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  • How do I prevent a KActor from changing the orientation of its Z-Axis?

    - by Almo
    So I have an object that inherits from KActor that I would like to behave as a dynamic physics object, but I want its Z-Axis to remain upright, but very stiffly. I've tried the bStayUpright that triggers the "Stay Upright Spring". The problem is, it's a spring, and the object in question oscillates into position when I want it to remain oriented properly without wobbling. In the image above, the yellow block has fallen onto the gray box, and it is currently pivoting about the contact point as it tries to right itself. Should I be tweaking the StayUprightMaxTorque and StayUprightTorqueFactor parameters, or should I be using a Constraint of some sort?

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  • Online architecture guide

    - by hunterman
    I am a newbie in gamedev, and I don't know about programmer's problems that can appear during development. So can you advice me some best practice for starting build new online multi-player game backend? I just saw reddraft server, and I think Spring library can also do some of its features. What is big difference? Do I need learn more spring or I have to use servers like reddraft or write these tools myself? I know that I need to learn hard and many - and the question is - what I should to learn now at the beginning? Thanks.

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  • Is there a good reference manual for ruby/rails?

    - by Kevin
    I've found switching from Java to Ruby/Rails to be very difficult. I feel like the rails books and websites that I've seen are program by example, and I have yet to see anything like a complete reference. In the java/spring world there is plenty of examples but also very thorough reference manuals. So even though I can get toy application xyz up and running in an afternoon with rails I'm apprehensive about doing anything of significance. I'm willing to admit that maybe this is because I've done java/spring for a few years and have near zero experience with ruby/rails. Just wondering if anyone else has run into this or if I'm missing something.

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  • Need to test .properties one by one in every possibility?

    - by ??? Shengyuan Lu
    For example, there are some key-value configuration in .properties file. Such like someFeatureEnable=true. It must be bool type value which will be parsed by framework, in my case it's typical Java Spring configuration. Spring will handle the configuration and throw Exception when users set someFeatureEnable=123. My question is: if there many properties in .properties file, Is it worth testing them one by one? It's quite troublesome and low priority. The .properties file is always configured by tech administrator stuff. Limited chances that they will mess up the configuration. Thanks!

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  • Developer career feeling like going back in time every new job [closed]

    - by komediant
    Is there a good category for this question? My background is bachelor in ICT and for a hobby I am programming already since I was around twelve I think. Started with QBasic, Pascal, C, Java et cetera. Currently I am working for about eight/nine years. Half academics/medical and half company world. A few years ago I started with frameworks and I began with Grails (underlying Spring/Hibernate), which was a heavenly job, very productive and no hassle. My previous job I developed in pure Spring/Hibernate Java, which was a bit more writing annotations and XML and no conventions like Grails. But still, I did like Spring/Hibernate a lot and the professional setup with a developmentstreet, versioning, Jenkins/Sonar, log4j and a good IDE like IntellIJ. It felt quite 'clear' and organised, although I knew Grails which felt a bit more productive. But...at my current job almost half the code is pure servlet, hard coded JDBC (connections handled by yourself), scriptlets in all JSP pages, no service layer, no versioning, no Maven, HTML in DAO-layer, JAR-hell, no hot swap deployment locally, every change you have to deploy and hope it works fine on the server. All local development needs ugly scriptlet tags to check which environment it is running. Et cetera. Now and then developers work over in the evening - I don't - and still lots of issues are not solved and new projects are waiting. I hear the developers complaining, but somehow they feel like what they have now is "advanced" or they are in a sort of comfore zone. The lead developer seems open for new things, but half of the times he says he can implement MVC-framework features himself instead of using what is already out there. So in short, I currently feel like I miss all the modern framework techniques and that the company is going so slow forward. I just work here for two months now. What I do now is also code some partially ugly stuff, but it goes in completely into my nature and I feel uncomfortable with it. Coding something takes long(er) than estimated and my manager complains about why it takes so long and I feel ashamed for myself needing so much time. Where I was used to just writing a query I now build up whole try catch methods. My manager knows my complaints and the developers do so too. There will come a meeting to line out plans for 2013 on technology and the issues I and the company are facing. I am not looking for another job yet, it's close to wehre I live and the economy is fragile. Does anyone else have had this kind of career, like feeling going backwards witch technology? And how did you cope with it?

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  • How do I add the j2ee.jar to a Java2WSDL ant script programmatically?

