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  • getting proxies of the correct type in nhibernate

    - by Nir
    I have a problem with uninitialized proxies in nhibernate The Domain Model Let's say I have two parallel class hierarchies: Animal, Dog, Cat and AnimalOwner, DogOwner, CatOwner where Dog and Cat both inherit from Animal and DogOwner and CatOwner both inherit from AnimalOwner. AnimalOwner has a reference of type Animal called OwnedAnimal. Here are the classes in the example: public abstract class Animal { // some properties } public class Dog : Animal { // some more properties } public class Cat : Animal { // some more properties } public class AnimalOwner { public virtual Animal OwnedAnimal {get;set;} // more properties... } public class DogOwner : AnimalOwner { // even more properties } public class CatOwner : AnimalOwner { // even more properties } The classes have proper nhibernate mapping, all properties are persistent and everything that can be lazy loaded is lazy loaded. The application business logic only let you to set a Dog in a DogOwner and a Cat in a CatOwner. The Problem I have code like this: public void ProcessDogOwner(DogOwner owner) { Dog dog = (Dog)owner.OwnedAnimal; .... } This method can be called by many diffrent methods, in most cases the dog is already in memory and everything is ok, but rarely the dog isn't already in memory - in this case I get an nhibernate "uninitialized proxy" but the cast throws an exception because nhibernate genrates a proxy for Animal and not for Dog. I understand that this is how nhibernate works, but I need to know the type without loading the object - or, more correctly I need the uninitialized proxy to be a proxy of Cat or Dog and not a proxy of Animal. Constraints I can't change the domain model, the model is handed to me by another department, I tried to get them to change the model and failed. The actual model is much more complicated then the example and the classes have many references between them, using eager loading or adding joins to the queries is out of the question for performance reasons. I have full control of the source code, the hbm mapping and the database schema and I can change them any way I want (as long as I don't change the relationships between the model classes). I have many methods like the one in the example and I don't want to modify all of them. Thanks, Nir

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  • Rails preventing duplicates in polymorphic has_many :through associations

    - by seaneshbaugh
    Is there an easy or at least elegant way to prevent duplicate entries in polymorphic has_many through associations? I've got two models, stories and links that can be tagged. I'm making a conscious decision to not use a plugin here. I want to actually understand everything that's going on and not be dependent on someone else's code that I don't fully grasp. To see what my question is getting at, if I run the following in the console (assuming the story and tag objects exist in the database already) s = Story.find_by_id(1) t = Tag.find_by_id(1) s.tags << t s.tags << t My taggings join table will have two entries added to it, each with the same exact data (tag_id = 1, taggable_id = 1, taggable_type = "Story"). That just doesn't seem very proper to me. So in an attempt to prevent this from happening I added the following to my Tagging model: before_validation :validate_uniqueness def validate_uniqueness taggings = Tagging.find(:all, :conditions => { :tag_id => self.tag_id, :taggable_id => self.taggable_id, :taggable_type => self.taggable_type }) if !taggings.empty? return false end return true end And it works almost as intended, but if I attempt to add a duplicate tag to a story or link I get an ActiveRecord::RecordInvalid: Validation failed exception. It seems that when you add an association to a list it calls the save! (rather than save sans !) method which raises exceptions if something goes wrong rather than just returning false. That isn't quite what I want to happen. I suppose I can surround any attempts to add new tags with a try/catch but that goes against the idea that you shouldn't expect your exceptions and this is something I fully expect to happen. Is there a better way of doing this that won't raise exceptions when all I want to do is just silently not save the object to the database because a duplicate exists?

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  • Why doesn't my Unity DependencyResolver work on shared hosting but works locally?

    - by frennky
    I'm trying to deploy ASP.NET MVC 3 application wich uses Unity as a IoC container. Application works fine on local server, but when deployed it throws an exception: No parameterless constructor defined for this object. And this is thrown for a controller that should get some repository injected by my Unity DependencyResolver. I've installed Unity with NuGet so it should be referenced directly, and I've checked that it gets copied to bin folder. Edit: Here's the stack trace: [MissingMethodException: No parameterless constructor defined for this object.] System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0 System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache) +98 System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean skipCheckThis, Boolean fillCache) +241 System.Activator.CreateInstance(Type type, Boolean nonPublic) +69 System.Web.Mvc.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType) +67 [InvalidOperationException: An error occurred when trying to create a controller of type 'nBlog.Controllers.HomeController'. Make sure that the controller has a parameterless public constructor.] System.Web.Mvc.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType) +182 System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType) +80 System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName) +74 System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory) +196 System.Web.Mvc.<>c__DisplayClass6.<BeginProcessRequest>b__2() +49 System.Web.Mvc.<>c__DisplayClassb`1.<ProcessInApplicationTrust>b__a() +13 System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7 System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22 System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Func`1 func) +124 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +98 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, Object state) +50 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) +16 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8841400 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +18 Anyone have an idea what might be the problem?

