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• [Flex] How to open a menu automatically with a shortcut ?

  - by Sris

  Hi there I have a MenuBar which contains general menu items like File, View, Tools ,Help. I have sub items in each of those menuitems. The problem is that i want to open the 'File' menu automatically when i press Alt+f key. I could capture the keyevents on the view. But how to open the File Menu of the MenuBar (what is the function that needs to be called from MenuBar Class to popup those sub menuitems) ? I have searched for some information on google .. but cudnt find. or else if u have any better solution or example ..plz do post it. <root> <menuitem label="File"> <menuitem label="New" enabled="false"/> <menuitem label="Open.." enabled="false"/> <menuitem label="Save" enabled="false"/> <menuitem label="Restore" enabled="false"/> <menuitem label="Print" enabled="true"/> <menuitem type="seperator" enabled="false"/> <menuitem label="Exit" enabled="true"/> </menuitem> <menuitem label="View" accesskey="v"> <menuitem label="Zoom In" enabled="true" maxValue="200"/> <menuitem label="Zoom Out" enabled="true" maxValue="25"/> </menuitem> <menuitem label="Tools" enabled="false"> <menuitem label="item1" enabled="false"/> <menuitem label="item2" enabled="false"/> </menuitem> </root> Thanks in advance :) Sriss

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• Strategies for Accessing a Application with a COM API From PHP

  - by Alan Storm

  Background: Experienced PHP developer with a mostly *nix background. I'm writing a PHP application that needs to interact with a proprietary 3rd party system. The 3rd party system is Windows only. The PHP application will be living on a separate Linux based system The 3rd party application has been described as having a "COM API" that I'll need to talk to from the PHP application. What does this look like architecturally speaking? I'm starting with the COM section of the PHP manual, but I have specific questions. Specific Questions: Can I talk directly to a COM API from a PHP application running on another server? If so, how? (what PHP extensions would I need, or what protocols/PHP functions would I be using to talk to the API) If the answer to number 2 is no, I'd assume I'd need some kind of application on the Windows machine that can talk to COM, and then a service on the windows machine I can hit with PHP. Are there prebuilt frameworks for this kind of thing? Is this all nonsense and/or did I say something exceedingly stupid? (Quite possible, as I'm a little fuzzy on what "COM" does and doesn't cover) I'm obviously not looking for a full solution here, I'm just trying to get a general idea of what is and isn't possible and what kind of things I'll want to Google for. Thanks!

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• Is a VCS appropriate for usage by a designer?

  - by iconiK

  I know that a VCS is absolutely critical for a developer to increase productivity and protect the code, no doubts about it. But what about a designer, using say, Photoshop (though it's not specific to any tools, just to make my point clearer). VCSs uses delta compression to store different versions of files. This works very well for code, but for images, that's a problem. Raster image files are binary formats, though vector image files are text (SVG comes to my mind) and pose to problem. The problem comes with .psd files (and any other image "source" file) - those can get pretty big and since I'm not familiar with the format, I'll consider them as binary files. How would a VCS work in this condition? The repository could be pretty darned big if the VCS server isn't able to diff the files efficiently (or worse, not at all) and over time this can become a really big pain when someone needs to check out the repository (or clone it if using a DVCS). Have any of you used a VCS for this purpose? How well does it work? I'm mostly interested in Mercurial, though this is a general situation that applies to any VCS.

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• Writing String to Stream and reading it back does not work

  - by Binary255

  I want to write a String to a Stream (a MemoryStream in this case) and read the bytes one by one. stringAsStream = new MemoryStream(); UnicodeEncoding uniEncoding = new UnicodeEncoding(); String message = "Message"; stringAsStream.Write(uniEncoding.GetBytes(message), 0, message.Length); Console.WriteLine("This:\t\t" + (char)uniEncoding.GetBytes(message)[0]); Console.WriteLine("Differs from:\t" + (char)stringAsStream.ReadByte()); The (undesired) result I get is: This: M Differs from: ? It looks like it's not being read correctly, as the first char of "Message" is 'M', which works when getting the bytes from the UnicodeEncoding instance but not when reading them back from the stream. What am I doing wrong? The bigger picture: I have an algorithm which will work on the bytes of a Stream, I'd like to be as general as possible and work with any Stream. I'd like to convert an ASCII-String into a MemoryStream, or maybe use another method to be able to work on the String as a Stream. The algorithm in question will work on the bytes of the Stream.