    - by Marcus
    I am using IBM's Rational Application Developer. I have an ant script that contains the Java2WSDL task. When I run it via IBM, it gives compiler errors unless I include the j2ee.jar file in the classpath via the run tool (it does not pick up the jar files in the classpath in the script). However, I need to be able to call this script programmatically, and it is giving me this error: "java.lang.NoClassDefFoundError: org.eclipse.core.runtime.CoreException" I'm not sure which jars need to be added or where? Since a simple echo script runs, I assume that it is the j2ee.jar or another ant jar that needs to be added. I've added it to the project's buildpath, but that doesn't help. (I also have ant.jar, wsanttasks.jar, all the ant jars from the plugin, tools.jar, remoteAnt.jar, and the swt - all which are included in the buildpath when you run the script by itself.) Script: <?xml version="1.0" encoding="UTF-8"?> <project default="build" basedir="."> <path id="lib.path"> <fileset dir="C:\Program Files\IBM\WebSphere\AppServer\lib" includes="*.jar"/> <!-- Adding these does not help. <fileset dir="C:\Program Files\IBM\SDP70Shared\plugins\org.apache.ant_1.6.5\lib" includes="*.jar"/> <fileset dir="C:\Program Files\IBM\SDP70\jdk\lib" includes="*.jar"/> <fileset dir="C:\Program Files\IBM\SDP70\configuration\org.eclipse.osgi\bundles\1139\1\.cp\lib" includes="*.jar"/> <fileset dir="C:\Program Files\IBM\SDP70Shared\plugins" includes="*.jar"/> --> </path> <taskdef name="java2wsdl" classname="com.ibm.websphere.ant.tasks.Java2WSDL"> <classpath refid="lib.path"/> </taskdef> <target name="build"> <echo message="Beginning build"/> <javac srcdir="C:\J2W_Test\Java2Wsdl_Example" destdir="C:\J2W_Test\Java2Wsdl_Example"> <classpath refid="lib.path"/> <include name="WSExample.java"/> </javac> <echo message="Set up javac"/> <echo message="Running java2wsdl"/> <java2wsdl output="C:\J2W_Test\Java2Wsdl_Example\example\META-INF\wsdl\WSExample.wsdl" classpath="C:\J2W_Test\Java2Wsdl_Example" className= "example.WSExample" namespace="http://example" namespaceImpl="http://example" location="http://localhost:9080/example/services/WSExample" style="document" use="literal"> <mapping namespace="http://example" package="example"/> </java2wsdl> <echo message="Complete"/> </target> </project> Code: File buildFile = new File("build.xml"); Project p = new Project(); p.setUserProperty("ant.file", buildFile.getAbsolutePath()); DefaultLogger consoleLogger = new DefaultLogger(); consoleLogger.setErrorPrintStream(System.err); consoleLogger.setOutputPrintStream(System.out); consoleLogger.setMessageOutputLevel(Project.MSG_INFO); p.addBuildListener(consoleLogger); try { p.fireBuildStarted(); p.init(); ProjectHelper helper = ProjectHelper.getProjectHelper(); p.addReference("ant.projectHelper", helper); helper.parse(p, buildFile); p.executeTarget(p.getDefaultTarget()); p.fireBuildFinished(null); } catch (BuildException e) { p.fireBuildFinished(e); } Error: [java2wsdl] java.lang.NoClassDefFoundError: org.eclipse.core.runtime.CoreException [java2wsdl] at java.lang.J9VMInternals.verifyImpl(Native Method) [java2wsdl] at java.lang.J9VMInternals.verify(J9VMInternals.java:68) [java2wsdl] at java.lang.J9VMInternals.initialize(J9VMInternals.java:129) [java2wsdl] at com.ibm.ws.webservices.multiprotocol.discovery.ServiceProviderManager.getDiscoveredServiceProviders(ServiceProviderManager.java:378) [java2wsdl] at com.ibm.ws.webservices.multiprotocol.discovery.ServiceProviderManager.getAllServiceProviders(ServiceProviderManager.java:214) [java2wsdl] at com.ibm.ws.webservices.wsdl.fromJava.Emitter.initPluggableBindings(Emitter.java:2704) [java2wsdl] at com.ibm.ws.webservices.wsdl.fromJava.Emitter.<init>(Emitter.java:389) [java2wsdl] at com.ibm.ws.webservices.tools.ant.Java2WSDL.execute(Java2WSDL.java:122) [java2wsdl] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275) [java2wsdl] at org.apache.tools.ant.Task.perform(Task.java:364) [java2wsdl] at org.apache.tools.ant.Target.execute(Target.java:341) [java2wsdl] at org.apache.tools.ant.Target.performTasks(Target.java:369) [java2wsdl] at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216) [java2wsdl] at org.apache.tools.ant.Project.executeTarget(Project.java:1185) [java2wsdl] at att.ant.RunAnt.main(RunAnt.java:32)

