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  • How to enforce lazy loading of entities on certain conditions

    - by Samuel
    We have an JPA @Entity class (say User) which has a @ManyToOne reference (say Address) loaded using the EAGER option which in turn loads it's own @ManyToOne fields (say Country) in a EAGER fashion. We use the EntityQuery interface to count the list of User's based on a search criteria, during such a load all the @ManyToOne fields which have been marked as EAGER get loaded. But in order to perform a EntityQuery.resultCount(), I actually don't need to load the @ManyToOne fields. Is there a way to prevent loading of the EAGER fields in such cases so that we can avoid the unnecessary joins?

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  • How to use SQLiteOpenHelper without or less restrictive use of Context?

    - by Pentium10
    If you extend SQLiteOpenHelper, for the Constructor you have to use a Context. I am wondering if there is a way to leave this out, and be able to work with database tables without a Context. Or at least be least restrictive, I mean a way of project/class structure that will make history the several context passings I have to do now. As it is my application has several level of classes, chained in each other, and there are a few that connects to the database, but have no whatsoever influence on the interface, so they don't actually need the Context. Are you creating your classes in the way that you pass each time a Context to them? If not, how you do, how you reuse a Context in a short class?

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  • In which language the KIS application might have been developed??

    - by Jeba
    Hello all, I just went through this link http://www.pcauthority.com.au/Feature/91093,the-tsar-of-antivirus.aspx and found that it's developed using c/c++ and visual studio with a little assembly language support. As a programmer i just want to know in what programming language the kaspersky internet security User Interface(UI) has been developed? Might be using QT(coz. of c++)? or using MFC(coz. of visual studio)?? With side tab like thing the UI looks good. Expecting the answers from expert analysts.

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  • NSCoding and ostream

    - by Stephen Furlani
    Is there a better way to serialize an ObjC object than using /NSKeyedArchive? I need to distribute the object through a C++ std:ostream-like object to put on another computer. The object has over 122 members of various types... for which wants me to [coder encodeObject: (id) forKey: @"blah"]; for all of them... Does anyone have a nice Perl Script that will at least write it out? I don't even know if the objects it contains implement which means this could turn into a huge ugly mess since I can't change the source of the object - I'll have to inherit & add the @interface to it... Or am I being dumb? Apple's guide doesn't help me since archiving to XML won't pass nicely though the ostream. Is there a better way to do this? -S!

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  • NSXMLParser values not being retained.