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• How important is PhD research topic to getting a job?

  - by thornate

  EDIT: This has been closed and I realise that I may not have been specific enough with the original title. I ask two questions here: The general one (Does a PhD help get a job?) which has been asked elsewhere, and the specific one (Is it possible to get work outside of the specific research field?). Assume I've already decided going to do the phd. I'm just stressing about the research topic. Well, I'm one year out of university (Mechatronics engineering and Software Eng double bachelors), worked for a few months then got retrenched (yay economy!). It's looking less and less likely that I'll get a job worth having with the job market as it is, so I'm thinking about going back to uni to do a PhD. I figure that by the time I'm done, the job market will have improved and hopefully I'll have something on my resume that is more attractive than spending three years doing customer support for accounting software. So, my question is to people who've done PhD's. Would you say that they were worth the effort? How important is the research topic to future job-seeking success? The idea I have is a computer-sciencey/neural-networks/data-mining thing which I think is very interesting, but not a field I want to be in forever. My potential supervisor claims that employers don't care so much about the topic of the research but rather the peripheral skills that are developed through a PhD; time managment, self-restraint, planning and whatnot. How does this mesh with people's real world experience? I'd appreciate any advice before signing my life on the line for the next three years. See also: Should developers go to grad school? Best reason not to hire a PhD? How to find an entry-level job after you already have a graduate degree?

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• Sending a byte array from PHP to WCF problem

  - by shin

  Hi I have this problem: I have to send a byte array (encoded photo) from my PHP client to the WCF host. when I do a var_dump() on my array in PHP I get an array[2839] which is ok but on the server side when i debug I see that received array is only byte[5]...any idea how I can fix it? I used code like this $file = file_get_contents($_FILES['Filedata']['tmp_name']); $byteArr = str_split($file); foreach ($byteArr as $key=>$val) { $byteArr[$key] = ord($val); } $client = new SoapClient('http://localhost:8000/MgrService?wsdl', array( 'location' => 'http://localhost:8000/MgrService/SOAP11', 'trace' => true, 'soap_version' => SOAP_1_1 )); $par1->profileId = 13; $par1->photo = $byteArr; $client->TestByte($par1); And as I wrote erlier on the wcf host i get only byte[5] :/ maybe it needs some decoding to right soap serialize? should I use Base64 decoding or sommthing?? General I just want to upload posted file to c# function with byte[] as parameter :/ Help

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• How to correctly set the ORACLE_HOME variable on Ubuntu 9.x?

  - by nowarninglabel

  I have the same problem as listed here: http://stackoverflow.com/questions/52239/oracle-lost-sysdba-password although I did not lose the password, I entered it twice in the configure script originally, and then when I went to login (localhost:8080/apex, password not accepted. I don't have anything in the database, I just want to install and use Oracle-XE. I have tried apt-get removing it twice and reinstalling, but if I try to run /etc/init.d/oracle-xe configure again and I get "Oracle Database 10g Express Edition is already configured" despite the second time removing any folders I could find for Oracle XE. I tried running sqlplus "/ as sysdba" but all I get is: "Error 6 initializing SQL*Plus Message file sp1.msb not found SP2-0750: You may need to set ORACLE_HOME to your Oracle software directory" I tried setting the variable via export. (also tried set). Tried: "export ORACLE_HOME=/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/sqlplus" and all the subdirectories of that. Same error every time. What is the ORACLE_HOME supposed to be set to? The only reference I have seen either just say general or say the above up to the version number then "/db_1". I do no thave a db_1. Let me know if need any clarification. Don't understand what I did wrong in this process.