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  • Base class deleted before subclass during python __del__ processing

    - by Oddthinking
    Context I am aware that if I ask a question about Python destructors, the standard argument will be to use contexts instead. Let me start by explaining why I am not doing that. I am writing a subclass to logging.Handler. When an instance is closed, it posts a sentinel value to a Queue.Queue. If it doesn't, a second thread will be left running forever, waiting for Queue.Queue.get() to complete. I am writing this with other developers in mind, so I don't want a failure to call close() on a handler object to cause the program to hang. Therefore, I am adding a check in __del__() to ensure the object was closed properly. I understand circular references may cause it to fail in some circumstances. There's not a lot I can do about that. Problem Here is some simple example code: explicit_delete = True class Base: def __del__(self): print "Base class cleaning up." class Sub(Base): def __del__(self): print "Sub-class cleaning up." Base.__del__(self) x = Sub() if explicit_delete: del x print "End of thread" When I run this I get, as expected: Sub-class cleaning up. Base class cleaning up. End of thread If I set explicit_delete to False in the first line, I get: End of thread Sub-class cleaning up. Exception AttributeError: "'NoneType' object has no attribute '__del__'" in <bound method Sub.__del__ of <__main__.Sub instance at 0x00F0B698>> ignored It seems the definition of Base is removed before the x._del_() is called. The Python Documentation on _del_() warns that the subclass needs to call the base-class to get a clean deletion, but here that appears to be impossible. Can you see where I made a bad step?

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  • send message to a web service according to its schema

    - by hguser
    Hi: When I request a web servcie,it give me a response which show me the required parameters and its schema,for example: the response of the web service for the descriptin of the parameter Then I start to organize the next requset according to the parameter,for the parameter "bandWith" I set it as the following: <InputParameter parameterID="bandWidth"> <value> <commonData> <swe:Category> <swe:quality> <swe:Text> <swe:value>low</swe:value> </swe:Text> </swe:quality> </swe:Category> </commonData> </value> </InputParameter> However I got a exception : error information Also I tried the following format,things does not chage: <InputParameter parameterID="bandWidth"> <value> <commonData> <swe:Category> <swe:value>low</swe:value> </swe:Category> </commonData> </value> </InputParameter> So, I wonder how do define the parameter to match the format it defined? The schema can be found there: The schema

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  • Java: Reading images and displaying as an ImageIcon

    - by 11helen
    I'm writing an application which reads and displays images as ImageIcons (within a JLabel), the application needs to be able to support jpegs and bitmaps. For jpegs I find that passing the filename directly to the ImageIcon constructor works fine (even for displaying two large jpegs), however if I use ImageIO.read to get the image and then pass the image to the ImageIcon constructor, I get an OutOfMemoryError( Java Heap Space ) when the second image is read (using the same images as before). For bitmaps, if I try to read by passing the filename to ImageIcon, nothing is displayed, however by reading the image with ImageIO.read and then using this image in the ImageIcon constructor works fine. I understand from reading other forum posts that the reason that the two methods don't work the same for the different formats is down to java's compatability issues with bitmaps, however is there a way around my problem so that I can use the same method for both bitmaps and jpegs without an OutOfMemoryError? (I would like to avoid having to increase the heap size if possible!) The OutOfMemoryError is triggered by this line: img = getFileContentsAsImage(file); and the method definition is: public static BufferedImage getFileContentsAsImage(File file) throws FileNotFoundException { BufferedImage img = null; try { ImageIO.setUseCache(false); img = ImageIO.read(file); img.flush(); } catch (IOException ex) { //log error } return img; } The stack trace is: Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap space at java.awt.image.DataBufferByte.<init>(DataBufferByte.java:58) at java.awt.image.ComponentSampleModel.createDataBuffer(ComponentSampleModel.java:397) at java.awt.image.Raster.createWritableRaster(Raster.java:938) at javax.imageio.ImageTypeSpecifier.createBufferedImage(ImageTypeSpecifier.java:1056) at javax.imageio.ImageReader.getDestination(ImageReader.java:2879) at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(JPEGImageReader.java:925) at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(JPEGImageReader.java:897) at javax.imageio.ImageIO.read(ImageIO.java:1422) at javax.imageio.ImageIO.read(ImageIO.java:1282) at framework.FileUtils.getFileContentsAsImage(FileUtils.java:33)

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  • A linked list with multiple heads in Java

    - by Emile
    Hi, I have a list in which I'd like to keep several head pointers. I've tried to create multiple ListIterators on the same list but this forbid me to add new elements in my list... (see Concurrent Modification exception). I could create my own class but I'd rather use a built-in implementation ;) To be more specific, here is an inefficient implementation of two basic operations and the one wich doesn't work : class MyList <E { private int[] _heads; private List<E _l; public MyList ( int nbHeads ) { _heads = new int[nbHeads]; _l = new LinkedList<E(); } public void add ( E e ) { _l.add(e); } public E next ( int head ) { return _l.get(_heads[head++]); // ugly } } class MyList <E { private Vector<ListIterator<E _iters; private List<E _l; public MyList ( int nbHeads ) { _iters = new Vector<ListIterator<E(nbHeads); _l = new LinkedList<E(); for( ListIterator<E iter : _iters ) iter = _l.listIterator(); } public void add ( E e ) { _l.add(e); } public E next ( int head ) { // ConcurrentModificationException because of the add() return _iters.get(head).next(); } } Emile