    - by user574947
    This is similar to my previous question. I didn't get an answer, maybe by changing the question I might get an answer. Here is my parsing code: -(void) parser:(NSXMLParser *) parser didStartElement:(NSString *) elementName namespaceURI:(NSString *) namespaceURI qualifiedName:(NSString *) qName attributes:(NSDictionary *) attributeDict { if ([elementName isEqualToString:kimgurl] || [elementName isEqualToString:kone_x] || [elementName isEqualToString:kone_y] || [elementName isEqualToString:kone_radius] || [elementName isEqualToString:ktwo_x] || [elementName isEqualToString:ktwo_y] || [elementName isEqualToString:ktwo_radius]) { elementFound = YES; theItems = [[Items alloc] init]; } } - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { if([elementName isEqualToString:kimgurl]) { theItems.imageURL = self.currentValue; [self.currentValue setString:@""]; } else if([elementName isEqualToString:kone_x]) { theItems.iOne_X = self.currentValue; [self.currentValue setString:@""]; } else if([elementName isEqualToString:kone_y]) { theItems.iOne_Y = self.currentValue; [self.currentValue setString:@""]; } else if([elementName isEqualToString:kone_radius]) { theItems.iOne_Radius = self.currentValue; [self.currentValue setString:@""]; } else if([elementName isEqualToString:ktwo_x]) { theItems.iTwo_X = self.currentValue; [self.currentValue setString:@""]; } else if([elementName isEqualToString:ktwo_y]) { theItems.iTwo_Y = self.currentValue; [self.currentValue setString:@""]; } else if([elementName isEqualToString:ktwo_radius]) { theItems.iTwo_Radius = self.currentValue; [self.currentValue setString:@""]; } } -(void) parserDidEndDocument:(NSXMLParser *)parser { NSLog(@"enddocument: %@", theItems.imageURL); } -(void)parser:(NSXMLParser *) parser foundCharacters:(NSString *)string { if (elementFound == YES) { if(!currentValue) { currentValue = [NSMutableString string]; } [currentValue appendString: string]; } } When I get to parserDidEndDocument. The theItems class is empty. Here is Items.h #import <Foundation/Foundation.h> @interface Items : NSObject { @private //parsed data NSString *imageURL; NSString *iOne_X; NSString *iOne_Y; NSString *iOne_Radius; NSString *iTwo_X; NSString *iTwo_Y; NSString *iTwo_Radius; } @property (nonatomic, retain) NSString *imageURL; @property (nonatomic, retain) NSString *iOne_X; @property (nonatomic, retain) NSString *iOne_Y; @property (nonatomic, retain) NSString *iOne_Radius; @property (nonatomic, retain) NSString *iTwo_X; @property (nonatomic, retain) NSString *iTwo_Y; @property (nonatomic, retain) NSString *iTwo_Radius; @end here is Items.m #import "Items.h" @implementation Items @synthesize imageURL; @synthesize iOne_X; @synthesize iOne_Y; @synthesize iOne_Radius; @synthesize iTwo_X; @synthesize iTwo_Y; @synthesize iTwo_Radius; -(void)dealloc { [imageURL release]; [iOne_X release]; [iOne_Y release]; [iOne_Radius release]; [iTwo_X release]; [iTwo_Y release]; [iTwo_Radius release]; [super dealloc]; } @end here is my RootViewController.h #import <UIKit/UIKit.h> @class Items; @interface RootViewController : UIViewController <NSXMLParserDelegate> { NSMutableData *downloadData; NSURLConnection *connection; BOOL elementFound; NSMutableString *currentValue; NSMutableDictionary *pictures; //---xml parsing--- NSXMLParser *xmlParser; Items *theItems; NSMutableArray *aItems; } @property (nonatomic, retain) Items *theItems; @property (nonatomic, retain) NSMutableArray *aItems; @property (nonatomic, retain) NSMutableString *currentValue; @property (nonatomic, retain) NSMutableData *downloadData; @property (nonatomic, retain) NSURLConnection *connection; @end xml file example <?xml version="1.0" encoding="utf-8"?> <data> <test> <url>url</url> <one_x>83</one_x> <one_y>187</one_y> <one_radius>80</one_radius> <two_x>183</two_x> <two_y>193</two_y> <two_radius>76</two_radius> </test> </data>

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  • Problem with accessing classes from another class.

    - by srikanth rongali
    I have a classA, classB,classC. I have another class classABC; All are CCLayer inherited. I need to call all the classA, classB, classC from classABC. #import <Foundation/Foundation.h> #import "cocos2d.h" @interface classABC : CCLayer { classA *aClass; } @property(nonatomic, retain)classA *aClass; @end #import "classABC" #import "classA.h" #import "classB.h" #import "classC.h" @implementation classABC -(id)init { if( (self = [super init]) ) { ClassA *aClass = [[ClassA alloc]init]; CCScene *aClassS = [CCScene node]; CCLayer * aClassL = [aClass node]; [aClassS addChild: aClassL]; [[CCDirector sharedDirector] setAnimationInterval:60.0/60]; [[CCDirector sharedDirector] replaceScene: aClass]; } return self; } @end But I am not getting the classA displayed. How should I do it ? Thank You.

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  • Simple iPhone tally method question

    - by Rob
    Just trying to create a simple method that counts up 1 on the tally when the button is pressed. My knowledge is extremely limited and I am pretty sure that my problem is somewhere in the method implementation: -(IBAction) updateTally:(id) sender { NSString *text; int total = 0; total = total + 1; text=[[NSString alloc] initWithFormat: @"%i", total]; lblTally.text = text; } I have done the necessary interface declarations for the lblTally UILabel and the updateTally method. I suspect that there is some sort of an NSString/int/%i/%@ mixup that I am making but I'm not sure how to fix it. When I run the program as it currently is it displays a 0 in the lblTally label field on the iphone. When I press the button it then displays a 1 in that field. However, if I continue to press the button - nothing happens.