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• Filtering documents against a dictionary key in MongoDB

  - by Thomas

  I have a collection of articles in MongoDB that has the following structure: { 'category': 'Legislature', 'updated': datetime.datetime(2010, 3, 19, 15, 32, 22, 107000), 'byline': None, 'tags': { 'party': ['Peter Hoekstra', 'Virg Bernero', 'Alma Smith', 'Mike Bouchard', 'Tom George', 'Rick Snyder'], 'geography': ['Michigan', 'United States', 'North America'] }, 'headline': '2 Mich. gubernatorial candidates speak to students', 'text': [ 'BEVERLY HILLS, Mich. (AP) \u2014 Two Democratic and Republican gubernatorial candidates found common ground while speaking to private school students in suburban Detroit', "Democratic House Speaker state Rep. Andy Dillon and Republican U.S. Rep. Pete Hoekstra said Friday a more business-friendly government can help reduce Michigan's nation-leading unemployment rate.", "The candidates were invited to Detroit Country Day Upper School in Beverly Hills to offer ideas for Michigan's future.", 'Besides Dillon, the Democratic field includes Lansing Mayor Virg Bernero and state Rep. Alma Wheeler Smith. Other Republicans running are Oakland County Sheriff Mike Bouchard, Attorney General Mike Cox, state Sen. Tom George and Ann Arbor business leader Rick Snyder.', 'Former Republican U.S. Rep. Joe Schwarz is considering running as an independent.' ], 'dateline': 'BEVERLY HILLS, Mich.', 'published': datetime.datetime(2010, 3, 19, 8, 0, 31), 'keywords': "Governor's Race", '_id': ObjectId('4ba39721e0e16cb25fadbb40'), 'article_id': 'urn:publicid:ap.org:0611e36fb084458aa620c0187999db7e', 'slug': "BC-MI--Governor's Race,2nd Ld-Writethr" } If I wanted to write a query that looked for all articles that had at least 1 geography tag, how would I do that? I have tried writing db.articles.find( {'tags': 'geography'} ), but that doesn't appear to work. I've also thought about changing the search parameter to 'tags.geography', but am having a devil of a time figuring out what the search predicate would be.

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• Cache efficient code

  - by goldenmean

  This could sound a subjective question, but what i am looking for is specific instances which you would have encountered related to this. 1) How to make a code, cache effective-cache friendly? (More cache hits, as less cahce misses as possible). from both perspectives, data cache & program cache(instruction cache). i.e. What all things in one's code, related to data structures, code constructs one should take care of to make it cache effective. 2) Are there any particular data structures one must use, must avoid,or particular way of accessing the memers of that structure etc.. to make code cache effective. 3) Are there any program constructs(if, for, switch, break, goto,...), code-flow(for inside a if, if inside a for, etc...) one should follow/avoid in this matter? I am looking forward to hear individual experiences related to making a cache efficient code in general. It can be any programming language(C,C++,ASsembly,...), any hardware target(ARM,Intel,PowerPC,...), any OS(Windows,Linux,Symbian,...) etc.. More the variety, it will help better to understand it deeply.

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• How to create Fibonacci Sequence in Java

  - by rfkrocktk

  I really suck at math. I mean, I REALLY suck at math. I'm trying to make a simple fibonacci sequence class for an algorithm I'll be using. I have seen the python example which looks something like this: a = 0 b = 1 while b < 10: print b a, b = b, b+a The problem is that I can't really make this work in any other language. I'd like to make it work in Java, since I can pretty much translate it into the other languages I use from there. This is the general thought: public class FibonacciAlgorithm { private Integer a = 0; private Integer b = 1; public FibonacciAlgorithm() { } public Integer increment() { a = b; b = a + b; return value; } public Integer getValue() { return b; } } All that I end up with is doubling, which I could do with multiplication :( Can anyone help me out? Math pwns me.

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• Daylight saving time - do and don'ts

  - by Oded

  I am hoping to make this question and the answers to it the definitive guide to dealing with daylight saving time, in particular for dealing with the actual change overs. Many systems are dependent on keeping accurate time, the problem is with changes to time due to daylight savings - moving the clock forward or backwards. For instance, one has business rules in an order taking system that depend on the time of the order - if the clock changes, the rules might not be as clear. How should the time of the order be persisted? There is of course an endless number of scenarios - this one is simply an illustrative one. How have you dealt with the daylight saving issue? What assumptions are part of your solution? (looking for context here) As important, if not more so: What did you try that did not work? Why did it not work? I would be interested in programming, OS, data persistence and other pertinent aspects of the issue. General answers are great, but I would also like to see details especially if they are only available on one platform.

