens when somebody ends up bookmarking the back URL. The easiest and safest solution for this scenario is to ALWAYS check the cache result to make sure it exists and if not have a safe URL to go back to - in this case to the plain uncached list URL which amounts to effectively redirecting. This seems really obvious in hindsight, but it's easy to overlook and not see a problem until much later, when it's not obvious at all why the page is not rendering anything. Don't use <body> to replace Content Since we're practically replacing all the HTML in the page it may seem tempting to simply replace the HTML content of the <body> tag. Don't. The body tag usually contains key things that should stay in the page and be there when it loads. Specifically script tags and elements and possibly other embedded content. It's best to create a top level DOM element specifically as a placeholder container for your cached content and wrap just around the actual content you want to replace. In the app above the #SizingContainer is that container. Other Approaches The approach I've used for this application is kind of specific to the existing server rendered application we're running and so it's just one approach you can take with caching. However for server rendered content caching this is a pattern I've used in a few apps to retrofit some client caching into list displays. In this application I took the path of least resistance to the existing server rendering logic. Here are a few other ways that come to mind: Using Partial HTML Rendering via AJAXInstead of rendering the page initially on the server, the page would load empty and the client would render the UI by retrieving the respective HTML and embedding it into the page from a Partial View. This effectively makes the initial rendering and the cached rendering logic identical and removes the server having to decide whether this request needs to be rendered or not (ie. not checking for a back=true switch). All the logic related to caching is made on the client in this case. Using JSON Data and Client RenderingThe hardcore client option is to do the whole UI SPA style and pull data from the server and then use client rendering or databinding to pull the data down and render using templates or client side databinding with knockout/angular et al. As with the Partial Rendering approach the advantage is that there's no difference in the logic between pulling the data from cache or rendering from scratch other than the initial check for the cache request. Of course if the app is a  full on SPA app, then caching may not be required even - the list could just stay in memory and be hidden and reactivated. I'm sure there are a number of other ways this can be handled as well especially using  AJAX. AJAX rendering might simplify the logic, but it also complicates search engine optimization since there's no content loaded initially. So there are always tradeoffs and it's important to look at all angles before deciding on any sort of caching solution in general. State of the Session SessionState and LocalStorage are easy to use in client code and can be integrated even with server centric applications to provide nice caching features of content and data. In this post I've shown a very specific scenario of storing HTML content for the purpose of remembering list view data and state and making the browsing experience for lists a bit more friendly, especially if there's dynamically loaded content involved. If you haven't played with sessionStorage or localStorage I encourage you to give it a try. There's a lot of cool stuff that you can do with this beyond the specific scenario I've covered here… Resources Overview of localStorage (also applies to sessionStorage) Web Storage Compatibility Modernizr Test Suite© Rick Strahl, West Wind Technologies, 2005-2013Posted in JavaScript  HTML5  ASP.NET  MVC   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

  Read the article

• Verilog errors during synthesis

  - by chester.boo

  Here is the code in question: http://pastebin.com/smqUNpdt When I do a syntax check, everything is okay. But when I try to synthesize with XST I get the following errors: ERROR:Xst:870 - "fibonacci.v" line 42: Can not simplify operator DIV. ERROR:Xst:899 - "fibonacci.v" line 29: The logic for <out> does not match a known FF or Latch template. ERROR:Xst:899 - "fibonacci.v" line 30: The logic for <ratio> does not match a known FF or Latch template. ERROR:Xst:899 - "fibonacci.v" line 36: The logic for <nextstate> does not match a known FF or Latch template. ERROR:Xst:899 - "fibonacci.v" line 37: The logic for <previousstate> does not match a known FF or Latch template. ERROR:Xst:899 - "fibonacci.v" line 38: The logic for <presentstate> does not match a known FF or Latch template. ERROR:Xst:899 - "fibonacci.v" line 39: The logic for <fib_number_cnt> does not match a known FF or Latch template.