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  • Project structure: where to put business logic

    - by Mister Smith
    First of all, I'm not asking where does business logic belong. This has been asked before and most answers I've read agree in that it belongs in the model: Where to put business logic in MVC design? How much business logic should be allowed to exist in the controller layer? How accurate is "Business logic should be in a service, not in a model"? Why put the business logic in the model? What happens when I have multiple types of storage? However people disagree in the way this logic should be distributed across classes. There seem to exist three major currents of thought: Fat model with business logic inside entity classes. Anemic model and business logic in "Service" classes. It depends. I find all of them problematic. The first option is what most Fowlerites stick to. The problem with a fat model is that sometimes a business logic funtion is not only related to a class, and instead uses a bunch of other classes. If, for example, we are developing a web store, there should be a function that calcs an order's total. We could think of putting this function inside the Order class, but what actually happens is that the logic needs to use different classes, not only data contained in the Order class, but also in the User class, the Session class, and maybe the Tax class, Country class, or Giftcard, Payment, etc. Some of these classes could be composed inside the Order class, but some others not. Sorry if the example is not very good, but I hope you understand what I mean. Putting such a function inside the Order class would break the single responsibility principle, adding unnecesary dependences. The business logic would be scattered across entity classes, making it hard to find. The second option is the one I usually follow, but after many projects I'm still in doubt about how to name the class or classes holding the business logic. In my company we usually develop apps with offline capabilities. The user is able to perform entire transactions offline, so all validation and business rules should be implemented in the client, and then there's usually a background thread that syncs with the server. So we usually have the following classes/packages in every project: Data model (DTOs) Data Access Layer (Persistence) Web Services layer (Usually one class per WS, and one method per WS method). Now for the business logic, what is the standard approach? A single class holding all the logic? Multiple classes? (if so, what criteria is used to distribute the logic across them?). And how should we name them? FooManager? FooService? (I know the last one is common, but in our case it is bad naming because the WS layer usually has classes named FooWebService). The third option is probably the right one, but it is also devoid of any useful info. To sum up: I don't like the first approach, but I accept that I might have been unable to fully understand the Zen of it. So if you advocate for fat models as the only and universal solution you are welcome to post links explaining how to do it the right way. I'd like to know what is the standard design and naming conventions for the second approach in OO languages. Class names and package structure, in particular. It would also be helpful too if you could include links to Open Source projects showing how it is done. Thanks in advance.

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  • Exception using Querytables in Excel Automation

    - by sam
    Hi, I'm using Automation to populate a range in Excel using a querytable.. However, when I try to add a querytable to the qorksheet I get an exception. I checked the connection string and its working fine.. Can some one please help me with this?? public void writeproc1() { try { Worksheet ws = (Worksheet)wb.Worksheets.Add(Missing.Value, Missing.Value, Missing.Value, Missing.Value); Range rng = ws.get_Range("A1", "E14"); QueryTable qt = ws.QueryTables.Add("Data Source=(local)\\SQLEXPRESS;initial catalog=temp;Integrated Security=SSPI;", rng, "Select * From Table_1"); qt.RefreshStyle = XlCellInsertionMode.xlInsertEntireRows; qt.Refresh(false); } catch (Exception ex) { Console.WriteLine(ex.ToString()); Console.ReadKey(); } } Exception Thrown System.Runtime.InteropServices.COMException (0x800A03EC): Exception from HRESULT: 0x800A03EC at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData) at Microsoft.Office.Interop.Excel.QueryTables.Add(Object Connection, Range Destination, Object Sql) at tmp.Program.writeproc1() in ...Projects\tmp\tmp\Program.cs:line 25

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  • Android, sending XML via HTTP POST (SOAP)

