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  • Hibernate - on the stack or on the heap?

    - by Stephano
    As a Java programmer, you usually keep two truths in your pocket: Instance variables and Objects lie on Heap. Local variables and methods lie on the Stack. Now that I use Hibernate in just about everything, I realize I'm not as sure of myself. Are there some good rules of thumb for using hibernate and knowing where your memory lives?

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  • Datamapper, defining your own object methods, how?

    - by Dublinclontarf
    So lets say I have a class like below class List include DataMapper::Resource property :id, Serial property :username, String def self.my_username return self[:username] end end list=List.create(:username=>,'jim') list.my_username When I run this it tells me that the method cannot be found, and on more investigation that you can only define class methods(not object methods) and that class methods don't have access to objects data. Is there any way to have these methods included as object methods and get access to object data? I'm using Ruby 1.8.6 and the latest version of datamapper.

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  • Good Domain Driven Design samples

    - by jlembke
    I'm learning about DDD and enjoying every minute of it. However, there are some practical issues that are confusing to me that I think seeing some good samples might clear up. So being at peace with those issues, does anyone know of some good working code samples that do a good job of modeling basic DDD concepts? Particularly interested in An illustrative Domain Model Repositories Use of Domain/Application Services Value Objects Aggregate Roots I know I'm probably asking for too much, but anything close will help.

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  • MS SQL Error: Primary file group is full

    - by aximili
    I have a very large table in my database and I am starting to get this error Could not allocate a new page for database 'mydatabase' because of insufficient disk space in filegroup 'PRIMARY'. Create the necessary space by dropping objects in the filegroup, adding additional files to the filegroup, or setting autogrowth on for existing files in the filegroup. How do you fix this error? I don't understand the suggestions there.

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  • Question regarding factory pattern

    - by eriks
    I have a factory class to build objects of base class B. The object (D) that uses this factory received a list of strings representing the actual types. What is the correct implementation: the factory receives an Enum (and uses switch inside the Create function) and D is responsible to convert the string to Enum. the factory receives a string and checks for a match to a set of valid strings (using ifs') other implementation i didn't think of.

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  • Range subtraction in the Excel Object Model

    - by mcoolbeth
    When using Excel Interop libraries from .NET, I can find a Range object representing the cell offset from Range X by calling something like. Range Y = X.Range[2,3]; But what should I do to perform the inverse operation, ie: I have two Range objects, A and B, and I would like to find out by how many rows/columns B is offset from A. Does anyone know the easiest way to do this? Is there a library function? Thanks.

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  • How can I conditionally only log something if it's a certain Class?

    - by BryanWheelock
    Something like this: if self.class == "User": logging.debug("%s non_pks were found" % (str(len(non_pks))) ) In [2]: user = User.objects.get(pk=1) In [3]: user.class Out[3]: In [4]: if user.class == 'django.contrib.auth.models.User': print "yes" ...: In [5]: user.class == 'django.contrib.auth.models.User' Out[5]: False In [6]: user.class == 'User' Out[6]: False In [7]: user.class == "" Out[7]: False

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  • Why static fields are not initialized in time?

    - by Tom Brito
    Somebody tell me: class MyClass { private static MyClass myClass = new MyClass(); private static final Object obj = new Object(); public MyClass() { System.out.println(obj); // will print null once } } I wonder, isn't this a bug? Why static objects are not initialized before the constructor runs?

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  • Implement a 3D paint application: how to start?

    - by NewB
    Hello, I want to implement a paint-like application, which will enable kids to create and work with 3 dimensional objects. How can I start? What is the right approach? WPF, OpenGL, or Direct3D? (I prefer C# solutions, but C++ is OK also). Thank you all in advance! --NewB

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  • How come nobody wrote RadioMenuItems class for Winforms?