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  • Best Practice - Removing item from generic collection in C#

    - by Matt Davis
    I'm using C# in Visual Studio 2008 with .NET 3.5. I have a generic dictionary that maps types of events to a generic list of subscribers. A subscriber can be subscribed to more than one event. private static Dictionary<EventType, List<ISubscriber>> _subscriptions; To remove a subscriber from the subscription list, I can use either of these two options. Option 1: ISubscriber subscriber; // defined elsewhere foreach (EventType event in _subscriptions.Keys) { if (_subscriptions[event].Contains(subscriber)) { _subscriptions[event].Remove(subscriber); } } Option 2: ISubscriber subscriber; // defined elsewhere foreach (EventType event in _subscriptions.Keys) { _subscriptions[event].Remove(subscriber); } I have two questions. First, notice that Option 1 checks for existence before removing the item, while Option 2 uses a brute force removal since Remove() does not throw an exception. Of these two, which is the preferred, "best-practice" way to do this? Second, is there another, "cleaner," more elegant way to do this, perhaps with a lambda expression or using a LINQ extension? I'm still getting acclimated to these two features. Thanks. EDIT Just to clarify, I realize that the choice between Options 1 and 2 is a choice of speed (Option 2) versus maintainability (Option 1). In this particular case, I'm not necessarily trying to optimize the code, although that is certainly a worthy consideration. What I'm trying to understand is if there is a generally well-established practice for doing this. If not, which option would you use in your own code?

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  • SQL Server Compact timed out waiting for a lock

    - by jankhana
    Hi all, I'm having an application in that i use Sql Compact 3.5 with VS2008. I'm running multiple threads in my application which contacts the compact database and accesses the row. It selects and deletes those rows in a fashion i.e selecting and giving to the application 5 rows and deleting those rows from the table. It works great with a single thread but if i use multiple threads i.e if 3 or more threads are running I get very often the TimeOut Error!!! I have increased the Time out property in the connection string but it didn't give me expected result. The error log is as follow: SQL Server Compact timed out waiting for a lock. The default lock time is 2000ms for devices and 5000ms for desktops. The default lock timeout can be increased in the connection string using the ssce: default lock timeout property. [ Session id = 5,Thread id = 4204,Process id = 4808,Table name = XXX,Conflict type = x lock (s blocks),Resource = TAB ] The Query that I use to retrieve is as follows: " select Top(5) * from TableName order by id; delete from TableName where id in(select top(5) id from TableName order by id); " Is there any way by which we can avoid this Time Out exception??????? The above query I un as a transaction in VS2008 one using SQLCECommand and the other using SqlCEDataAdapter. Any Idea!!!!!! Reply

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  • Hazelcast Distributed Executor Service KeyOwner

    - by János Veres
    I have problem understanding the concept of Hazelcast Distributed Execution. It is said to be able to perform the execution on the owner instance of a specific key. From Documentation: <T> Future<T> submitToKeyOwner(Callable<T> task, Object key) Submits task to owner of the specified key and returns a Future representing that task. Parameters: task - task key - key Returns: a Future representing pending completion of the task I believe that I'm not alone to have a cluster built with multiple maps which might actually use the same key for different purposes, holding different objects (e.g. something along the following setup): IMap<String, ObjectTypeA> firstMap = HazelcastInstance.getMap("firstMap"); IMap<String, ObjectTypeA_AppendixClass> secondMap = HazelcastInstance.getMap("secondMap"); To me it seems quite confusing what documentation says about the owner of a key. My real frustration is that I don't know WHICH - in which map - key does it refer to? The documentation also gives a "demo" of this approach: import com.hazelcast.core.Member; import com.hazelcast.core.Hazelcast; import com.hazelcast.core.IExecutorService; import java.util.concurrent.Callable; import java.util.concurrent.Future; import java.util.Set; import com.hazelcast.config.Config; public void echoOnTheMemberOwningTheKey(String input, Object key) throws Exception { Callable<String> task = new Echo(input); HazelcastInstance hz = Hazelcast.newHazelcastInstance(); IExecutorService executorService = hz.getExecutorService("default"); Future<String> future = executorService.submitToKeyOwner(task, key); String echoResult = future.get(); } Here's a link to the documentation site: Hazelcast MultiHTML Documentation 3.0 - Distributed Execution Did any of you guys figure out in the past what key does it want?