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• Java NIO (Netty): How does Encryption or GZIPping work in theory (with filters)

  - by Tom

  Hello Experts, i would be very thankfull if you can explain to me, how in theory the "Interceptor/Filter" Pattern in ByteStreams (over Sockets/Channels) work (in Asynchronous IO with netty) in regard to encryption or compression of data. Given I have a Filter that does GZIPPING. How is this internally implemented? Does the Filter "collect" so many bytes form the channel, that this is a usefull number of bytes that can then be en/decoded? What is in general the minimal "blocksize(data to encode/decode in a chunk)" of socket based gzipping? Does this "blocksize" have to be negotiated in advance between server and client? What happens if the client does not send enough data to "fill" the blocksize (due to a network conquestion) but does not close the connection. Does this mean the other side will simply wait until it gets enough bytes to decode or until a timeout occoures...How is the Filter pattern the applied? The compression filter will de/compress the blocksize of bytes and then store them again in the same buffer would (in the case of netty) i normally be using the ChannelHanlderContext to pass the de/encoded data to the next filter?... Any explanations/links/tutorials (for beginners;-) will be very much appreciated to help me understand how for example encryption/compressing are implemented in socket based communication with filters/interceptor pattern. thank you very much tom

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• Specifying ASP.NET MVC attributes for auto-generated data models

  - by Lyubomyr Shaydariv

  Hello to everyone. I'm very new to ASP.NET MVC (as well as ASP.NET in general), and going to gain some knowledge for this technology, so I'm sorry I can ask some trivial questions. I have installed ASP.NET MVC 3 RC1 and I'm trying to do the following. Let's consider that I have a model that's completely auto-generated from a table using the "LINQ to SQL Classes" template in VS2010. The template generates 3 files (two .cs files and one .layout file respectively), and the generated partial class is expected to be used as an MVC model. Let's also consider, a single DB column, that's mapped into the model, may look like this: [global::System.Data.Linq.Mapping.ColumnAttribute(Storage = "_Name", DbType = "VarChar(128)")] public string Name { get { return this._Name; } set { if ( (this._Name != value) ) { // ... generated stuff goes here } } } The ASP.NET MVC engine also provides a beautiful declarative way to specify some additional stuff, like RequiredAttribute, DisplayNameAttribute and other nice attributes. But since the mapped model is a purely auto-genereated model, I've realized that I should not change the model manually, and specify the fields like: [Required] [DisplayName("Project name")] [StringLength(128)] [global::System.Data.Linq.Mapping.ColumnAttribute(Storage = "_Name", DbType = "VarChar(128)")] public string Name { ... though this approach works perfectly... until I change the model in the DBML-designer removing the ASP.NET MVC attributes automatically. So, how do I specify ASP.NET MVC attributes for the DBML models and their fields safely? Thanks in advance, and Merry Christmas.

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• IBasic Accumulator

  - by Tara

  I am trying to do an accumulator in IBasic for a college assignment and I have the general stuff down but I cannot get it to accumulate. The code is below. My question is how do I get it to accumulate and pass to the different module. I'm trying to calculate how many right answers the user gets. Also, i need to calculate the percentage of right answers. so if the user gets 9 out of 10 right theyed answer 90% right. 'October 15, 2009 ' 'Lab 7.5 Programming Challenge 1 - Average Test Scores ' 'This is a dice game ' declare main() declare inputName(name:string) declare getAnswer(num1:int, num2:int) declare getResult(num1:int, num2:int, answer:int) declare avgRight(getRight:int) declare printInfo(name:string, getRight:int, averege:float) openconsole main() do:until inkey$<>"" closeconsole end sub main() def name:string def num1, num2, answer, total, getRight:int def averege:float inputName (name) getRight = 0 For counter = 1 to 10 getRight = getAnswer(num1, num2) getRight = getRight + 1 next counter average = avgRight (getRight) printInfo(Name, getRight, average) end sub inputName (name) Input "Please enter your name: " ,name return sub getAnswer(num1, num2) def answer, getRight:int num1 = rnd (10) + 1 num2 = rnd (10) + 1 Print num1, "+ " ,num2 Input "What is the answer to the equation? " ,answer getRight = getResult(num1, num2, answer) return getRight sub getResult(num1, num2, answer) def getRight:int if answer = num1 + num2 getRight = 1 else getRight = 0 endif return getRight sub avgRight(getRight) def average:float average = getRight / 10 return average sub printInfo(name, getRight, averege) Print "The students name is: " ,name Print "The number right is: " ,getRight Print Using ("&##.#&", "The average right is " ,averege * 100, "%") return

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• Has anyone used Rational Team Concert (RTC)?