    - by Pavel Radzivilovsky
    Or maybe google is just not so friendly to me? What I want is this simple thing: constructor that accepts an array of menu item objects Value get/set property that would set all the Checked properties right bind to all Clicked events of the supplied items and provide One event Working DataBind facilities If you encountered such a nice thing around, please direct me. No need for manual do-it-in-your-form1.cs-class links, please. This I can do myself.

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  • Bind DataGrid to Dictionary in ASP.NET

    - by mcoolbeth
    In ASP.NET, binding a DataGrid to a list of objects is super-easy. I end up with a row for each object in the list, and any cell in a given row is bound to a property of the corresponding object. However, suppose one of the properties of my object is a dictionary, and each is expected to contain a specific key. Is there any way to bind one of my DataGridColumns to that dictionary key? Thanks.

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  • Salesforce consuming XML and display data in Visualforce report

    - by JavaKungFu
    Firstly, this question requires a bit of introduction so please bear with me. The high level is that I am connecting to a outside web service which will return some XML to my apex controller. The idea is that I want to display the XML returned into a nice tabular format in a VisualForce page. The format of the XML coming back will look something like this: <Wrapper><reportTable name='table_id' title='Report Title'> <row> <Element1><![CDATA[campaign_id]]></Element1> <Element2><![CDATA[577373]]></Element2> <Element3><![CDATA[4129]]></Element3> <Element4 dataFormat='2' dataSuffix='%'><![CDATA[0.7151]]></Element4> <Element5><![CDATA[2010-04-04]]></Element5> <Element6><![CDATA[2010-05-03]]></Element6> </row> </reportTable> ... Now currently I am using the XMLdom utility class (developed by SF for XML functions) to map this data into a custom object "reportTable" which contains a list of "row" custom objects. The reason I am building it out this way is because I don't know how many elements will be in each row, nor the number of rows. The Visualforce page looks something like this: <table><apex:repeat value="{!reportTables}" var="table"> <apex:repeat value="{!table.rows}" var="row"> <tr> <apex:repeat value="{!row.ColumnValue}" var="column"> <apex:repeat value="{!column}" var="value"> <td> <apex:outputText value="{!value}" /> </td> </apex:repeat> </apex:repeat> </tr> </apex:repeat> Questions are: 1) Does this seem like a good approach to the problem? 2) Is there a simpler/better way to consume the XML besides writing my own custom objects to map VF to? Open to any and all suggestions. I really hope there is a better way than building the HTML table myself, as then I also have to deal with styling and alignment etc. Thanks.

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  • ETL : Tracking changes to data using Materialized View log

    - by avinash
    I am into designing ETL with source and target database as oracle Standard Edition. For ETL purpose I need to get the changed data everytime.Client does not want any changes to be made in source objects. Is it feasible to create Materialized view log on source database using dblink to track Inser/Update/Delete on the identified tables. Thanks and Regards

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  • Strange error with VS2008 on Windows 7

