Search Results

Search found 16333 results on 654 pages for 'exception safe'.

Page 428/654 | < Previous Page | 424 425 426 427 428 429 430 431 432 433 434 435  | Next Page >

  • Open Graph & Rails not retrieving object's URL

    - by Fred
    I'm using Rails to try and add an action for an object both defined for my app on the open graph. I am using an :after_filter in my controller to call the following after session#create: @graph.put_connections('me', 'workkout:complete', :session => url_for([@plan, @session])) I am getting the following back from Facebook: {"error":{"type":"Exception","message":"Could not retrieve data from URL.","code":1660002}} I have checked that the correct URL is passed to put_connections, and when I visit this URL using Facebook's Lint tool, everything is correct. I can't understand why this isn't working, my only thought is that Facebook is hitting the URL moments before rails has generated the object? - not sure if that's even possible though. Can anyone shed any light on this?

    Read the article

  • Could not locate compojure in classpath

    - by Xian
    I am trying the various Getting started examples and I can get a basic hello world example working with basic HTML in the route as such (ns hello-world (:use compojure.core ring.adapter.jetty) (:require [compojure.route :as route])) (defroutes example (GET "/" [] "<h1>Hello World Wide Web!</h1>")) (run-jetty example {:port 8080}) But when I attempt to use the html helpers like so (ns hello-world (:use compojure ring.adapter.jetty) (:require [compojure.route :as route])) (defroutes example (GET "/" (html [:h1 "Hello World"]))) (run-jetty example {:port 8080}) Then I get the following error [null] Exception in thread "main" java.io.FileNotFoundException: Could not locate compojure__init.class or compojure.clj on classpath: (core.clj:1)

    Read the article

  • Why can you reference an imported module using the importing module in python

    - by noam
    I am trying to understand why any import can be referenced using the importing module, e.g #module master.py import slave and then >>>import master >>>print master.slave gives <module 'slave' from 'C:\Documents and Settings....'> What is the purpose of the feature? I can see how it can be helpful in a package's __init__.py file, but nothing else. Is it a side effect of the fact that every import is added to the module's namespace and that the module's namespace is visible from the outside? If so, why didn't they make an exception with data imported from other modules (e.g don't show it as part of the module's namespace for other modules)?

    Read the article

  • Licencing: release the same software with double licence

    - by Luca
    In my free time, I develop (alone, sigh) a project, in particoular an application library. I've released it using GPL v3. At this time, this project has come very useful for a job. I'd like to release my OSS library toghether with the application using the same GPL v3 licence, with the exception that it can be linked for the specific application, or for the specific application vendor. AFAIK, the copyright owner can handle the entire source and licencing it, I did it; and probably the licence owner could cut&paste its own code, change its licence and use for other projects, isn't? But an GPL'ed library cannot be linked with a proprietary software, right? But software could be double-licenced, as MySQL does. So the question is: what should I do to allow the distribution of my GPL'ed library with a proprietary software, being the copyright owner?

    Read the article

  • Out of Memory When Loading Java Entities

    - by Hugh Buchanan
    I have a terrible problem that hopefully has a very simple answer. I am running out of memory when I perform a basic If I have code like this: MyEntity myEntity; for (Object id: someIdList) { myEntity = find(id); // do something basic with myEntity } And the find() method is a standard EntityManager related method: public MyEntity find(Object id) { return em.find(mycorp.ejb.entity.MyEntity.class, id); } This code worked a couple of weeks ago, and works fine if there are fewer items in the database. The resulting error I am facing is: java.lang.OutOfMemoryError: GC overhead limit exceeded The exception is coming from oracle toplink calling some oracle jdbc methods. The loop exists because an EJBQL such as "select object(o) from MyEntity as o" will overload the application server when there are lots of records.

    Read the article

  • Getting the count of rows in a Java resultset

    - by Mr Morgan
    Hello Does anyone know a better way of getting the number of rows in a Java resultset returned from a MySQL database? I'm currently using this: public static int getResultSetRowCount(ResultSet resultSet) { int size = 0; try { resultSet.last(); size = resultSet.getRow(); resultSet.beforeFirst(); } catch(Exception ex) { return 0; } return size; } But am open to alternatives. The resultset returned is not going to be the total number of rows read from the database so I don;t think I can use SQL COUNT. Thanks Mr Morgan.