    - by Intosia
    Hi, I would like to invoke a webservice via Android. I need to POST some XML to a URL via HTTP. I found this snipped for sending a POST, but i dont know how to include/add the XML data itself. public void postData() { // Create a new HttpClient and Post Header HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http://10.10.4.35:53011/"); try { // Add your data List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2); nameValuePairs.add(new BasicNameValuePair("Content-Type", "application/soap+xml")); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); // Where/how to add the XML data? // Execute HTTP Post Request HttpResponse response = httpclient.execute(httppost); } catch (ClientProtocolException e) { // TODO Auto-generated catch block } catch (IOException e) { // TODO Auto-generated catch block } } This is the complete POST message that i need to imitate: POST /a8103e90-f1e3-11dd-bfdb-8b1fcff1a110 HTTP/1.1 Host: 10.10.4.35:53011 Content-Type: application/soap+xml Content-Length: 602 <?xml version='1.0' encoding='UTF-8' ?> <s12:Envelope xmlns:s12="http://www.w3.org/2003/05/soap-envelope" xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing"> <s12:Header> <wsa:MessageID>urn:uuid:fc061d40-3d63-11df-bfba-62764ccc0e48</wsa:MessageID> <wsa:Action>http://schemas.xmlsoap.org/ws/2004/09/transfer/Get</wsa:Action> <wsa:To>urn:uuid:a8103e90-f1e3-11dd-bfdb-8b1fcff1a110</wsa:To> <wsa:ReplyTo> <wsa:Address>http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous</wsa:Address> </wsa:ReplyTo> </s12:Header> <s12:Body /> </s12:Envelope>

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  • What could be causing a "Cannot access a disposed object" error in WCF?

    - by Nima
    I am using the following code: private WSHttpBinding ws; private EndpointAddress Srv_Login_EndPoint; private ChannelFactory<Srv_Login.Srv_ILogin> Srv_LoginChannelFactory; private Srv_Login.Srv_ILogin LoginService; The Login is my constructor: public Login() { InitializeComponent(); ws = new WSHttpBinding(); Srv_Login_EndPoint = new EndpointAddress("http://localhost:2687/Srv_Login.svc"); Srv_LoginChannelFactory = new ChannelFactory<Srv_Login.Srv_ILogin>(ws, Srv_Login_EndPoint); } And I'm using service this way: private void btnEnter_Click(object sender, EventArgs e) { try { LoginService = Srv_LoginChannelFactory.CreateChannel(); Srv_Login.LoginResult res = new Srv_Login.LoginResult(); res = LoginService.IsAuthenticated(txtUserName.Text.Trim(), txtPassword.Text.Trim()); if (res.Status == true) { int Id = int.Parse(res.Result.ToString()); } else { lblMessage.Text = "Not Enter"; } } catch (Exception ex) { MessageBox.Show(ex.Message); } finally { Srv_LoginChannelFactory.Close(); } } When the user enters a valid username and password, everything is fine. When the user enters a wrong username and password, the first try correctly displays a "Not Enter" message, but on the second try, the user sees this message: {System.ObjectDisposedException: Cannot access a disposed object. Object name: 'System.ServiceModel.ChannelFactory`1[Test_Poosesh.Srv_Login.Srv_ILogin]'. at System.ServiceModel.Channels.CommunicationObject.ThrowIfDisposed() at System.ServiceModel.ChannelFactory.EnsureOpened() at System.ServiceModel.ChannelFactory`1.CreateChannel(EndpointAddress address, Uri via) at System.ServiceModel.ChannelFactory`1.CreateChannel() How can I fix my code to prevent this error from occurring?

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  • Cannot enlist Synchronization. LocalTransactionCoordinator is completing or completed issue with hib