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  • Android - BroadcastReceiver CONNECTIVITY ACTION

    - by Marc Ortiz
    in my project there's a service that listens for changes in the connectivity. When wifi is switched off to on then it gets called. The problem it's that i'm using a fragment and inside a fragment there's a button with the setonclicklistener(); and onclick(); SOMETIMES when i touch the button then the service receives an intent that the connectivity has changed (the method gets called without any reason...). Here's the code of my fragment activity for the viewpager layout: public static class FragmentSelection extends Fragment { int mNum; static FragmentSelection newInstance(int num) { FragmentSelection f = new FragmentSelection(); // Supply num input as an argument. Bundle args = new Bundle(); args.putInt("num", num); f.setArguments(args); return f; } /** * When creating, retrieve this instance's number from its arguments. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mNum = (getArguments() != null ? getArguments().getInt("num") : 1) + 1; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { final View v = inflater.inflate(R.layout.fragment_intro_contenido, container, false); Button btStart = (Button) v.findViewById(R.id.btChanged); final CheckBox cbSMS = (CheckBox) v.findViewById(R.id.checkBoxSms); final CheckBox cbCalls = (CheckBox) v .findViewById(R.id.checkBoxLlamadas); final CheckBox cbApps = (CheckBox) v .findViewById(R.id.checkBoxApps); final CheckBox cbPosition = (CheckBox) v .findViewById(R.id.checkBoxPosicion); final CheckBox cbContacts = (CheckBox) v .findViewById(R.id.checkBoxContactos); final CheckBox cbAll = (CheckBox) v.findViewById(R.id.checkBoxAll); cbSMS.setChecked(true); cbCalls.setChecked(true); cbApps.setChecked(true); cbPosition.setChecked(true); cbContacts.setChecked(true); cbAll.setChecked(true); btStart.setOnClickListener(new View.OnClickListener() { public void onClick(View c) { Intent i = new Intent(); i.setClass(v.getContext(), AnonymeActivity.class); if (!cbSMS.isChecked()) { i.putExtra("sms", 0); } else { i.putExtra("sms", 1); } if (!cbCalls.isChecked()) { i.putExtra("calls", 0); } else { i.putExtra("calls", 1); } if (cbContacts.isChecked()) { i.putExtra("contacts", 1); } else { i.putExtra("contacts", 0); } if (cbApps.isChecked()) { i.putExtra("apps", 1); } else { i.putExtra("apps", 0); } if (!cbPosition.isChecked()) { i.putExtra("gps", 0); } else { i.putExtra("gps", 1); } if (!cbAll.isChecked()) { if (cbSMS.isChecked() && cbCalls.isChecked() && cbContacts.isChecked() && cbApps.isChecked() && cbPosition.isChecked()) { i.putExtra("all", 1); } else { i.putExtra("all", 0); } } else { i.putExtra("all", 1); } startActivity(i); } }); return v; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); } } My BroadcastReceiver class: class Broadcast_Reciver extends BroadcastReceiver implements Variables { CheckConexion cc; @Override public void onReceive(Context contxt, Intent intent) { // Cuando hay un evento, lo diferenciamos y hacemos una acción. if (intent.getAction().equals(SMS_RECEIVED)) { Sms sms = new Sms(null, contxt); sms.uploadNewSms(intent); } else if (intent.getAction().equals(Intent.ACTION_BATTERY_LOW)) { // st.batterylow(contxt); } else if (intent.getAction().equals(Intent.ACTION_POWER_CONNECTED)) { // st.power(1, contxt); } else if (intent.getAction().equals(Intent.ACTION_POWER_DISCONNECTED)) { // st.power(0, contxt); } else if (intent.getAction().equals(Intent.ACTION_CALL_BUTTON)) { // Notify } else if (intent.getAction().equals(Intent.ACTION_CAMERA_BUTTON)) { // Notify } else if (intent.getAction().equals(Intent.ACTION_PACKAGE_ADDED) || intent.getAction().equals(Intent.ACTION_PACKAGE_CHANGED) || intent.getAction().equals(Intent.ACTION_PACKAGE_REMOVED)) { Database db = new Database(contxt); if (db.open().Preferences(4)) { Uri data = intent.getData(); new ListApps(contxt).import_app(intent, contxt, data, intent.getAction()); } db.close(); } else if (intent.getAction().equals( ConnectivityManager.CONNECTIVITY_ACTION)) { cc = new CheckConexion(contxt); if (cc.isOnline()) { Database db = new Database(contxt); if (db.open().move() == 1) { new UploadOffline(contxt); } db.close(); } } } } And the errors: 9-03 23:20:37.887: E/SqliteDatabaseCpp(2715): CREATE TABLE android_metadata failed 09-03 23:20:37.887: E/SQLiteDatabase(2715): Failed to open the database. closing it. 09-03 23:20:37.887: E/SQLiteDatabase(2715): android.database.sqlite.SQLiteDatabaseLockedException: database is locked 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.database.sqlite.SQLiteDatabase.native_setLocale(Native Method) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.database.sqlite.SQLiteDatabase.setLocale_(SQLiteDatabase.java:2211) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.database.sqlite.SQLiteDatabase.setLocale(SQLiteDatabase.java:2199) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:1130) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:1081) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:1167) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:833) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:221) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:157) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at com.background.Database.open(Database.java:127) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at <b><b><b><h3>com.background.Broadcast_Reciver.onReceive(BroadcastService.java:100)</h3> 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:728) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.os.Handler.handleCallback(Handler.java:605) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.os.Handler.dispatchMessage(Handler.java:92) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.os.Looper.loop(Looper.java:137) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at android.app.ActivityThread.main(ActivityThread.java:4507) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at java.lang.reflect.Method.invokeNative(Native Method) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at java.lang.reflect.Method.invoke(Method.java:511) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557) 09-03 23:20:37.887: E/SQLiteDatabase(2715): at dalvik.system.NativeStart.main(Native Method) 09-03 23:20:37.887: D/AndroidRuntime(2715): Shutting down VM 09-03 23:20:37.887: W/dalvikvm(2715): threadid=1: thread exiting with uncaught exception (group=0x40c3b1f8) 09-03 23:20:37.902: E/AndroidRuntime(2715): FATAL EXCEPTION: main 09-03 23:20:37.902: E/AndroidRuntime(2715): java.lang.RuntimeException: Error receiving broadcast Intent { act=android.net.conn.CONNECTIVITY_CHANGE flg=0x10000010 (has extras) } in com.background.Broadcast_Reciver@415203f8 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:737) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.os.Handler.handleCallback(Handler.java:605) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.os.Handler.dispatchMessage(Handler.java:92) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.os.Looper.loop(Looper.java:137) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.app.ActivityThread.main(ActivityThread.java:4507) 09-03 23:20:37.902: E/AndroidRuntime(2715): at java.lang.reflect.Method.invokeNative(Native Method) 09-03 23:20:37.902: E/AndroidRuntime(2715): at java.lang.reflect.Method.invoke(Method.java:511) 09-03 23:20:37.902: E/AndroidRuntime(2715): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790) 09-03 23:20:37.902: E/AndroidRuntime(2715): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557) 09-03 23:20:37.902: E/AndroidRuntime(2715): at dalvik.system.NativeStart.main(Native Method) 09-03 23:20:37.902: E/AndroidRuntime(2715): Caused by: android.database.sqlite.SQLiteDatabaseLockedException: database is locked 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.database.sqlite.SQLiteDatabase.native_setLocale(Native Method) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.database.sqlite.SQLiteDatabase.setLocale_(SQLiteDatabase.java:2211) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.database.sqlite.SQLiteDatabase.setLocale(SQLiteDatabase.java:2199) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:1130) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:1081) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:1167) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:833) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:221) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:157) 09-03 23:20:37.902: E/AndroidRuntime(2715): at com.background.Database.open(Database.java:127) 09-03 23:20:37.902: E/AndroidRuntime(2715): at com.background.Broadcast_Reciver.onReceive(BroadcastService.java:100) 09-03 23:20:37.902: E/AndroidRuntime(2715): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:728) 09-03 23:20:37.902: E/AndroidRuntime(2715): ... 9 more Checkout that the program goes into BroadcastReceiver class and i don't understand why!