    Read the article

  • Problems setting up an ASP.NET MVC site on IIS7 w/ Nhibernate

    - by Brandon
    When deploying my published website to the host (Its a shared hosting plan) I get this error: [NullReferenceException: Object reference not set to an instance of an object.] System.Web.PipelineStepManager.ResumeSteps(Exception error) +929 System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb) +91 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +508 I found this question which describes my problem, but I'm not initializing NHibernate in Application_Start, it is already being done in Init. The only other cause of this error I can find is that the Global.asax file is inheriting from a class other than HttpApplication, but I'm not doing that either. This is pretty much the Global.asax file protected void Application_Start() { AreaRegistration.RegisterAllAreas(); RegisterRoutes(RouteTable.Routes); } public override void Init() { base.Init(); if (_wasNHibernateInitialized) return; // Initialize NHibernate // Other setup like the StructureMap initialization } Is there any other reason why an ASP.NET MVC application would give this error when being deployed to IIS7?

    Read the article

  • How to leverage concurrency checking with EF 4.0 POCO Self Tracking Entities in a N-Tier scenario?

    - by Mark Lindell
    I'm using VS1010RC with the POCO self tracking T4 templates. In my WCF update service method I am using something similar to the following: using (var context = new MyContext()) { context.MyObjects.ApplyChanges(myObject); context.SaveChanges(); } This works fine until I set ConcurrencyMode=Fixed on the entity and then I get an exception. It appears as if the context does not know about the previous values as the SQL statement is using the changed entities value in the WHERE clause. What is the correct approach when using ConcurrencyMode=Fixed?

    Read the article

  • DAO, Spring and Hibernate

    - by EugeneP
    Correct me if anything is wrong. Now when we use Spring DAO for ORM templates, when we use @Transactional attribute, we do not have control over the transaction and/or session when the method is called externally, not within the method. Lazy loading saves resources - less queries to the db, less memory to keep all the collections fetched in the app memory. So, if lazy=false, then everything is fetched, all associated collections, that is not effectively, if there are 10,000 records in a linked set. Now, I have a method in a DAO class that is supposed to return me a User object. It has collections that represent linked tables of the database. I need to get a object by id and then query its collections. Hibernate "failed to lazily initialize a collection" exception occurs when I try to access the linked collection that this DAO method returns. Explain please, what is a workaround here?

    Read the article

  • Visual studio asp.net code behind file not showing errors

    - by Mahesh
    Hi, I am developing a web application in which I am suddenly facing an issue. I have a webpage which contains many controls, one of the control is JQuery color picker. Now, I am upgrading my system with telerik controls. As part of this process, I replaced textbox(txtcolor) with radcolorpicker with a different id(colorPicker). Suddenly, my code behind file is not throwing any errors like 'unable to find txtColor'. It is running successfully without build errors. But, when I open the page, system is throwing runtime exception(txtColor not found) which is correct. I tried to change other controls with asp.net controls, still the problem persists. So, I dont think it is anything to do with telerik. Could you please let me know how can fix this issue?? Thanks, Mahesh

    Read the article

  • Server.Transfer("error_404.aspx") in Application_Error returns a blank page

    - by qntmfred
    I look for HttpExceptions in the Application_Error sub of my global.asx Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs) Dim ex As Exception = HttpContext.Current.Server.GetLastError() If ex IsNot Nothing Then If TypeOf (ex) Is HttpUnhandledException Then If ex.InnerException Is Nothing Then Server.Transfer("error.aspx", False) End If ex = ex.InnerException End If If TypeOf (ex) Is HttpException Then Dim httpCode As Integer = CType(ex, HttpException).GetHttpCode() If httpCode = 404 Then Server.ClearError() Server.Transfer("error_404.aspx", False) End If End If End If End Sub I can step through this code and confirm it does hit the Server.Transfer("error_404.aspx"), as well as the Page_Load of error_404.aspx, but all it shows is a blank page.