    - by Bijendra Singh
    I am getting Cannot enlist Synchronization. LocalTransactionCoordinator is completing or completed exception when integrating my method is called from the portlet. I am using spring transaction management for handling all the hibernate transaction in the spring configuration file through AOP. When I run my hibernate dao method for persisting the data through Junit its working fine. Exception description: I am facing an issue that is when I run my code through unit test case data is getting updated in database properly but when I run the same code with integration with portlet my code is executing finely but after the completion of transaction the records is not getting updated to database. The following error can be seen in the log which is [4/7/10 23:06:38:685 MDT] 0000006c LocalTranCoor E WLTC0014E: Cannot enlist Synchronization. LocalTransactionContainment is completing or completed. [4/7/10 23:06:38:689 MDT] 0000006c LocalTransact E J2CA0026E: Method addSync caught java.lang.IllegalStateException: Cannot enlist Synchronization. LocalTransactionCoordinator is completing or completed. at com.ibm.ws.LocalTransaction.LocalTranCoordImpl.enlistSynchronization(LocalTranCoordImpl.java(Compiled Code)) at com.ibm.ejs.j2c.LocalTransactionWrapper.addSync(LocalTransactionWrapper.java(Compiled Code)) at com.ibm.ejs.j2c.ConnectionManager.initializeForUOW(ConnectionManager.java(Compiled Code)) at com.ibm.ejs.j2c.ConnectionManager.involveMCInTran(ConnectionManager.java(Compiled Code)) at com.ibm.ejs.j2c.ConnectionManager.associateConnection(ConnectionManager.java(Compiled Code)) at com.ibm.ejs.j2c.ConnectionManager.associateConnection(ConnectionManager.java(Compiled Code)) at com.ibm.ws.rsadapter.jdbc.WSJdbcConnection.reactivate(WSJdbcConnection.java(Compiled Code)) at com.ibm.ws.rsadapter.jdbc.WSJdbcConnection.getWarnings(WSJdbcConnection.java:1539)

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  • Unknown Exception on trying to initialize the web service stub created by Axis C++

    - by Harsha Reddy
    Hi, I am trying out the sample calculator program given in the folder of axis c++. I am mainly interested in the client side. So I used the wsdl to create the stubs and my main is pretty much the same as given in the sample. However on executing the call Calculator ws (endpoint) I get an unknown exception "First-chance exception at 0x7c0024b9 in CalculatorClient.exe: 0xC0000005: Access violation reading location 0x00000000. First-chance exception at 0x7c812afb in CalculatorClient.exe: Microsoft C++ exception: [rethrow] at memory location 0x00000000.. Unhandled exception at 0x7c0024b9 in CalculatorClient.exe: 0xC0000005: Access violation reading location 0x00000000." and the exception causing code is Calculator::Calculator(const char* pchEndpointUri, AXIS_PROTOCOL_TYPE eProtocol) :Stub(pchEndpointUri, eProtocol) { } I had earlier tried to run a a webservice using Axis C++ but had received the same error. At that time my web service was a java ws on WAS. Then I later tried the calculator client (but this time I did not have any server hosting the ws as I just wanted to check if the Client could initialize). Is the problem caused due to the web service not being hosted on Apache in C++ (though I highly doubt it). Any help would be appreciated. Thanks, Harsha

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  • Change in behaviour & generation of nullreference exception

    - by peril brain
    I made this program 2hr ago and it ran quit well when i confronted this to presaved .xls file. But when i closed that and started new instance,it started generating null refrence exception why??plz explain. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.Threading; using Microsoft.Office.Interop; using Excel = Microsoft.Office.Interop.Excel; namespace svchost { class MainClass { Excel.Application oExcelApp; static void Main(string[] args) { MainClass mc = new MainClass(); while (true) { if (mc.chec()) { Console.WriteLine("RUNNING"); Thread.Sleep(4000); } else { Console.WriteLine("NOT RUNNING"); Thread.Sleep(8000); } } } public bool chec() { try { oExcelApp = (Excel.Application)System.Runtime.InteropServices.Marshal.GetActiveObject("Excel.Application"); Excel.Workbook xlwkbook = (Excel.Workbook)oExcelApp.ActiveWorkbook; //****PROBLEM FROM HERE********* Console.WriteLine(xlwkbook.Name + "\n"); ke kw = new ke(ref oExcelApp,ref xlwkbook); Console.WriteLine(xlwkbook.Author); xlwkbook = null; } catch (Exception ec) { oExcelApp = null; System.GC.Collect(); Console.WriteLine(ec); return false; } oExcelApp = null; System.GC.Collect(); return true; } } class ke { public ke(ref Excel.Application a1, ref Excel.Workbook b1) { Excel.Worksheet ws = (Excel.Worksheet)a1.ActiveSheet; Console.WriteLine(a1.ActiveWorkbook.Name + "\n" + ws.Name); Excel.Range rn; rn = ws.Cells.Find("657/07", Type.Missing, Excel.XlFindLookIn.xlValues, Excel.XlLookAt.xlPart, Excel.XlSearchOrder.xlByRows, Excel.XlSearchDirection.xlNext, false, Type.Missing, Type.Missing); Console.WriteLine(rn.Text); } } }