    - by Christian
    We have a solution with two projects, one of them is a Silverlight 3 application which is embedded on the other ASP.NET MVC project. Just recently an error started to appear which makes the build fail. Here is the output: `------ Build started: Project: DotCoquiMap, Configuration: Debug Any CPU ------ C:\Program Files\MSBuild\Microsoft\Silverlight\v3.0\Microsoft.Ria.Client.targets : warning : Could not find necessary input file 'C:\Users\Michael\Documents\DotCoqui\trunk\DotCoquiMap\Bin\Debug\DotCoquiMap.dll'. Done building project "DotCoquiMap.csproj" -- FAILED. ------ Build started: Project: DotCoquiProject, Configuration: Debug Any CPU ------ C:\Windows\Microsoft.NET\Framework\v3.5\Csc.exe /noconfig /nowarn:1701,1702 /errorreport:prompt /warn:4 /define:DEBUG;TRACE /reference:C:\Users\Michael\Documents\DotCoqui\trunk\DotCoquiMap\Bin\Debug\DotCoquiMap.dll /reference:..\ExternalLibraries\itextsharp.dll /reference:..\ExternalLibraries\MvcMembership.dll /reference:..\ExternalLibraries\PagedList.dll /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Configuration.dll /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Core.dll" /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Data.DataSetExtensions.dll" /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Data.dll /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Data.Linq.dll" /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.dll /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Drawing.dll /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.EnterpriseServices.dll /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Web.Abstractions.dll" /reference:............\Windows\assembly\GAC_MSIL\System.Web.DataVisualization\3.5.0.0__31bf3856ad364e35\System.Web.DataVisualization.dll /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Web.dll /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Web.Extensions.dll" /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Web.Mobile.dll /reference:"C:\Program Files\Microsoft ASP.NET\ASP.NET MVC 1.0\Assemblies\System.Web.Mvc.dll" /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Web.Routing.dll" /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Web.Services.dll /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Xml.dll /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Xml.Linq.dll" /debug+ /debug:full /optimize- /out:obj\Debug\DotCoquiProject.dll /target:library Controllers\AccountController.cs Controllers\AdministrationController.cs Controllers\ApiController.cs Controllers\CampaignsCategoriesController.cs Controllers\CampaignsController.cs Controllers\CampaignsFormViewModel.cs Controllers\CampaignStatisticsController.cs Controllers\CampaignStatisticsDetailsViewModel.cs Controllers\ControllerHelpers.cs Controllers\CountriesController.cs Controllers\ErrorController.cs Controllers\HomeController.cs Controllers\MapController.cs Controllers\MediaController.cs Controllers\MediaViewModel.cs Controllers\NewsController.cs Controllers\OrganizationsController.cs Controllers\OrgCenterController.cs Controllers\UserAdministrationController.cs Default.aspx.cs Global.asax.cs Models\Campaigns.cs Models\CategoriesRuleValidation.cs Models\DotCoquiDBModel.designer.cs Models\DotCoquiRepository.cs Models\DQcodes.cs Models\FileRepository.cs Models\ISmtpClient.cs Models\JsonModels.cs Models\OrgCenter\IndexViewModel.cs Models\SmtpClientProxy.cs Models\Statistic.cs Models\User.cs Models\UserAdministration\DetailsViewModel.cs Models\UserAdministration\IndexViewModel.cs Models\UserAdministration\RoleViewModel.cs Properties\AssemblyInfo.cs error CS0006: Metadata file 'C:\Users\Michael\Documents\DotCoqui\trunk\DotCoquiMap\Bin\Debug\DotCoquiMap.dll' could not be found Compile complete -- 1 errors, 0 warnings ========== Build: 0 succeeded or up-to-date, 2 failed, 0 skipped ==========` And here is the errors / warnings: Warning 2 Could not find necessary input file 'C:\Users\Michael\Documents\DotCoqui\trunk\DotCoquiMap\Bin\Debug\DotCoquiMap.dll'. DotCoquiMap Error 1 Metadata file 'C:\Users\Michael\Documents\DotCoqui\trunk\DotCoquiMap\Bin\Debug\DotCoquiMap.dll' could not be found DotCoquiProject The DotCoquiMap is not getting built therefore the DotCoquiProject (ASP.NET MVC) cannot find the .dll. Now here is the really odd thing, under Windows XP the very same code compiles and runs perfectly.... under windows 7 it gives us these errors. It is the very same code, we have tested it on 3 different Win7 machines to no avail. Help will be really really helpful. Thanks in advance.