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  • Phonegap bluetooth plugin not working

    - by user2907333
    First time poster here , so I'm sorry if this question is asked incorrect or if there are any issues. I'm working on a phonegap app for which I need to be able to set up a bluetooth connection between a tablet (android in this case) and a Win CE PC. Currently i'm trying to get the bluetooth part to work on the tablet and i'm using the plug in you can find at https://github.com/tanelih/phonegap-bluetooth-plugin And for the momemt I'm just trying to enable and disable the Bluetooth on the device. In my bluetoothpage.js file i'm using the following method window.bluetooth.prototype.enable(bluetoothTestSucces(),bluetoothTestFail()); The bluetoothTestSucces and bluetoothTestFail functions just show an alert, nothing else. And if i understand the working of phonegap plugins correctly this uses the following code in my bluetooth.js file Bluetooth.prototype.enable = function(onSuccess, onError) { exec(onSuccess, onError, "Bluetooth", "enable", []); } which calls private void enable(JSONArray args, CallbackContext callbackCtx) { try { _bluetooth.enable(); callbackCtx.success(); } catch(Exception e) { this.error(callbackCtx, e.getMessage(), BluetoothError.ERR_UNKNOWN); } } in my BluetoothPlugin.java file. And if the java file returns Succes bluetoothTestSucces() is used and if the java file returns an error bluetoothTestFail() is used. But for some reason it runs both and does not turn on bluetooth on my device. I'm almost certain I've forgotten a link to a file or have linked it wrong somewhere. But I've followed the instructions that were included in the plugin. I've included the Bluetooth permission in my AndoridManifest file which is located in the root directory of my app I've included the plugin in my config.xml file which is located in res/xml I've required the plugin after the deviceready event as follows document.addEventListener("deviceready", onDeviceReady, false); function onDeviceReady() { window.bluetooth = cordova.require("cordova/plugin/bluetooth"); } Could anyone tell me how to fix this or what i've done wrong? thanks Martijn PS: I'm sorry for any language errors, English isn't my native language. edit: forgot to include some code

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  • C#.NET DataGridView - update database