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  • Hibernate Auto-Increment Setup

    - by dharga
    How do I define an entity for the following table. I've got something that isn't working and I just want to see what I'm supposed to do. USE [BAMPI_TP_dev] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO SET ANSI_PADDING ON GO CREATE TABLE [dbo].[MemberSelectedOptions]( [OptionId] [int] NOT NULL, [SeqNo] [smallint] IDENTITY(1,1) NOT NULL, [OptionStatusCd] [char](1) NULL ) ON [PRIMARY] GO SET ANSI_PADDING OFF This is what I have already that isn't working. @Entity @Table(schema="dbo", name="MemberSelectedOptions") public class MemberSelectedOption extends BampiEntity implements Serializable { @Embeddable public static class MSOPK implements Serializable { private static final long serialVersionUID = 1L; @Column(name="OptionId") int optionId; @GeneratedValue(strategy=GenerationType.IDENTITY) @Column(name="SeqNo", unique=true, nullable=false) BigDecimal seqNo; //Getters and setters here... } private static final long serialVersionUID = 1L; @EmbeddedId MSOPK pk = new MSOPK(); @Column(name="OptionStatusCd") String optionStatusCd; //More Getters and setters here... } I get the following ST. [5/25/10 15:49:40:221 EDT] 0000003d JDBCException E org.slf4j.impl.JCLLoggerAdapter error Cannot insert explicit value for identity column in table 'MemberSelectedOptions' when IDENTITY_INSERT is set to OFF. [5/25/10 15:49:40:221 EDT] 0000003d AbstractFlush E org.slf4j.impl.JCLLoggerAdapter error Could not synchronize database state with session org.hibernate.exception.SQLGrammarException: could not insert: [com.bob.proj.ws.model.MemberSelectedOption] at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:90) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2285) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2678) at org.hibernate.action.EntityInsertAction.execute(EntityInsertAction.java:79) at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:263) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:167) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1028) at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:366) at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137) at com.bcbst.bamp.ws.dao.MemberSelectedOptionDAOImpl.saveMemberSelectedOption(MemberSelectedOptionDAOImpl.java:143) at com.bcbst.bamp.ws.common.AlertReminder.saveMemberSelectedOptions(AlertReminder.java:76) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

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  • To what degree should I use Marshal.ReleaseComObject with Excel Interop objects?

    - by DanM
    I've seen several examples where Marshal.ReleaseComObject() is used with Excel Interop objects (i.e., objects from namespace Microsoft.Office.Interop.Excel), but I've seen it used to various degrees. I'm wondering if I can get away with something like this: var application = new ApplicationClass(); try { // do work with application, workbooks, worksheets, cells, etc. } finally { Marashal.ReleaseComObject(application) } Or if I need to release every single object created, as in this method: public void CreateExcelWorkbookWithSingleSheet() { var application = new ApplicationClass(); var workbook = application.Workbooks.Add(_missing); var worksheets = workbook.Worksheets; for (var worksheetIndex = 1; worksheetIndex < worksheets.Count; worksheetIndex++) { var worksheet = (WorksheetClass)worksheets[worksheetIndex]; worksheet.Delete(); Marshal.ReleaseComObject(worksheet); } workbook.SaveAs( WorkbookPath, _missing, _missing, _missing, _missing, _missing, XlSaveAsAccessMode.xlExclusive, _missing, _missing, _missing, _missing, _missing); workbook.Close(true, _missing, _missing); application.Quit(); Marshal.ReleaseComObject(worksheets); Marshal.ReleaseComObject(workbook); Marshal.ReleaseComObject(application); } What prompted me to ask this question is that, being the LINQ devotee I am, I really want to do something like this: var worksheetNames = worksheets.Cast<Worksheet>().Select(ws => ws.Name); ...but I'm concerned I'll end up with memory leaks or ghost processes if I don't release each worksheet (ws) object. Any insight on this would be appreciated.