  Read the article

• SQL Server CLR stored procedures in data processing tasks - good or evil?

  - by Gart

  In short - is it a good design solution to implement most of the business logic in CLR stored procedures? I have read much about them recently but I can't figure out when they should be used, what are the best practices, are they good enough or not. For example, my business application needs to parse a large fixed-length text file, extract some numbers from each line in the file, according to these numbers apply some complex business rules (involving regex matching, pattern matching against data from many tables in the database and such), and as a result of this calculation update records in the database. There is also a GUI for the user to select the file, view the results, etc. This application seems to be a good candidate to implement the classic 3-tier architecture: the Data Layer, the Logic Layer, and the GUI layer. The Data Layer would access the database The Logic Layer would run as a WCF service and implement the business rules, interacting with the Data Layer The GUI Layer would be a means of communication between the Logic Layer and the User. Now, thinking of this design, I can see that most of the business rules may be implemented in a SQL CLR and stored in SQL Server. I might store all my raw data in the database, run the processing there, and get the results. I see some advantages and disadvantages of this solution: Pros: The business logic runs close to the data, meaning less network traffic. Process all data at once, possibly utilizing parallelizm and optimal execution plan. Cons: Scattering of the business logic: some part is here, some part is there. Questionable design solution, may encounter unknown problems. Difficult to implement a progress indicator for the processing task. I would like to hear all your opinions about SQL CLR. Does anybody use it in production? Are there any problems with such design? Is it a good thing?