    - by Geo Ego
    I know this is a basic function of the DataGridView, but for some reason, I just can't get it to work. I just want the DataGridView on my Windows form to submit any changes made to it to the database when the user clicks the "Save" button. On form load, I populate the DataGridView and that's working fine. In my save function, I basically have the following (I've trimmed out some of the code around it to get to the point): using (SqlDataAdapter ruleTableDA = new SqlDataAdapter("SELECT rule.fldFluteType AS [Flute], rule.fldKnife AS [Knife], rule.fldScore AS [Score], rule.fldLowKnife AS [Low Knife], rule.fldMatrixScore AS [Matrix Score], rule.fldMatrix AS [Matrix] FROM dbo.tblRuleTypes rule WHERE rule.fldMachine_ID = '1003'", con)) { SqlCommandBuilder commandBuilder = new SqlCommandBuilder(ruleTableDA); DataTable dt = new DataTable(); dt = RuleTable.DataSource as DataTable; ruleTableDA.Fill(dt); ruleTableDA.Update(dt); } Okay, so I edited the code to do the following: build the commands, create a DataTable based on the DataGridView (RuleTable), fill the DataAdapter with the DataTable, and update the database. Now ruleTableDA.Update(dt) is throwing the exception "Concurrency violation: the UpdateCommand affected 0 of the expected 1 records." Thanks very much!

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  • Can't send an email using a google apps account with PHPMailer

    - by Chris
    I'm trying to simply send an email using my google apps account with php. I am able to send an email in a .net application using the port 587 host smtp.googlemail.com and SSL enabled. The username is my full email address. require_once('PHPMailer_v5.1\class.phpmailer.php'); try { $mail = new PHPMailer(); $mail->Mailer = 'smtp'; $mail->SMTPSecure = 'tls'; $mail->Host = $host; $mail->Port = 587; $mail->SMTPAuth = true; $mail->Username = $from; $mail->Password = $password; $mail->AddAddress($to, $to_name); $mail->From = $from; $mail->FromName = $from_name; $mail->Subject = $subject; $mail->MsgHTML($body); $mail->IsHTML(true); $mail->Send(); } catch (phpmailerException $e) { echo $e->errorMessage(); } catch (Exception $e) { echo $e->getMessage(); } Haven't been able to get this to work, but I've tried several different variations of this. $mail->SMTPSecure = 'ssl'; // Error: Could not connect to SMTP host. $mail->SMTPSecure = 'tls'; // Takes forever, then I get "this stream does not support SSL/crypto PHPMailer_v5.1\class.smtp.php" I don't care how, but I need to send an email using gmail here. It can be with this library or a different one.

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  • NSMutableDictionary with UIButton* as keys - iPhone development

    - by Alejandro A.
    Hi, I'm new to iPhone development and I have a question that may have a very simple answer. I am trying to add buttons to a view and these buttons are associated with a custom class that I defined. When I add the buttons to the view, I would like to know what class these buttons correspond to. This is because when I press the button, I need to get some information about the class, but the receiver of the message is another class. I couldn't find information about an error that I'm getting on the web. The problem I have is that I'm trying to create an NSMutableDictionary where the keys are of type UIButton* and the values are of my custom type: // create button for unit UIButton* unitButton = [[UIButton alloc] init]; [sourceButtonMap setObject:composite forKey:unitButton]; Of course, the sourceButtonMap is defined in the class and initialized in the init function as sourceButtonMap = [[NSMutableDictionary alloc] init]; The error I get when I try to add the key-value pair is: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UIButton copyWithZone:]: unrecognized selector sent to instance 0x3931e90' Is this happening because I can't store UIButton* as keys? Can anyone point me why I'm getting this error? Thank you all, aa

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  • How can we call an activity through service in android???

    - by Shalini Singh
    Hi! friends, i am a android developer,,, want to know is it possible to call an activity through background service in android like : import android.app.Service; import android.content.Intent; import android.content.SharedPreferences; import android.media.MediaPlayer; import android.os.Handler; import android.os.IBinder; import android.os.Message; public class background extends Service{ private int timer1; @Override public void onCreate() { // TODO Auto-generated method stub super.onCreate(); SharedPreferences preferences = getSharedPreferences("SaveTime", MODE_PRIVATE); timer1 = preferences.getInt("time", 0); startservice(); } @Override public IBinder onBind(Intent arg0) { // TODO Auto-generated method stub return null; } private void startservice() { Handler handler = new Handler(); handler.postDelayed(new Runnable(){ public void run() { mediaPlayerPlay.sendEmptyMessage(0); } }, timer1*60*1000); } private Handler mediaPlayerPlay = new Handler(){ @Override public void handleMessage(Message msg) { try { getApplication(); MediaPlayer mp = new MediaPlayer(); mp = MediaPlayer.create(background.this, R.raw.alarm); mp.start(); } catch(Exception e) { e.printStackTrace(); } super.handleMessage(msg); } }; /* * (non-Javadoc) * * @see android.app.Service#onDestroy() */ @Override public void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); } } i want to call my activity......