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  • Unit testing opaque structure based C API

    - by Nicolas Goy
    I have a library I wrote with API based on opaque structures. Using opaque structures has a lot of benefits and I am very happy with it. Now that my API are stable in term of specifications, I'd like to write a complete battery of unit test to ensure a solid base before releasing it. My concern is simple, how do you unit test API based on opaque structures where the main goal is to hide the internal logic? For example, let's take a very simple object, an array with a very simple test: WSArray a = WSArrayCreate(); int foo = 5; WSArrayAppendValue(a, &foo); int *bar = WSArrayGetValueAtIndex(a, 0); if(&foo != bar) printf("Eroneous value returned\n"); else printf("Good value returned\n"); WSRelease(a); Of course, this tests some facts, like the array actually acts as wanted with 1 value, but when I write unit tests, at least in C, I usualy compare the memory footprint of my datastructures with a known state. In my example, I don't know if some internal state of the array is broken. How would you handle that? I'd really like to avoid adding codes in the implementation files only for unit testings, I really emphasis loose coupling of modules, and injecting unit tests into the implementation would seem rather invasive to me. My first thought was to include the implementation file into my unit test, linking my unit test statically to my library. For example: #include <WS/WS.h> #include <WS/Collection/Array.c> static void TestArray(void) { WSArray a = WSArrayCreate(); /* Structure members are available because we included Array.c */ printf("%d\n", a->count); } Is that a good idea? Of course, the unit tests won't benefit from encapsulation, but they are here to ensure it's actually working.

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  • Third party multipart request in playframework

    - by Brian
    I'm making an application to post photos to yfrog and twitpic and I am having a little trouble figuring out how to set the parameters. Here is my code: public static Result index() { HttpClient httpclient = new DefaultHttpClient(); WSRequestHolder holder = WS.url("http://api.twitpic.com/2/upload.json"); holder.setHeader("Authorization", ""); return async(holder.post("").map(new Function<WS.Response, Result>() { public Result apply(WS.Response response) { return ok(response.getBody()); } })); } Now, I don't expect this to actually get an ok response from the server, as I am just testing the responses that I get back from the server, and that is one that says I need to provide the api key. I figured as much, but I'm not sure of the syntax for providing that parameter, as I need to also give the name of the file and the file. I tried setting holder.post("key=somekey"), with the hope that I would get a different error message (like the key you provided is invalid) but I just get the same error. I'm assuming that I probably need to send it in the for of a multipart request, but I am not very experienced with this kind of request and can't find any play documentation on how to create a multipart request, other than in an html form. Any suggestions and help will be much appreciated. And fyi, I do know that there are yfrog and twitpic java classes to handle this kind of stuff, but I want to do it myself, more so for learning how to do this kind of stuff. Thanks in advance!

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  • Update graph in real time from server

    - by user1869421
    I'm trying to update a graph with received data, so that the height of the bars increase as more data is received from the server via a websocket. But my code doesn't render a graph in the browser and plot the data points. I cannot see anything wrong with the code. I really need some help here please. ws = new WebSocket("ws://localhost:8888/dh"); var useData = [] //var chart; var chart = d3.select("body") .append("svg:svg") .attr("class", "chart") .attr("width", 420) .attr("height", 200); ws.onmessage = function(evt) { var distances = JSON.parse(evt.data); data = distances.miles; console.log(data); if(useData.length <= 10){ useData.push(data) } else { var draw = function(data){ // Set the width relative to max data value var x = d3.scale.linear() .domain([0, d3.max(useData)]) .range([0, 420]); var y = d3.scale.ordinal() .domain(useData) .rangeBands([0, 120]); var rect = chart.selectAll("rect") .data(useData) // enter rect rect.enter().append("svg:rect") .attr("y", y) .attr("width", x) .attr("height", y.rangeBand()); // update rect rect .attr("y", y) .attr("width", x) .attr("height", y.rangeBand()); var text = chart.selectAll("text") .data(useData) // enter text text.enter().append("svg:text") .attr("x", x) .attr("y", function (d) { return y(d) + y.rangeBand() / 2; }) .attr("dx", -3) // padding-right .attr("dy", ".35em") // vertical-align: middle .attr("text-anchor", "end") // text-align: right .text(String); // update text text .data(useData) .attr("x", x) .text(String); } useData.length = 0; } } Thanks

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  • How to have an excel addin read rows from a worksheet until no more data?