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  • 3D framework/library os x

    - by Deano
    Does anyone have any advice as to a good framework for simplifying the generation of 3D models? I am trying to construct a parametric program for tasks such as ship design. Actions such as surface modelling, intersections etc are a must. I have investigated openCASCADE and it shows promise but getting it to integrate into a native cocoa interface is not currently achievable (By me at any rate). All ideas and suggestions welcome. Should I just forget it and integrate an X11 window, if so any tutorials for doing this?

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  • FJSTransitionController setup and use in View Controller not main app delegate

    - by elliotrock
    I am trying to set up Corey Floyd's FJSTransitionController. My app uses a main view controller to manage the main view navigation. I also went through the source to fix it for ARC. Followed instructions and in my main delegate .h I have in the usual spots: FJTransitionController* mainTransitionController; @property (nonatomic,retain) FJTransitionController* mainTransitionController; delegate .m has the following @synthesize mainTransitionController And in the - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions mainTransitionController=[[FJTransitionController alloc] init]; // do I need to instantise? [self.window addSubview:mainTransitionController.view]; [mainTransitionController setViewControllerClass:[[mainViewController sendMissionsPanelViewController] class] forKey:@"missionView"]; The last line is complaining that there is no @interface for FJTransitionController? Any help please.

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  • C++ Boost bind value type

    - by aaa
    hello. I look in documentation and source code but cannot figure out how to get return value type of boost bind functor. I am trying to accomplish following: 35 template<typename T,size_t N, class F> 36 boost::array<typename F::value_type, N> make_array(T (&input)[N], F unary) { 37 boost::array<typename F::value_type, N> array; 38 std::transform(input, input + N, array.begin(), unary); 39 return array; 40 } where F can be bind functor. the above does not work because functor does not have value_type. for that matter, is there standard interface for unary/binary functor as far as return value. Thanks

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  • Can I safely bind to data on multi-threaded applications?

    - by Paul
    Hi everyone, I'm trying to solve a classic problem - I have a multi-threaded application which runs some processor-intensive calculations, with a GUI interface. Every time one of the threads has completed a task, I'd like to update a status on a table taskID | status I use DataGridView and BindingList in the following way: BindingList<Task> tasks; dataGridView.DataSource = tasks public class Task : INotifyPropertyChanged { ID{get;} Status{get;set;} } Can a background thread safely update a task's status? and changes will be seen in the correct order in the GUI? Second Question: When do I need to call to PropertyChanged? I tried running with and without the call, didn't seem to bother.. Third Question: I've seen on MSDN that dataGridView uses BindingSource as a mediator between DataGridView.DataSource and BindingList Is this really necessary?

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  • Core Data strategy using in memory cache, or no core data at all?

    - by randombits
    I have a user interface where the user can check off a bunch of items from a tableview, almost like a todo list. The items are populated from a Core Data stack. I need to be able to take all of the items they're clicking through and put them into a "temporary" shopping cart. Once they're in the shopping cart, users can go through the list and remove the items, or just submit them to a server. The thing is, the selected items are temporary just like an internet based shopping cart. It's nothing something that gets persisted once the application closes. Once the view is no longer in display, I can assume that the shopping cart is safe to discard. What's the best way to approach this? Since the user is essentially clicking on instances that map back to a Core Data entity .. should I setup a different persistence store such as in memory and add that store to my managed object context?

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  • Best way to parse XMPP-like XML streams?

    - by codethief
    I am working on a server application which receives data over a TCP socket in an XMPP-like XML format, i.e. every child of the <root> element essentially represents one separate request (stanza). The connection is closed as soon as </root> is received. I do know that I must use a stream parser like SAX, somehow. Though, for convenience, I'd prefer to have a tree-like interface to access each stanza's child elements. (The data sent with every request is not large so I think it makes sense to read each stanza as a whole.) What's the best way to realize that in Python (preferably v3)? This is the code I'd like to build it in. Feel free to point me in a totally different direction to solve this issue. import socketserver import settings class MyServer(socketserver.ThreadingMixIn, socketserver.TCPServer): pass class MyRequestHandler(socketserver.StreamRequestHandler): def handle(self): pass if __name__ == '__main__': server = MyServer((settings.host, settings.port), MyRequestHandler) server.serve_forever()

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  • WCF: How to find out when a session is ending?