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  • Maven Mojo & SCM Plugin: Check for a valid working directory

    - by Patrick Bergner
    Hi there. I'm using maven-scm-plugin from within a Mojo and am trying to figure out how to determine if a directory D is a valid working directory of an SCM URL U (i.e. a checkout of U to D already happened). The context is that I want to do a checkout of U if D is a working set or do an update if it isn't. The plan is to check out U to D if D does not exist, update D if D is a valid working directory of U, display an error if D exists and is not a valid working directory of U. What I tried is to call ScmManager.status(), ScmManager.list() and ScmManager.changelog() and try to guess something from their results. But that didn't work. The results from status and changelog always return something positive (isSuccess() = true, getChangedFiles() = valid List, no exceptions to catch), whereas list throws an exception in any case. ScmRepository and ScmFileSet don't seem to provide suitable methods as well. An option would be to always do an update if D exists but then I cannot tell if it is a working directory of U or any SCM working directory at all. The ideal solution would be independent of the actual SCM system and a specific ScmVersion. Thanks for your help! Patrick

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  • JPA/Hibernate query with class name?

    - by Petteri Hietavirta
    In this example com.test.Cat extends com.test.Animal and there is no field DB in CAT table of com.test.Cat explicitly defining its type (it wasn't me). When I query my animals from DB I get a collection of Animals. It is possible to sort them by class name: order by r.class but is there a way to use class name as a criteria? For example I would like to get all animals expect dogs. But no luck - even this does not work: where r.class = ? (String "ccc.test.Cat") as I get an exception: Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer at org.hibernate.type.IntegerType.set(IntegerType.java:64) at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:154) at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:136) at org.hibernate.param.PositionalParameterSpecification.bind(PositionalParameterSpecification.java:62) at org.hibernate.loader.hql.QueryLoader.bindParameterValues(QueryLoader.java:514) at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1589) at org.hibernate.loader.Loader.doQuery(Loader.java:696) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259) at org.hibernate.loader.Loader.doList(Loader.java:2228) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2125) at org.hibernate.loader.Loader.list(Loader.java:2120) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:361) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1148) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102) at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:67)

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  • Can I use the auto-generated Linq-to-SQL entity classes in 'disconnected' mode?

    - by Gary McGill
    Suppose I have an automatically-generated Employee class based on the Employees table in my database. Now suppose that I want to pass employee data to a ShowAges method that will print out name & age for a list of employees. I'll retrieve the data for a given set of employees via a linq query, which will return me a set of Employee instances. I can then pass the Employee instances to the ShowAges method, which can access the Name & Age fields to get the data it needs. However, because my Employees table has relationships with various other tables in my database, my Employee class also has a Department field, a Manager field, etc. that provide access to related records in those other tables. If the ShowAges method were to invoke any of those methods, this would cause lots more data to be fetched from the database, on-demand. I want to be sure that the ShowAges method only uses the data I have already fetched for it, but I really don't want to have to go to the trouble of defining a new class which replicates the Employee class but has fewer methods. (In my real-world scenario, the class would have to be considerably more complex than the Employee class described here; it would have several 'joined' classes that do need to be populated, and others that don't). Is there a way to 'switch off' or 'disconnect' the Employees instances so that an attempt to access any property or related object that's not already populated will raise an exception? If not, then I assume that since this must be a common requirement, there might be an already-established pattern for doing this sort of thing?

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  • about Quick Sort

    - by matin1234
    Hi I have written this code but it will print these stack traces in the console please help me thanks! (Aslo "p" and "q" are the first and last index of our array ,respectively) public class JavaQuickSort { public static void QuickSort(int A[], int p, int q) { int i, last = 0; Random rand = new Random(); if (q < 1) { return; } **swap(A, p, rand.nextInt() % (q+1));** for (i = p + 1; i <= q; i++) { if (A[i] < A[p]) { swap(A, ++last, i); } } swap(A, p, last); QuickSort(A, p, last - 1); QuickSort(A, last + 1, q); } private static void swap(int[] A, int i, int j) { int temp; temp = A[i]; **A[i] = A[j];** A[j] = temp; } public static void main(String[] args){ int[] A = {2,5,7,3,9,0,1,6,8}; **QuickSort(A, 0,8 );** System.out.println(Arrays.toString(A)); } } the Stack traces : run: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -3 at JavaQuickSort.swap(JavaQuickSort.java:38) at JavaQuickSort.QuickSort(JavaQuickSort.java:22) at JavaQuickSort.main(JavaQuickSort.java:45) Java Result: 1 BUILD SUCCESSFUL (total time: 2 seconds) I also bold those statements that cause these stack traces. like == ** ...**

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  • WCF service with PHP client - complex type as parameter not working

    - by Matt F
    Hi, I have a WCF service with three methods. Two of the methods return custom types (these work as expected), and the third method takes a custom type as a parameter and returns a boolean. When calling the third method via a PHP soap client it returns an 'Object reference not set to an instance of an object' exception. Example Custom Type: _ Public Class MyClass Private _propertyA As Double <DataMember()> _ Public Property PropertyA() As Double Get Return _propertyA End Get Set(ByVal value As Double) _propertyA = value End Set End Property Private _propertyB As Double <DataMember()> _ Public Property PropertyB() As Double Get Return _propertyB End Get Set(ByVal value As Double) _propertyB = value End Set End Property Private _propertyC As Date <DataMember()> _ Public Property PropertyC() As Date Get Return _propertyC End Get Set(ByVal value As Date) _propertyC = value End Set End Property End Class Method: Public Function Add(ByVal param As MyClass) As Boolean Implements IService1.Add ' ... End Function PHP client call: $client-Add(array('param'=array( 'PropertyA' = 1, 'PropertyB' = 2, 'PropertyC' = "2009-01-01" ))); The WCF service works fine with a .Net client but I'm new to PHP and can't get this to work. Is it possible to create an instance of 'MyClass' in PHP. Any help would be appreciated. Note: I'm using PHP 5 (XAMPP 1.7.0 for Windows). Thanks Matt

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  • Can I ignore a SIGFPE resulting from division by zero?