    - by user169867
    I've started writing a Com addin for Excel 2003 using C#. I'm looking for a code example showing how to read in cell data from the active worksheet. I've seen that you can write code like this: Excel.Range firstCell = ws.get_Range("A1", Type.Missing); Excel.Range lastCell = ws.get_Range("A10", Type.Missing); Excel.Range worksheetCells = ws.get_Range(firstCell, lastCell); to grab a range of cells. What I could use help with is how to read the cell data when you don't know how many rows of data there are. I may be able to determine the starting row that the data will be begin at, but there will be an unkown number of rows of data to read. Could someone provide me w/ an example of how to read rows from the worksheet until you come across a row of empty cells? Also does anyone know how to grab the range of cells the user has selected? Any help would be greatly appreciated. This seems like a powerful dev tool, but I'm having trouble finding detailed documentation to help me learn it :)

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  • Completed Event not triggering for web service on some systems

    - by Farukh
    Hi, This is rather weird issue that I am facing with by WCF/Silverlight application. I am using a WCF to get data from a database for my Silverlight application and the completed event is not triggering for method in WCF on some systems. I have checked the called method executes properly has returns the values. I have checked via Fiddler and it clearly shows that response has the returned values as well. However the completed event is not getting triggered. Moreover in few of the systems, everything is fine and I am able to process the returned value in the completed method. Any thoughts or suggestions would be greatly appreciated. I have tried searching around the web but without any luck :( Following is the code.. Calling the method.. void RFCDeploy_Loaded(object sender, RoutedEventArgs e) { btnSelectFile.IsEnabled = true; btnUploadFile.IsEnabled = false; btnSelectFile.Click += new RoutedEventHandler(btnSelectFile_Click); btnUploadFile.Click += new RoutedEventHandler(btnUploadFile_Click); RFCChangeDataGrid.KeyDown += new KeyEventHandler(RFCChangeDataGrid_KeyDown); btnAddRFCManually.Click += new RoutedEventHandler(btnAddRFCManually_Click); ServiceReference1.DataService1Client ws = new BEVDashBoard.ServiceReference1.DataService1Client(); ws.GetRFCChangeCompleted += new EventHandler<BEVDashBoard.ServiceReference1.GetRFCChangeCompletedEventArgs>(ws_GetRFCChangeCompleted); ws.GetRFCChangeAsync(); this.BusyIndicator1.IsBusy = true; } Completed Event.... void ws_GetRFCChangeCompleted(object sender, BEVDashBoard.ServiceReference1.GetRFCChangeCompletedEventArgs e) { PagedCollectionView view = new PagedCollectionView(e.Result); view.GroupDescriptions.Add(new PropertyGroupDescription("RFC")); RFCChangeDataGrid.ItemsSource = view; foreach (CollectionViewGroup group in view.Groups) { RFCChangeDataGrid.CollapseRowGroup(group, true); } this.BusyIndicator1.IsBusy = false; } Please note that this WCF has lots of other method as well and all of them are working fine.... I have problem with only this method... Thanks...

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  • HQL : LEFT OUTER JOIN

    - by Parama
    Hi all, I have two tables and respective classes in java.The mapping in the HBM.xml is as follows : The query in the HBM.xml is as follows : from Reports as rep left join rep.parts as parts I am getting the following exception while executing the code : May 19, 2010 10:47:04 AM org.hibernate.util.JDBCExceptionReporter logExceptions WARNING: SQL Error: 904, SQLState: 42000 May 19, 2010 10:47:04 AM org.hibernate.util.JDBCExceptionReporter logExceptions SEVERE: ORA-00904: "REPORTS0_"."PARTNO": invalid identifier org.hibernate.exception.SQLGrammarException: could not execute query at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.loader.Loader.doList(Loader.java:2223) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104) at org.hibernate.loader.Loader.list(Loader.java:2099) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at com.hcl.spring.db.sample.dao.ItemDAOImpl.loadItems(ItemDAOImpl.java:43) at com.hcl.spring.db.sample.service.ItemServiceImpl.loadItems(ItemServiceImpl.java:20) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at $Proxy3.loadItems(Unknown Source) at com.hcl.spring.db.sample.Main.loadItems(Main.java:40) at com.hcl.spring.db.sample.Main.main(Main.java:19) Caused by: java.sql.SQLException: ORA-00904: "REPORTS0_"."PARTNO": invalid identifier at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112) at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331) at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288) at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743) at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:216) at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:799) at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1038) at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:839) at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1133) at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3285) at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3329) at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186) at org.hibernate.loader.Loader.getResultSet(Loader.java:1787) at org.hibernate.loader.Loader.doQuery(Loader.java:674) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236) at org.hibernate.loader.Loader.doList(Loader.java:2220) ... 22 more Do request your help on the same.

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