    Read the article

  • Derived Column Editor

    - by Rob Bowman
    Hi I need to assign a formatted date to a column in a data flow. I have added a Derived Column editor and entered the following expression: "BBD" + SUBSTRING((DT_WSTR,4)DATEADD("Day",30,GETDATE()),1,4) + SUBSTRING((DT_WSTR,2)DATEADD("Day",30,GETDATE()),6,2) + SUBSTRING((DT_WSTR,2)DATEADD("Day",30,GETDATE()),9,2) The problem is that the "Derived Column Transformation Editor" automatically assigns a Data Type of "Unicode string[DT_WSTR]" and a length of "7". Howver, the length of a string is 11, therefore the following exception is thrown each time: [Best Before Date [112]] Error: The "component "Best Before Date" (112)" failed because truncation occurred, and the truncation row disposition on "output column "Comments" (132)" specifies failure on truncation. A truncation error occurred on the specified object of the specified component. Does anyone know why the edit is insisting on a length of 7? I don't seem to be able to change this. Many thanks, Rob.

    Read the article

  • cast across classloader?

    - by IttayD
    How can I do this: class Foo { public static Foo get() throws Exception { ClassLoader cl = new URLClassLoader(new URL[]{"foo.jar"}, null); // Foo.class is in foo.jar return (Foo)cl.loadClass("Foo").newInstance(); // fails on class cast } } What I need is for the JVM to consider the Foo instance from cl as if it is an instance of Foo from the classloader of the executing code. I have seen these approaches, none of them good for me (the above example is a toy example): Load the class (or a separate interface) by a class loader that is a parent of both the calling code and created classloader Serialize and deserialize the object.

    Read the article

  • How to set an array to a list of values in VB.NET?

    - by IPX Ares
    I cannot figure out how to set an array to one of two sets of numbers (there will be more later), every way that I have tried throws some kind of error. I have tried to Dim the array inside the case statements, but then I cannot use the array in the For Each, which makes this worthless.... any ideas would be appreciated. Code: Dim HourArray() As Integer Select Case CurrentShapeRow(ROW_PERIOD) Case "ON", "2X16" HourArray = {6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21} Case "2X8", "5X8" HourArray = {0, 1, 2, 3, 4, 5, 22, 23} Case Else Throw New Exception(String.Format("Unhandled Period: {0}", CurrentShapeRow(ROW_PERIOD))) End Select For Each HourCount As Integer In HourArray() 'DO SOME STUFF HERE Next

    Read the article

  • MVC2: "File not found" after view is painted

    - by Dave Hanna
    This is wierd. First, I'm building a site based on someone else's framework (Piers Lawson: Creating a RESTful Web Service using MVC ), so I'm not entirely sure what's going on under the covers. But when I run it in VS 2010 by pressing F5, it brings up the Home page, and THEN traps an error in Application_Error. The error is "File does not exist" exception. But I have no idea what file it's looking for. Where does flow control go after the View is finished displaying? How can I break to find out what it's looking for?

    Read the article

  • Twisted Python getPage

    - by David Dixon II
    I tried to get support on this but I am TOTALLY confused. Here's my code: from twisted.internet import reactor from twisted.web.client import getPage from twisted.web.error import Error from twisted.internet.defer import DeferredList from sys import argv class GrabPage: def __init__(self, page): self.page = page def start(self, *args): if args == (): # We apparently don't need authentication for this d1 = getPage(self.page) else: if len(args) == 2: # We have our login information d1 = getPage(self.page, headers={"Authorization": " ".join(args)}) else: raise Exception('Missing parameters') d1.addCallback(self.pageCallback) dl = DeferredList([d1]) d1.addErrback(self.errorHandler) dl.addCallback(self.listCallback) def errorHandler(self,result): # Bad thingy! pass def pageCallback(self, result): return result def listCallback(self, result): print result a = GrabPage('http://www.google.com') data = a.start() # Not the HTML I wish to get the HTML out which is given to pageCallback when start() is called. This has been a pita for me. Ty! And sorry for my sucky coding.