  - by FryGuy

  The company I work for is currently evaluating replacements for SourceSafe, and for various reasons, I think RTC will be chosen. I'm a little scared that we're going to end up with a solution that isn't the best for us in our situation. I've tried researching a little bit about what it is, but all I have been able to find are marketing things, but nothing about how it actually works (any of the paradigms it uses, etc). Our team is around 8 developers and 2 QA people on a single project (and 4-5 more people that would be using it for their independent project). It seems like RTC is targetted for larger teams, but our team is relatively small. Does anyone has experience using RTC in a smaller team? The project that would be using it is a .NET/WPF application, so we would be using primarily Visual Studio. Is the Visual Studio integration any good, or are we stuck having to have Eclipse open on top of Visual Studio? Personally, I have been using Bazaar as my personal source control (and checking out/into sourcesafe from a branch), as well as on personal projects. Does RTC incorporate features of "third generation" version control systems, such as first class branching/merging and changesets rather than file changes, and good visualization of where changes come from? Also, what are the general pros and cons for it?

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• Call Multiple Stored Procedures with the Zend Framework

  - by Brian Fisher

  I'm using Zend Framework 1.7.2, MySQL and the MySQLi PDO adapter. I would like to call multiple stored procedures during a given action. I've found that on Windows there is a problem calling multiple stored procedures. If you try it you get the following error message: SQLSTATE[HY000]: General error: 2014 Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute. I found that to work around this issue I could just close the connection to the database after each call to a stored procedure: if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') { //If on windows close the connection $db->closeConnection(); } This has worked well for me, however, now I want to call multiple stored procedures wrapped in a transaction. Of course, closing the connection isn't an option in this situation, since it causes a rollback of the open transaction. Any ideas, how to fix this problem and/or work around the issue. More info about the work around Bug report about the problem

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• How do you pass .net objects values around in F#?

  - by Russell

  I am currently learning F# and functional programming in general (from a C# background) and I have a question about using .net CLR objects during my processing. The best way to describe my problem will be to give an example: let xml = new XmlDocument() |> fun doc -> doc.Load("report.xml"); doc let xsl = new XslCompiledTransform() |> fun doc -> doc.Load("report.xsl"); doc let transformedXml = new MemoryStream() |> fun mem -> xsl.Transform(xml.CreateNavigator(), null, mem); mem This code transforms an XML document with an XSLT document using .net objects. Note XslCompiledTransform.Load works on an object, and returns void. Also the XslCompiledTransform.Transform requires a memorystream object and returns void. The above strategy used is to add the object at the end (the ; mem) to return a value and make functional programming work. When we want to do this one after another we have a function on each line with a return value at the end: let myFunc = new XmlDocument("doc") |> fun a -> a.Load("report.xml"); a |> fun a -> a.AppendChild(new XmlElement("Happy")); a Is there a more correct way (in terms of functional programming) to handle .net objects and objects that were created in a more OO environment? The way I returned the value at the end then had inline functions everywhere feels a bit like a hack and not the correct way to do this. Any help is greatly appreciated!

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• Graph colouring algorithm: typical scheduling problem

  - by newba

  Hi, I'm training code problems like UvA and I have this one in which I have to, given a set of n exams and k students enrolled in the exams, find whether it is possible to schedule all exams in two time slots. Input Several test cases. Each one starts with a line containing 1 < n < 200 of different examinations to be scheduled. The 2nd line has the number of cases k in which there exist at least 1 student enrolled in 2 examinations. Then, k lines will follow, each containing 2 numbers that specify the pair of examinations for each case above. (An input with n = 0 will means end of the input and is not to be processed). Output: You have to decide whether the examination plan is possible or not for 2 time slots. Example: Input: 3 3 0 1 1 2 2 0 9 8 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 Ouput: NOT POSSIBLE. POSSIBLE. I think the general approach is graph colouring, but I'm really a newb and I may confess that I had some trouble understanding the problem. Anyway, I'm trying to do it and then submit it. Could someone please help me doing some code for this problem? I will have to handle and understand this algo now in order to use it later, over and over. I prefer C or C++, but if you want, Java is fine to me ;) Thanks in advance

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• PowerShell: How to find and uninstall a MS Office Update