  Read the article

• System.InvalidOperationException in Output Window

  - by user318068

  I constantly get the following message in my output/debug windows. The app doesn't crash but I was wondering what the deal with it is: A first chance exception of type 'System.InvalidOperationException' occurred in System.dll my code :sol.cs using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication1 { class Sol { public LinkedList<int> tower1 = new LinkedList<int>(); public LinkedList<int> tower2 = new LinkedList<int>(); public LinkedList<int> tower3 = new LinkedList<int>(); public static LinkedList<string> BFS = new LinkedList<string>(); public static LinkedList<string> DFS = new LinkedList<string>(); public static LinkedList<string> IDS = new LinkedList<string>(); public int depth; public LinkedList<Sol> neighbors; public Sol() { } public Sol(LinkedList<int> tower1, LinkedList<int> tower2, LinkedList<int> tower3) { this.tower1 = tower1; this.tower2 = tower2; this.tower3 = tower3; neighbors = new LinkedList<Sol>(); } public virtual void getneighbors() { Sol temp = this.copy(); Sol neighbor1 = this.copy(); Sol neighbor2 = this.copy(); Sol neighbor3 = this.copy(); Sol neighbor4 = this.copy(); Sol neighbor5 = this.copy(); Sol neighbor6 = this.copy(); if (temp.tower1.Count != 0) { if (neighbor1.tower2.Count != 0) { if (neighbor1.tower1.First.Value < neighbor1.tower2.First.Value) { neighbor1.tower2.AddFirst(neighbor1.tower1.First); neighbor1.tower1.RemoveFirst(); neighbors.AddLast(neighbor1); } } else { neighbor1.tower2.AddFirst(neighbor1.tower1.First); neighbor1.tower1.RemoveFirst(); neighbors.AddLast(neighbor1); } if (neighbor2.tower3.Count != 0) { if (neighbor2.tower1.First.Value < neighbor2.tower3.First.Value) { neighbor2.tower3.AddFirst(neighbor2.tower1.First); neighbor2.tower1.RemoveFirst(); neighbors.AddLast(neighbor2); } } else { neighbor2.tower3.AddFirst(neighbor2.tower1.First); neighbor2.tower1.RemoveFirst(); neighbors.AddLast(neighbor2); } } //------------- if (temp.tower2.Count != 0) { if (neighbor3.tower1.Count != 0) { if (neighbor3.tower2.First.Value < neighbor3.tower1.First.Value) { neighbor3.tower1.AddFirst(neighbor3.tower2.First); neighbor3.tower2.RemoveFirst(); neighbors.AddLast(neighbor3); } } else { neighbor3.tower1.AddFirst(neighbor3.tower2.First); neighbor3.tower2.RemoveFirst(); neighbors.AddLast(neighbor3); } if (neighbor4.tower3.Count != 0) { if (neighbor4.tower2.First.Value < neighbor4.tower3.First.Value) { neighbor4.tower3.AddFirst(neighbor4.tower2.First); neighbor4.tower2.RemoveFirst(); neighbors.AddLast(neighbor4); } } else { neighbor4.tower3.AddFirst(neighbor4.tower2.First); neighbor4.tower2.RemoveFirst(); neighbors.AddLast(neighbor4); } } //------------------------ if (temp.tower3.Count() != 0) { if (neighbor5.tower1.Count() != 0) { if (neighbor5.tower3.ElementAtOrDefault(0) < neighbor5.tower1.ElementAtOrDefault(0)) { neighbor5.tower1.AddFirst(neighbor5.tower3.First); neighbor5.tower3.RemoveFirst(); neighbors.AddLast(neighbor5); } } else { neighbor5.tower1.AddFirst(neighbor5.tower3.First); neighbor5.tower3.RemoveFirst(); neighbors.AddLast(neighbor5); } if (neighbor6.tower2.Count() != 0) { if (neighbor6.tower3.ElementAtOrDefault(0) < neighbor6.tower2.ElementAtOrDefault(0)) { neighbor6.tower2.AddFirst(neighbor6.tower3.First); neighbor6.tower3.RemoveFirst(); neighbors.AddLast(neighbor6); } } else { neighbor6.tower2.AddFirst(neighbor6.tower3.First); neighbor6.tower3.RemoveFirst(); neighbors.AddLast(neighbor6); } } } public override string ToString() { string str; str = "tower1" + tower1.ToString() + " tower2" + tower2.ToString() + " tower3" + tower3.ToString(); return str; } public Sol copy() { Sol So; LinkedList<int> l1 = new LinkedList<int>(); LinkedList<int> l2 = new LinkedList<int>(); LinkedList<int> l3 = new LinkedList<int>(); for (int i = 0; i <= this.tower1.Count() - 1; i++) { l1.AddLast(tower1.ElementAt(i)); } for (int i = 0; i <= this.tower2.Count - 1; i++) { l2.AddLast(tower2.ElementAt(i)); } for (int i = 0; i <= this.tower3.Count - 1; i++) { l3.AddLast(tower3.ElementAt(i)); } So = new Sol(l1, l2, l3); return So; } public bool Equals(Sol sol) { if (this.tower1.Equals(sol.tower1) & this.tower2.Equals(sol.tower2) & this.tower3.Equals(sol.tower3)) return true; return false; } public virtual bool containedin(Stack<Sol> vec) { bool found = false; for (int i = 0; i <= vec.Count - 1; i++) { if (vec.ElementAt(i).tower1.Equals(this.tower1) && vec.ElementAt(i).tower2.Equals(this.tower2) && vec.ElementAt(i).tower3.Equals(this.tower3)) { found = true; break; } } return found; } public virtual bool breadthFirst(Sol start, Sol goal) { Stack<Sol> nextStack = new Stack<Sol>(); Stack<Sol> traversed = new Stack<Sol>(); bool found = false; start.depth = 0; nextStack.Push(start); while (nextStack.Count != 0) { Sol sol = nextStack.Pop(); BFS.AddFirst("poped State:" + sol.ToString() + "level " + sol.depth); traversed.Push(sol); if (sol.Equals(goal)) { found = true; BFS.AddFirst("Goal:" + sol.ToString()); break; } else { sol.getneighbors(); foreach (Sol neighbor in sol.neighbors) { if (!neighbor.containedin(traversed) && !neighbor.containedin(nextStack)) { neighbor.depth = (sol.depth + 1); nextStack.Push(neighbor); } } } } return found; } public virtual bool depthFirst(Sol start, Sol goal) { Stack<Sol> nextStack = new Stack<Sol>(); Stack<Sol> traversed = new Stack<Sol>(); bool found = false; start.depth = 0; nextStack.Push(start); while (nextStack.Count != 0) { //Dequeue next State for comparison //And add it 2 list of traversed States Sol sol = nextStack.Pop(); DFS.AddFirst("poped State:" + sol.ToString() + "level " + sol.depth); traversed.Push(sol); if (sol.Equals(goal)) { found = true; DFS.AddFirst("Goal:" + sol.ToString()); break; } else { sol.getneighbors(); foreach (Sol neighbor in sol.neighbors) { if (!neighbor.containedin(traversed) && !neighbor.containedin(nextStack)) { neighbor.depth = sol.depth + 1; nextStack.Push(neighbor); } } } } return found; } public virtual bool iterativedeepening(Sol start, Sol goal) { bool found = false; for (int level = 0; ; level++) { Stack<Sol> nextStack = new Stack<Sol>(); Stack<Sol> traversed = new Stack<Sol>(); start.depth = 0; nextStack.Push(start); while (nextStack.Count != 0) { Sol sol = nextStack.Pop(); IDS.AddFirst("poped State:" + sol.ToString() + "Level" + sol.depth); traversed.Push(sol); if (sol.Equals(goal)) { found = true; IDS.AddFirst("Goal:" + sol.ToString()); break; } else if (sol.depth < level) { sol.getneighbors(); foreach (Sol neighbor in sol.neighbors) { if (!neighbor.containedin(traversed) && !neighbor.containedin(nextStack)) { neighbor.depth = sol.depth + 1; nextStack.Push(neighbor); } //end if } //end for each } //end else if } // end while if (found == true) break; } // end for return found; } } } Just wondering if I may be doing something wrong somewhere or something.