    Read the article

  • Problem with SqlServer 2005 when openning connections

    - by Jose Obregon
    I have a Winforms application and I use EntLib to connect to a SQL Server 2005 DB. The application is working ok, but somethings, and lately more often, we have started receiving this error from the db when openning the connection: A connection was successfully established with the server, but then an error occurred during the login process. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.) (Microsoft SQL Server, Error: 233) The problem is intermittent. The user works nice for a couple of hours and then suddenly the exception is thrown. Sometimes it happens when we run a small process that loads a file and then inserts the data to the db. Please if anybody has any thought on this help me

    Read the article

  • Error connecting to exchange mailbox using WebDav

    - by Warda
    We have a windows service that uses the “WebDAV .NET for Exchange” libraries to access the mail server. The WebDav libraries attempts to access the mailbox to process mails. The Error occurs on attempting to retrieve the mailbox contents. The Code snippet below is how the code retrieves the mailbox contents: NetworkCredential credential = new NetworkCredential(Username, Password, Domain); WebdavSession session = new WebdavSession(credential); session.UserMailbox = MailServerURL; Resource resource = new Resource(session); if (UseFormsBasedAuthentication) resource.PerformFormsBasedAuthentication(https://owa.domain.company.org/[email protected]/Inbox"); Mailbox myMailbox = resource.Mailbox; Calling the “resource.Mailbox” raises the following exception: --- System.Net.WebException: The remote server returned an error: (405) Method Not Allowed. at System.Net.HttpWebRequest.GetResponse() at Independentsoft.Webdav.Exchange.Resource.a(String A_0, PropertyName[] A_1) at Independentsoft.Webdav.Exchange.Resource.e(String A_0) at Independentsoft.Webdav.Exchange.Resource.get_Mailbox() at Any helps will be more than appreciated. Thanks

    Read the article

  • BackgroundWorker not working with TeamCity NUnit runner

    - by Catalin DICU
    I'm using NUnit to test View Models in a WPF 3.5 application and I'm using the BackgroundWorker class to execute asynchronous commands.The unit test are running fine with the NUnit runner or ReSharper runner but fail on TeamCity 5.1 server. How is it implemented : I'm using a ViewModel property named IsBusy and set it to false on BackgroundWorker.RunWorkerCompleted event. In my test I'm using this method to wait for the BackgroundWorker to finish : protected void WaitForBackgroundOperation(ViewModel viewModel) { int count = 0; while (viewModel.IsBusy) { RunBackgroundWorker(); if (count++ >= 100) { throw new Exception("Background operation too long"); } Thread.Sleep(100); } } private static void RunBackgroundWorker() { Dispatcher.CurrentDispatcher.Invoke(DispatcherPriority.Background, new ThreadStart(delegate { })); System.Windows.Forms.Application.DoEvents(); } Well, sometimes it works and sometimes it hangs the build. I suppose it's the Application.DoEvents() but I don't know why...

    Read the article

  • MissingMethodException in C# Program

    - by draghia-aurelian
    I wrote a Windows Form Application in C# and it works well for my computer. But on another PC, an error occurs when I try to do some stuff. MenuItem_Click Event Handler private void rUNToolStripMenuItem_Click(object sender, EventArgs e) { MessageBox.Show("I'm in rUNToolStripMenuItem_Click!"); ... } ToolStripMenuItem Event Handler private void dataPositionToolStripMenuItem_Click(object sender, EventArgs e) { MessageBox.Show("I'm in dataPositionToolStripMenuItem_Click!"); ... } Running on my computer: MenuItem_ClickEvent Handler Output (On My PC) MessageBox appears: "I'm in rUNToolStripMenuItem_Click" ToolStripMenuItem Event Handler (On My PC) MessageBox appears: "I'm in dataPositionToolStripMenuItem_Click!" MenuItem_Click Event Handler: (On another PC) Messagebox doesn't appear and an Exception is thrown Method not found: "Void Microsoft.CSharp.RuntimeBinder.CSharpGetMemberBinder.ctor( System.String.System.Type, System.Collections.Generic.IEnumerable'1<Microsoft .CSharp.RuntimeBinder.CSharpArgument Info>)'. This is the PrintScreen with error: What am I doing wrong?