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  • copy array from one class to another class array

    - by shishir.bobby
    hi all, i hv an array ("array A", which contains 3 objects, fox ex, to,from,message) in class "A". and in class "B",i m having another array ("array B"),which fills tableview,of class "B" only. i need to fill tableview,with the values of class A's array (i.e array A,with the object values, to,from,message). how can i do it?? how to copy array from another class ? i hope i m clear with my question regards shishir

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  • jax-ws: how to get a handle to start/end of processing incoming soap message

    - by Gerard
    Situation: jax-ws web service on Weblogic appserver; wsdl first development, jaxb customizations in external binding file. I would like to get a handle to the actual jaxb context that will process the incoming soap xml message, before it has been unmarshalled into java objects. Then I would like to get the unmarshaller of this jaxb context - the one that actually will be used during the unmarshalling. And then setup some properties of this unmarshaller (e.g. listener and idresolver).

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  • Cocoa - Timer object that can be started, suspended, resumed?

    - by psychotik
    I'm looking for a repeating timer object that allows me to create it once and then suspend and resume it as needed for the lifetime of my application. I've seen documentation for NSTimer and although I think I can make it do what I want by building an abstraction on top of it that creates/invalidates timer objects multiple times, I was curios if there is a better way using some other system timer implementation. I'm not too familiar with Mac development and couldn't find any other leads besides NSTimer.

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  • accessing values in a Map container, whose values were passed on as a stream

    - by wilson88
    I am trying to get access to the object values of the objects that were sent as a stream from one class to ano ther.Aparently I can view the objects via their keys but am not so sure how to get to the values.ie Bid- values trdId,qty, price. If possible you can demostrate how I can make comparison for the prices in the containers buyers and sellers for the prices. code is as below: void Auctioneer::printTable(map bidtable) { map<int, Bid*>::const_iterator iter; cout << "\t\tBidID | TradID | Type | Qty | Price \n\n"; for(iter=bidtable.begin(); iter != bidtable.end(); iter++)//{ cout << iter->second->toString() << endl<<"\n"; //------------------------------------------------------------------------- // Creating another map for the sellers. cout<<"These are the Sellers bids\n\n"; map<int, Bid*> sellers(bidtable); sellers.erase(10);sellers.erase(11);sellers.erase(12);sellers.erase(13);sellers.erase(14); sellers.erase(15);sellers.erase(16); sellers.erase(17);sellers.erase(18);sellers.erase(19); for(iter=sellers.begin(); iter != sellers.end(); iter++) cout << iter->second->toString() << endl<<"\n"; //-------------------------------------------------------------------------- // Creating another map for the sellers. cout<<"These are the Buyers bids\n\n"; map<int, Bid*> buyers(bidtable); buyers.erase(0);buyers.erase(1);buyers.erase(2);buyers.erase(3);buyers.erase(4);buyers.erase(5); buyers.erase(6);buyers.erase(7); buyers.erase(8);buyers.erase(9); for(iter=buyers.begin(); iter != buyers.end(); iter++) //sellers.erase(10); cout << iter->second->toString() << endl<<"\n";

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  • C++ "if then else" template substitution

    - by duli
    I would like to declare a template as follows: template <typename T> { if objects of class T have method foo(), then const int k=1 else if class has a static const int L then const int k=L else const int k=0; } How can I do this? In general, I would like a mechanism for setting static consts based on properties of T (or typedef defined inside T).

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  • Java object to XML Elements?