  Read the article

• How do I change the base class at runtime in C#?

  - by MatthewMartin

  I may be working on mission impossible here, but I seem to be getting close. I want to extend a ASP.NET control, and I want my code to be unit testable. Also, I'd like to be able to fake behaviors of a real Label (namely things like ID generation, etc), which a real Label can't do in an nUnit host. Here a working example that makes assertions on something that depends on a real base class and something that doesn't-- in a more realistic unit test, the test would depend on both --i.e. an ID existing and some custom behavior. Anyhow the code says it better than I can: public class LabelWrapper : Label //Runtime //public class LabelWrapper : FakeLabel //Unit Test time { private readonly LabelLogic logic= new LabelLogic(); public override string Text { get { return logic.ProcessGetText(base.Text); } set { base.Text=logic.ProcessSetText(value); } } } //Ugh, now I have to test FakeLabelWrapper public class FakeLabelWrapper : FakeLabel //Unit Test time { private readonly LabelLogic logic= new LabelLogic(); public override string Text { get { return logic.ProcessGetText(base.Text); } set { base.Text=logic.ProcessSetText(value); } } } [TestFixture] public class UnitTest { [Test] public void Test() { //Wish this was LabelWrapper label = new LabelWrapper(new FakeBase()) LabelWrapper label = new LabelWrapper(); //FakeLabelWrapper label = new FakeLabelWrapper(); label.Text = "ToUpper"; Assert.AreEqual("TOUPPER",label.Text); StringWriter stringWriter = new StringWriter(); HtmlTextWriter writer = new HtmlTextWriter(stringWriter); label.RenderControl(writer); Assert.AreEqual(1,label.ID); Assert.AreEqual("<span>TOUPPER</span>", stringWriter.ToString()); } } public class FakeLabel { virtual public string Text { get; set; } public void RenderControl(TextWriter writer) { writer.Write("<span>" + Text + "</span>"); } } //System Under Test internal class LabelLogic { internal string ProcessGetText(string value) { return value.ToUpper(); } internal string ProcessSetText(string value) { return value.ToUpper(); } }