    Read the article

  • sqlite no such table

    - by Graham B
    can anyone please help. I've seen many people with the same problem and looked at all suggestions but still cannot get this to work. I have tried to unistall the application and install again, I have tried to change the version number and start again. I've debugged the code and it does go into the onCreate function, but when I go to make a select query it says the users table does not exist. Any help would greatly be appreciated. Thanks guys DatabaseHandler Class public class DatabaseHandler extends SQLiteOpenHelper { // Variables protected static final int DATABASE_VERSION = 1; protected static final String DATABASE_NAME = "MyUser.db"; // Constructor public DatabaseHandler(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } // Creating Tables @Override public void onCreate(SQLiteDatabase db) { // Create the Users table // NOTE: I have the column variables saved above String CREATE_USERS_TABLE = "CREATE TABLE IF NOT EXISTS Users(" + KEY_PRIMARY_ID + " " + INTEGER + " " + PRIMARY_KEY + " " + AUTO_INCREMENT + " " + NOT_NULL + "," + USERS_KEY_EMAIL + " " + NVARCHAR+"(1000)" + " " + UNIQUE + " " + NOT_NULL + "," + USERS_KEY_PIN + " " + NVARCHAR+"(10)" + " " + NOT_NULL + ")"; db.execSQL(CREATE_USERS_TABLE); } // Upgrading database @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { db.execSQL("DROP TABLE IF EXISTS Users"); onCreate(db); } UserDataSource class public class UserDataSource { private SQLiteDatabase db; private DatabaseHandler dbHandler; public UserDataSource(Context context) { dbHandler = new DatabaseHandler(context); } public void OpenWriteable() throws SQLException { db = dbHandler.getWritableDatabase(); } public void Close() { dbHandler.close(); } // Validate the user login with the username and password provided public void ValidateLogin(String username, String pin) throws CustomException { Cursor cursor = db.rawQuery( "select * from Users where " + DatabaseHandler.USERS_KEY_EMAIL + " = '" + username + "'" + " and " + DatabaseHandler.USERS_KEY_PIN + " = '" + pin + "'" , null); ........ } Then in the activity class, I'm calling UserDataSource uds = new UserDataSource (this); uds.OpenWriteable(); uds.ValidateLogin("name", "pin"); Any help would be great, thanks very much Graham The following is the attached log from the error report 11-23 17:47:46.414: I/SqliteDatabaseCpp(26717): sqlite returned: error code = 1, msg = no such table: Users, db=/data/data/prometric.myitemwriter/databases/MyUser.db 11-23 17:47:57.085: D/AndroidRuntime(26717): Shutting down VM 11-23 17:47:57.085: W/dalvikvm(26717): threadid=1: thread exiting with uncaught exception (group=0x40bec1f8) 11-23 17:47:57.171: D/dalvikvm(26717): GC_CONCURRENT freed 575K, 8% free 8649K/9351K, paused 2ms+6ms 11-23 17:47:57.179: E/AndroidRuntime(26717): FATAL EXCEPTION: main 11-23 17:47:57.179: E/AndroidRuntime(26717): java.lang.IllegalStateException: Could not execute method of the activity 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.view.View$1.onClick(View.java:3091) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.view.View.performClick(View.java:3558) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.view.View$PerformClick.run(View.java:14152) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.os.Handler.handleCallback(Handler.java:605) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.os.Handler.dispatchMessage(Handler.java:92) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.os.Looper.loop(Looper.java:137) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.app.ActivityThread.main(ActivityThread.java:4514) 11-23 17:47:57.179: E/AndroidRuntime(26717): at java.lang.reflect.Method.invokeNative(Native Method) 11-23 17:47:57.179: E/AndroidRuntime(26717): at java.lang.reflect.Method.invoke(Method.java:511) 11-23 17:47:57.179: E/AndroidRuntime(26717): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790) 11-23 17:47:57.179: E/AndroidRuntime(26717): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557) 11-23 17:47:57.179: E/AndroidRuntime(26717): at dalvik.system.NativeStart.main(Native Method) 11-23 17:47:57.179: E/AndroidRuntime(26717): Caused by: java.lang.reflect.InvocationTargetException 11-23 17:47:57.179: E/AndroidRuntime(26717): at java.lang.reflect.Method.invokeNative(Native Method) 11-23 17:47:57.179: E/AndroidRuntime(26717): at java.lang.reflect.Method.invoke(Method.java:511) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.view.View$1.onClick(View.java:3086) 11-23 17:47:57.179: E/AndroidRuntime(26717): ... 11 more 11-23 17:47:57.179: E/AndroidRuntime(26717): Caused by: android.database.sqlite.SQLiteException: no such table: Users: , while compiling: select * from Users where email = '' and pin = '' 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:68) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.database.sqlite.SQLiteProgram.compileSql(SQLiteProgram.java:143) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.database.sqlite.SQLiteProgram.compileAndbindAllArgs(SQLiteProgram.java:361) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:127) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:94) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:53) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:47) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1685) 11-23 17:47:57.179: E/AndroidRuntime(26717): at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1659) 11-23 17:47:57.179: E/AndroidRuntime(26717): at projectname.database.UserDataSource.ValidateLogin(UserDataSource.java:73) 11-23 17:47:57.179: E/AndroidRuntime(26717): at projectname.LoginActivity.btn_login_Click(LoginActivity.java:47) 11-23 17:47:57.179: E/AndroidRuntime(26717): ... 14 more