    - by TomTom
    I have a WCF application that is using sessions. Is there any central event to get thrown when a session ends? How can I find out when a session is ending WITHOUT (!) calling a method (network disconnect, client crashing - so no "logout" method call)? The server is hosted as: [ServiceBehavior( InstanceContextMode = InstanceContextMode.PerSession, ConcurrencyMode = ConcurrencyMode.Reentrant, UseSynchronizationContext = false, IncludeExceptionDetailInFaults = true )] Basically because it is using a callback interface. Now, I basically need to decoubple the instance created from the backend store when the session terminates ;) Any ideas?

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  • PCI function number for SATA AHCI controller

    - by Look Alterno
    I'm debugging a second stage boot loader for a PC with SATA AHCI controller. I'm able to enumerate the PCI bus and find the hard disk. So far, so good. Now, lspci in my notebook (Dell Inspiron 1525) show me: -[0000:00]-+-1f.0 Intel Corporation 82801HEM (ICH8M) LPC Interface Controller +-1f.1 Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller +-1f.2 Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller \-1f.3 Intel Corporation 82801H (ICH8 Family) SMBus Controller My question: Is SATA AHCI Controller always function 2 in any PC? If not, how I found? I don't pretend to be general; booting my notebook will be good enough, without compromise further refinements.

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  • Lucene search on specific field name?

    - by Rachel
    I have been playing around with an installation of SOLR that indexes some data from my database. I am able to index data and query it back but I was wondering about how field name queries work. For certain fields I am able to specify their name and the search text to have the results return as expected and for other fields, when I specify their name and search text, no results are returned. q=type:book //(this will work) q=type:book AND title:"The Title" //(no results returned) In this example, type is a required field and title is not. For the example where I search by title, I can see the document in the results of the first query having the given title so I know that a document exists that matches this search. Is making a field 'required' the only way to be able to search by field name? [edit] I'm using the default installation and the 'example' folder inside of solr, editing the xml files and using the interface available through start.jar to be able to run, index and query.

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  • not inserting data into database from jsf web module connecting with ejb module..

    - by krazyk
    hello.. in my application i had taken ejbmodule and web module seprately. in ejb module there is one entity and session bean with remote interface. in web module i had taken jsf and used managed bean for calling method of session bean. and used jsf page with .jsp extension where m had put 2 textboxes and one commandbutton.which mapped to managed bean. my database table has only 2 field. bt when i run the application and entered data then click on button no operation is done.no data inserted into database table. i m nt given any error.so couldn't found any problem.. also dnt knw clear abt faces-config.xml file i had written abt managed bean into tht file.. plz guide me wht will be the actual problem?. thanks in advance.. waiting for positive reply..

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  • Retlang: What is the best way to unsubscribe from a channel?

    - by TrickyFishy
    I'm not sure what is the best way to unsubscribe from a channel when using Retlang. When you subscribe by calling ISubscriber<T>::Subscribe(...) you are returned an IUnsubscriber. This interface has no methods. Going up a level, IChannel<T> also does not have any methods. The only thing I can think of is casting an ISubscriber<T> to the concrete Channel<T> and calling its Unsubscribe() method or adding an Unsubscribe() method to ISubscriber<T>. I'm just curious if anyone knows what they had in mind before I modify the code.

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  • C# Generic List constructor gives me a MethodAccessException

    - by evilfred
    Hi, I make a list in my code like so: List<IConnection> connections = new List<IConnection>(); where IConnection is my own interface. This is in a .NET 2.0 executable. If I run the code on my machine (with lots of .Net versions installed) it works fine. If I run it on my test machine (which only has .NET 3.5 SP1 installed) then I get a MethodAccessException in the System.Collections.Generic.List constructor. Any ideas what could be going wrong?

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  • Storing task state between multiple django processes

    - by user366148
    I am building a logging-bridge between rabbitmq messages and Django application to store background task state in the database for further investigation/review, also to make it possible to re-publish tasks via the Django admin interface. I guess it's nothing fancy, just a standard Producer-Consumer pattern. Web application publishes to message queue and inserts initial task state into the database Consumer, which is a separate python process, handles the message and updates the task state depending on task output The problem is, some tasks are missing in the db and therefore never executed. I suspect it's because Consumer receives the message earlier than db commit is performed. So basically, returning from Model.save() doesn't mean the transaction has ended and the whole communication breaks. Is there any way I could fix this? Maybe some kind of post_transaction signal I could use? Thank you in advance.