    - by DaveKub
    I'm working on a webservices client app and I have it mostly working. I can retrieve and read data from the third-party webservice fine. Now I need to submit some data and I'm stuck. The classes for the objects I'm retrieving/submitting were generated from XSD files via the xjc tool. The part I'm stuck on is turning one of those objects into an XML tree to submit to the webservice. When I retrieve/send a request from/to the ws, it contains a 'payload' object. This is defined in java code as (partial listing): @XmlAccessorType(XmlAccessType.FIELD) @XmlType(name = "PayloadType", propOrder = { "compressed", "document", "any", "format" }) public class PayloadType { @XmlElement(name = "Compressed") protected String compressed; @XmlElement(name = "Document") protected List<String> document; @XmlAnyElement protected List<Element> any; protected String format; public List<Element> getAny() { if (any == null) { any = new ArrayList<Element>(); } return this.any; } } The only field I'm concerned with is the 'any' field which contains an XML tree. When I retrieve data from the ws, I read that field with something like this: ('root' is of org.w3c.dom.Element type and is the result of calling 'getAny().get(0)' on the payload object) NodeList nl = root.getElementsByTagName("ns1:Process"); // "ns1:Process" is an XML node to do something with if (nl != null && nl.getLength() > 0) { for (int i = 0; i < nl.getLength(); i++) { Element proc = (Element) nl.item(i); try { // do something with the 'proc' Element here... } catch (Exception ex) { // handle problems here... } } } Submitting data is where I'm stuck. How do I take a java object created from one of the classes generated from XSD and turn it into an Element object that I can add to the 'any' List of the payload object?? For instance, if I have a DailyData class and I create and populate it with data: DailyData dData = new DailyData(); dData.setID = 34; dData.setValues = "3,5,76,23"; How do I add that 'dData' object to the 'any' List of the payload object? It has to be an Element. Do I do something with a JAXBContext marshaller? I've used that to dump the 'dData' object to the screen to check the XML structure. I'm sure the answer is staring me in the face but I just can't see it! Dave

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  • WCF REST Question, Binding, Configuration

    - by Ethan McGee
    I am working on a WCF rest interface using json. I have wrapped the service in a windows service to host the service but I am now having trouble getting the service to be callable. I am not sure exactly what is wrong. The basic idea is that I want to host the service on a remote server so I want the service mapped to port localhost:7600 so that it can be invoked by posting data to [server_ip]:7600. The problem is most likely in the configuration file, since I am new to WCF and Rest I wasn't really sure what to type for the configuration so sorry if it's a total mess. I removed several chunks of code and comments to make it a little easier to read. These functions should have no bearing on the service since they call only C# functions. WCF Service Code using System; using System.Collections.Generic; using System.Linq; using System.ServiceModel; using System.ServiceModel.Activation; using System.ServiceModel.Web; using System.Text; namespace PCMiler_Connect { public class ZIP_List_Container { public string[] ZIP_List { get; set; } public string Optimized { get; set; } public string Calc_Type { get; set; } public string Cross_International_Borders { get; set; } public string Use_Kilometers { get; set; } public string Hazard_Level { get; set; } public string OK_To_Change_Destination { get; set; } } [ServiceContract] [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall)] public class PCMiler_Webservice { [WebInvoke(Method = "POST", UriTemplate = "", ResponseFormat = WebMessageFormat.Json, RequestFormat = WebMessageFormat.Json), OperationContract] public List<string> Calculate_Distance(ZIP_List_Container container) { return new List<string>(){ distance.ToString(), time.ToString() }; } } } XML Config File <?xml version="1.0" encoding="utf-8"?> <configuration> <system.serviceModel> <services> <service name="PCMiler_Connect.PCMiler_Webservice"> <endpoint address="" behaviorConfiguration="jsonBehavior" binding="webHttpBinding" bindingConfiguration="" contract="PCMiler_Connect.PCMiler_Webservice" /> <host> <baseAddresses> <add baseAddress="http://localhost:7600/" /> </baseAddresses> </host> </service> </services> <behaviors> <endpointBehaviors> <behavior name="jsonBehavior"> <enableWebScript/> </behavior> </endpointBehaviors> </behaviors> </system.serviceModel> </configuration> Service Wrapper using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Diagnostics; using System.Linq; using System.ServiceProcess; using System.ServiceModel; using System.Text; using System.Threading; namespace PCMiler_WIN_Service { public partial class Service1 : ServiceBase { ServiceHost host; public Service1() { InitializeComponent(); } protected override void OnStart(string[] args) { host = new ServiceHost(typeof(PCMiler_Connect.PCMiler_Webservice)); Thread thread = new Thread(new ThreadStart(host.Open)); } protected override void OnStop() { if (host != null) { host.Close(); host = null; } } } }

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