    Read the article

  • is there a way to generate pdf containing non-ascii symbols with pisa from django template?

    - by mihailt
    Hi. i'm trying to generate a pdf from template using this snippet: def write_pdf(template_src, context_dict): template = get_template(template_src) context = Context(context_dict) html = template.render(context) result = StringIO.StringIO() pdf = pisa.pisaDocument(StringIO.StringIO(html.encode("UTF-8")), result) if not pdf.err: return http.HttpResponse(result.getvalue(), mimetype='application/pdf') except Exception('PDF error') but all non-latin symbols are not showing correctly, the template and view are saved using utf-8 encoding. i've tried saving view as ANSI and then to user unicode(html,"UTF-8"), but it throws TypeError. Also i thought that maybe it's because the default fonts somehow do not support utf-8 so according to pisa documentation i tried to set fontface in template body in style section. that still gave no results. Does any one have some ideas how to solve this issue?

    Read the article

  • How to implement List, Set, and Map in null free design?

    - by Pyrolistical
    Its great when you can return a null/empty object in most cases to avoid nulls, but what about Collection like objects? In Java, Map returns null if key in get(key) is not found in the map. The best way I can think of to avoid nulls in this situation is to return an Entry<T> object, which is either the EmptyEntry<T>, or contains the value T. Sure we avoid the null, but now you can have a class cast exception if you don't check if its an EmptyEntry<T>. Is there a better way to avoid nulls in Map's get(K)? And for argument sake, let's say this language don't even have null, so don't say just use nulls.

    Read the article

  • Parse simple JSON with Jackson

    - by siik
    Here is my JSON: { "i": 53691, "s": "Something" } Here is my model: public class Test() { private int i; private String s; public setInt(int i){ this.i = i; } public setString(String s){ this.s = s; } // getters here } Here is my class for server's response: public class ServerResponse(){ private Test; public void setTest(Test test){ this.test = test;} public Test getTest(){ return Test; } } When I do: ObjectMapper mapper = new ObjectMapper(); mapper.readValue(json, serverResponse); I'm getting an exception like: JsonProcessingException: Unrecognized field "i" (Class MyClass), not marked as ignorable Please advice.

    Read the article

  • Unable to authenticate in imap server through windows application

    - by Nila
    In C#,I'm using LumiSoft.Net.IMAP.Client library to connect to the imap server and I'm viewing my emails through that class library... I used it for more than 5 months. Now, when I tried to authenticate, it shows the following exception (even though the server is connected..) Server returned:CAPABILITY IMAP4rev1 UNSELECT LITERAL+ IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE I searched for this error. I came to know that the imap server protocol was changed so, this error occurs. Now, Wat I should do for that, whether to change my class library ?? Plz, help me...

    Read the article

< Previous Page | 424 425 426 427 428 429 430 431 432 433 434 435  | Next Page >