  Read the article

• How to Inserting message into View that depends on session value. ASP.NET MVC. Best practice

  - by Andrew Florko

  User have to populate multistep questionnaire web-forms and step messages depend on the option chosen by user at the very beginning. Messages are stored in web.config file. I use asp.net mvc project, strong typed views and keep business logic separated from controller in static class. I don't want to make business logic dependency on web.config. Well, I have to insert message into view that depends on session value. There are at least 2 options how to implement this: View model has property that is populated in controller/businessLogic and rendered in view like <%: Model.HelpMessage1 %>. I have to pass web.config values from controller to businessLogic that makes business logic methods signature too complex. I don't want to make configuration source abstract (in order to let business logic read configuration values from its methods directly) also. Create static helper class that is called from view like <%: ViewHelper.HelpMessage1(Model.Option1) %>. But in this case logic what to show seems to be separated into two classes: business logic & viewHelper. What will you suggest? Thank you in advance!

  Read the article

• DDD: Enum like entities

  - by Chris

  Hi all, I have the following DB model: **Person table** ID | Name | StateId ------------------------------ 1 Joe 1 2 Peter 1 3 John 2 **State table** ID | Desc ------------------------------ 1 Working 2 Vacation and domain model would be (simplified): public class Person { public int Id { get; } public string Name { get; set; } public State State { get; set; } } public class State { private int id; public string Name { get; set; } } The state might be used in the domain logic e.g.: if(person.State == State.Working) // some logic So from my understanding, the State acts like a value object which is used for domain logic checks. But it also needs to be present in the DB model to represent a clean ERM. So state might be extended to: public class State { private int id; public string Name { get; set; } public static State New {get {return new State([hardCodedIdHere?], [hardCodeNameHere?]);}} } But using this approach the name of the state would be hardcoded into the domain. Do you know what I mean? Is there a standard approach for such a thing? From my point of view what I am trying to do is using an object (which is persisted from the ERM design perspective) as a sort of value object within my domain. What do you think? Question update: Probably my question wasn't clear enough. What I need to know is, how I would use an entity (like the State example) that is stored in a database within my domain logic. To avoid things like: if(person.State.Id == State.Working.Id) // some logic or if(person.State.Id == WORKING_ID) // some logic

  Read the article

• Coding style in .NET: whether to refactor into new method or not?

  - by Dione

  Hi As you aware, in .NET code-behind style, we already use a lot of function to accommodate those _Click function, _SelectedIndexChanged function etc etc. In our team there are some developer that make a function in the middle of .NET function, for example: public void Button_Click(object sender, EventArgs e) {     some logic here..     some logic there..     DoSomething();     DoSomethingThere();     another logic here..     DoOtherSomething(); } private void DoSomething() { } private void DoSomethingThere() { } private void DoOtherSomething() { } public void DropDown_SelectedIndexChanged() { } public void OtherButton_Click() { } and the function listed above is only used once in that function and not used anywhere else in the page, or called from other part of the solution. They said it make the code more tidier by grouping them and extract them into additional sub-function. I can understand if the sub-function is use over and over again in the code, but if it is only use once, then I think it is not really a good idea to extract them into sub-function, as the code getting bigger and bigger, when you look into the page and trying to understand the logic or to debug by skimming through line by line, it will make you confused by jumping from main function to the sub-function then to main function and to sub-function again. I know this kind of grouping by method is better when you writing old ASP or Cold fusion style, but I am not sure if this kind of style is better for .NET or not. Question is: which is better when you developing .NET, is grouping similar logic into a sub-method better (although they only use once), or just put them together inside main function and add //explanation here on the start of the logic is better? Hope my question is clear enough. Thanks.

  Read the article

< Previous Page | 158 159 160 161 162 163 164 165 166 167 168 169  | Next Page >