    - by Mikeage
    I have a program which deliberately performs a divide by zero (and stores the result in a volatile variable) in order to halt in certain circumstances. However, I'd like to be able to disable this halting, without changing the macro that performs the division by zero. Is there any way to ignore it? I've tried using #include <signal.h> ... int main(void) { signal(SIGFPE, SIG_IGN); ... } but it still dies with the message "Floating point exception (core dumped)". I don't actually use the value, so I don't really care what's assigned to the variable; 0, random, undefined... EDIT: I know this is not the most portable, but it's intended for an embedded device which runs on many different OSes. The default halt action is to divide by zero; other platforms require different tricks to force a watchdog induced reboot (such as an infinite loop with interrupts disabled). For a PC (linux) test environment, I wanted to disable the halt on division by zero without relying on things like assert.

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  • .NET out of memory troubleshooting

    - by bushman
    After reading a few enlightening articles about memory in the .NET technology, Out of Memory does not refer to physical memory, 597499. I thought I understood why a C# app would throw an out of memory exception -- until I started experimenting with two servers-- both are having 2.5 gigs of ram, windows server 2003 and identical programs running. The only significant difference between the two being one has 7% hard drive storage left and the other more than 50%. The server with 7% storage space left is consistently throwing an out of memory while the other is performing consistently well. My app is a C# web application that process' hundreds of MBs of String object. Why would this difference happen seeing that the most likely reason for the out of memory issue is out of contiguous virtual address space -- What solutions do you guys propose -- and what do you say about the following 1. turn on the 3gb switch to increase the virtual address space -- 2. instead of using one giant string object, break it up into smaller pieces and collect it in a jagged array (here I have to find a way to return to the caller in some other way as right now, the return type is a string) thanks SO

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  • Mac CoreLocation Services does not ask for permissions

    - by Ryan Nichols
    I'm writing a Mac App that needs to use CoreLocation services. The code and location works fine, as long as I manually authenticate the service inside the security preference pane. However the framework is not automatically popping up with a permission dialog. The documentation states: Important The user has the option of denying an application’s access to the location service data. During its initial uses by an application, the Core Location framework prompts the user to confirm that using the location service is acceptable. If the user denies the request, the CLLocationManager object reports an appropriate error to its delegate during future requests. I do get an error to my delegate, and the value of +locationServicesEnabled is correct on CLLocationManager. The only part missing is the prompt to the user about permissions. This occurs on my development MPB and a friends MBP. Neither of us can figure out whats wrong. Has anyone run into this? Relevant code: _locationManager = [CLLocationManager new]; [_locationManager setDelegate:self]; [_locationManager setDesiredAccuracy:kCLLocationAccuracyKilometer]; ... [_locationManager startUpdatingLocation]; UPDATE: Answer It seems there is a problem with Sandboxing in which the CoreLocation framework is not allowed to talk to com.apple.CoreLocation.agent. I suspect this agent is responsible for prompting the user for permissions. If you add the Location Services Entitlement (com.apple.security.personal-information.location) it only gives your app the ability to use the CL framework. However you also need access to the CoreLocation agent to ask the user for permissions. You can give your app access by adding the entitlement 'com.apple.security.temporary-exception.mach-lookup.global-name' with a value of 'com.apple.CoreLocation.agent'. Users will be prompted for access automatically like you would expect. I've filed a bug to apple on this already.

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  • Office 2003 interop problems, interface, method not found.

    - by Snake
    This problem is making me crazy. Actually I have multiple problems. First one: Why on earth are is there a _Worksheet and a Worksheetinterface in the Excel interop. They both look the same, except for some attributes on the methods. It's confusing! Second of all: my job today is making a VB.NET file more strict, by settings Option Strict On and Option Explicit On While it works for most files, I'm bumping into a problem. Here's a little code piece: Private _pivotTable As Excel.PivotTable With _pivotTable pvf = .AddDataField(pvc) End With PivotTable.AddDataField is defined on the MSDN page: http://msdn.microsoft.com/en-us/library/microsoft.office.interop.excel.pivottable.adddatafield(office.11).aspx When I check my local Interop dll w/ Reflector that method is NOT there. When I run the application, and step through it, the method just works. When I try to step INTO the method, I get an LateBound Exception. WTF? So the question is: why are the interfaces defined more than once (twice sometimes?). 2nd question. AddDataField trouble

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