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  • Creating a Dynamic calendar in Silverlight

    - by Tom
    I am attempting to create a long range calendar that dynamically loads (and unloads) event data as the user scrolls left or right through time. I'm really struggling to figure out how to lay the basic framework of the UI out and how to dynamically build the interface as the user scrolls by clicking and dragging the mouse in the view area. See the image below for a basic diagram of the intent. Each slice would have potentially multiple rectangles in it for events that occurred on that day (slice). I would like each slice to be a canvas to allow me to position those rectangles appropriately. There are a few problems that I am not yet sure how to tackle but this is the first big one that I've been mulling over for a while and can't quite wrap my head around: I know how to dynamically create controls but how would I go about adding things to one end of the scrollable content while removing things from the other depending on the way the user is scrolling? Any guidance in the right direction would be much appreciated! Thanks.

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  • Spring FactoryBean and scopes working together

    - by TTar
    I'd like to use FactoryBeans and scopes together. Specifically, I'd like the object created and returned by a FactoryBean to be placed into a specified (perhaps custom) scope. The issue is that doing the following: <bean class="x.y.z.TestFactoryBean" scope="test" /> Results in the FactoryBean itself being scoped, and has somewhat unpredictable behaviour on the object created by the factory. I understand why this is; the factory itself is a first-class spring-managed bean, and has its own lifecycle. However, I can't find a way to specify that the object returned from the factory should itself be scoped. On the other hand, this does exactly what I want (as long as TestFactoryBean does NOT implement the FactoryBean interface): <bean class="x.y.z.TestFactoryBean" name="testFactory"> <bean class="x.y.z.TestBean" factory-bean="testFactory" factory-method="getObject" scope="test" /> So the real question is, how can I make Spring behave like it does for the 2nd example above, but using real FactoryBeans?

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  • How can I pass an object as a parameter in the google app engine RPC flow?

    - by jimmartens
    I'm building a pretty basic app, and one thing I want to do is pass an object as a parameter up through the service - async - impl instead of passing up a million separate parameters. so in async, I do something like this: import shared.Profile; ... public interface ProfileServiceAsync { public void addProfile(Profile inProf, AsyncCallback<Void> async); Now, profile is a class in com. ... .shared and I have the following in my ... .gwt.xml <source path='shared'/> That being said when I try to compile I get this error. [ERROR] Errors in 'file:/D:/projects/eclipse/workspace/.../src/com/.../client/ProfileServiceAsync.java' [ERROR] Line 11: No source code is available for type shared.Profile; did you forget to inherit a required module? Any ideas on this?

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  • @property, ok in this situation?

    - by fuzzygoat
    I am still finding my feet with objective-c and was wondering if its acceptable to use @property on the two objects below. #import <UIKit/UIKit.h> #import <MapKit/MapKit.h> @interface MapViewController : UIViewController <MKMapViewDelegate, CLLocationManagerDelegate> { CLLocationManager *locationManager; IBOutlet MKMapView *googleMapView; } @property(nonatomic, retain) CLLocationManager *locationManager; @property(nonatomic, retain) MKMapView *googleMapView; @end One of my reasons for using them is so that I can use the setters in my viewDidUnload, I seem to be using @property a lot and was just wondering if the use in this situation is acceptable? -(void)viewDidUnload { [self setLocationManager:nil]; [self setGoogleMapView:nil]; [super viewDidUnload]; } much appreciated Gary

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  • Problem with DataGrid_CellFormatting event to set default value

    - by Royson
    Hi, I have created an applicationto display list of files. it also provide user interface for adding new column to a gridview. DataGridViewTextBoxColumn txtBoxColumn = new DataGridViewTextBoxColumn(); txtBoxColumn.Name = columnName; txtBoxColumn.HeaderText = columnName; g_dataGridView.Columns.Add(txtBoxColumn); User will create some custom type column therefore i am adding column directly to grid. I am also able to set its default value before adding for this i am using DataGrid_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e) { if (colIndexWithDefaultValue.Count > 0) { if (colIndexWithDefaultValue.Contains(e.ColumnIndex)) { g_dataGridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value = colIndexWithDefaultValue[e.ColumnIndex]; } } } where colIndexWithDefaultValue is list of columns with its default value. It is able to show newly created column with default value. But values are getting set for currently visible rows. To set value for all rows i have to do scrolling. So, how do i overcome this problem...

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