  - by Hank

  I've been hunting for a clean way to uninstall an MSOffice security update on a large number of workstations. I've found some awkward solutions, but nothing as clean or general like using PowerShell and get-wmiobject with Win32_QuickFixEngineering and the .Uninstall method on the resulting object. [Apparently, Win32_QuickFixEngineering only refers to Windows patches. See: http://social.technet.microsoft.com/Forums/en/winserverpowershell/thread/93cc0731-5a99-4698-b1d4-8476b3140aa3 ] Question 1: Is there no way to use get-wmiobject to find MSOffice updates? There are so many classes and namespaces, I have to wonder. This particualar Office update (KB978382) can be found in the registry here (for Office Ultimate): HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\{91120000-002E-0000-0000-0000000FF1CE}_ULTIMATER_{6DE3DABF-0203-426B-B330-7287D1003E86} which kindly shows the uninstall command of: msiexec /package {91120000-002E-0000-0000-0000000FF1CE} /uninstall {6DE3DABF-0203-426B-B330-7287D1003E86} and the last GUID seems constant between different versions of Office. I've also found the update like this: $wu = new-object -com "Microsoft.Update.Searcher" $wu.QueryHistory(0,$wu.GetTotalHistoryCount()) | where {$_.Title -match "KB978382"} I like this search because it doesn't require any poking around in the registry, but: Question 2: If I've found it like this, what can I do with the found information to facilitate the Uninstall? Thanks

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• WinForms databind to collection property (such as count)

  - by Ornus

  I want to databind to a collection property, such as Count. in general, when I data bind I specify data member for the object property in the collection, not for the actual properties collection itself exposes. for example, I have a list of custom objects. I show them in datagridview. but I also want to show their total count using a separate label. is there a way to do this through databinding? I imagine that somehow I need to force PropertyManager to be used, instead of CurrentyManager? I get the following exception. Notice that DataSource is collection and has TotalValue property. System.ArgumentException: Cannot bind to the property or column TotalValue on the DataSource. Parameter name: dataMember at System.Windows.Forms.BindToObject.CheckBinding() at System.Windows.Forms.Binding.SetListManager(BindingManagerBase bindingManagerBase) at System.Windows.Forms.ListManagerBindingsCollection.AddCore(Binding dataBinding) at System.Windows.Forms.BindingsCollection.Add(Binding binding) at System.Windows.Forms.BindingContext.UpdateBinding(BindingContext newBindingContext, Binding binding) at System.Windows.Forms.Binding.SetBindableComponent(IBindableComponent value) at System.Windows.Forms.ControlBindingsCollection.AddCore(Binding dataBinding) at System.Windows.Forms.BindingsCollection.Add(Binding binding)

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• python / sqlite - database locked despite large timeouts

  - by Chris Phillips

  Hi, I'm sure I'm missing something pretty obvious, but I can't for the life of me stop my pysqlite scripts crashing out with a database is locked error. I have two scripts, one to load data into the database, and one to read data out, but both will frequently, and instantly, crash depending on what the other is doing with the database at any given time. I've got the timeout on both scripts set to 30 seconds: cx = sqlite.connect("database.sql", timeout=30.0) and think I can see some evidence of the timeouts in that i get what appears to be a timing stamp (e.g 0.12343827e-06 0.1 - and how do I stop that being printed?) dumped occasionally in the middle of my curses formatted output screen, but no delay that ever gets remotely near the 30 second timeout, but still one of the other keeps crashing again and again from this. I'm running RHEL5.4 on a 64 bit 4 cpu HS21 IBM blade, and have heard some mention about issues about multi-threading and am not sure if this might be relevant. Packages in use are sqlite-3.3.6-5 and python-sqlite-1.1.7-1.2.1, and upgrading to newer versions outside of RedHat's official provisions is not a great option for me. Possible, but not desirable due to the environment in general. I have had autocommit=1 on previously on both scripts, but have since disabled on both, and am now cx.commit()ing on the inserting script and not committing on the select script. Ultimately as I only ever have one script actually making any modifications, I don't really see why this locking should ever ever happen. I have noticed that this is significantly worse over time when the database has gotten larger. It was recently at 13mb with 3 equal sized tables, which was about 1 day's worth of data. creating a new file has significantly improved this, which seems understandable, but the timeout ultimately just doesn't seem to be being obeyed. Any pointers very much appreciated. Thanks Chris

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• Ternary (and n-ary) relationships in Hibernate

  - by Bytecode Ninja

  Q 1) How can we model a ternary relationship using Hibernate? For example, how can we model the ternary relationship presented here using Hibernate (or JPA)? Ideally I prefer my model to be like this: class SaleAssistant { Long id; //... } class Customer { Long id; //... } class Product { Long id; //... } class Sale { SalesAssistant soldBy; Customer buyer; Product product; //... } Q 1.1) How can we model this variation, in which each Sale item might have many Products? class SaleAssistant { Long id; //... } class Customer { Long id; //... } class Product { Long id; //... } class Sale { SalesAssistant soldBy; Customer buyer; Set<Product> products; //... } Q 2) In general, how can we model n-ary, n = 3 relationships with Hibernate? Thanks in advance.

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• VB.NET invalid cast exception

  - by user127147

  Hi there, I have a simple application to store address details and edit them. I have been away from VB for a few years now and need to refreash my knowledge while working to a tight deadline. I have a general Sub responsible for displaying a form where user can add contact details (by pressing button add) and edit them (by pressing button edit). This sub is stored in a class Contact. The way it is supposed to work is that there is a list with all the contacts and when new contact is added a new entry is displayed. If user wants to edit given entry he or she selects it and presses edit button Public Sub Display() Dim C As New Contact C.Cont = InputBox("Enter a title for this contact.") C.Fname = frmAddCont.txtFName.Text C.Surname = frmAddCont.txtSName.Text C.Address = frmAddCont.txtAddress.Text frmStart.lstContact.Items.Add(C.Cont.ToString) End Sub I call it from the form responsible for adding new contacts by Dim C As New Contact C.Display() and it works just fine. However when I try to do something similar using the edit button I get errors - "Unable to cast object of type 'System.String' to type 'AddressBook.Contact'." Dim C As Contact If lstContact.SelectedItem IsNot Nothing Then C = lstContact.SelectedItem() C.Display() End If I think it may be something simple however I wasn't able to fix it and given short time I have I decided to ask for help here. Thank you

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• MonoRail: Testing, Route Extensions, Folder Structures

  - by Kezzer

  I've got a few questions related to the use of MonoRail Testing Does everyone tend to use NUnit for their testing? I haven't worked enough with testing to know if this is a good testing framework to use. I'm just looking to get more into testing my applications a lot more than before and wanted to know if there's any general guidelines. Are you supposed to copy the controller over to a test area and just rename it with test in the name and re-run it? How do you ensure your test project and main project coincide with one another? Is it just a case of copying everything over again or are there tools available to do it for you? Route Extensions MonoRail tends to use <action>.rails, can you omit the .rails part if you configure your routing correctly? Why does this seem to be the standard? Folder Structures I haven't found anywhere which really points out your standard folder structure. Sure, you have Controllers, Models, and Views. But your Models folder should contain your data access objects as well. I've seen some have something like -> Models -> DaoClasses -> Entities But what about custom structures used to get data out of views? And if you're using NHibernate, where's a good place to stick the mappings? I know it's entirely dependent on the developer, but I haven't really seen any standard approach. Cheers

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• Why is Available Physical Memory (dwAvailPhys) > Available Virtual Memory (dwAvailVirtual) in call G

  - by Andrew

  I am playing with an MSDN sample to do memory stress testing (see: http://msdn.microsoft.com/en-us/magazine/cc163613.aspx) and an extension of that tool that specifically eats physical memory (see http://www.donationcoder.com/Forums/bb/index.php?topic=14895.0;prev_next=next). I am obviously confused though on the differences between Virtual and Physical Memory. I thought each process has 2 GB of virtual memory (although I also read 1.5 GB because of "overhead". My understanding was that some/all/none of this virtual memory could be physical memory, and the amount of physical memory used by a process could change over time (memory could be swapped out to disc, etc.)I further thought that, in general, when you allocate memory, the operating system could use physical memory or virtual memory. From this, I conclude that dwAvailVirtual should always be equal to or greater than dwAvailPhys in the call GlobalMemoryStatus. However, I often (always?) see the opposite. What am I missing. I apologize in advance if my question is not well formed. I'm still trying to get my head around the whole memory management system in Windows. Tutorials/Explanations/Book recs are most welcome! Andrew

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