Search Results

Search found 29423 results on 1177 pages for 'object'.

Page 817/1177 | < Previous Page | 813 814 815 816 817 818 819 820 821 822 823 824  | Next Page >

  • JPA, scope, and autosave?

    - by arinte
    I am using JPA and lets say I do something like this public class MoRun extends Thread {... public void run() { final EntityManagerFactory emFactory = Persistence.createEntityManagerFactory("pu"); EntityManager manager = emFactory.createEntityManager(); manager.setFlushMode(FlushModeType.COMMIT); someMethod(manager); ... } public void someMethod(EntityManager manager){ Query query = manager.createNamedQuery("byStates"); List<State> list = query.getResultList(); for (State state : list) { if(someTest) state.setValue(...) } ... } So for those objects that pass "someTest" and values are updated are those changes automatically persisted to the db even though there is no transaction and I don't explicitly "manager.save(state)" the object? I ask because it seems like it is and I was wondering if the flush is doing it?

    Read the article

  • Catch all exceptions in Scala 2.8 RC1

    - by Michel Krämer
    I have the following dummy Scala code in the file test.scala: class Transaction { def begin() {} def commit() {} def rollback() {} } object Test extends Application { def doSomething() {} val t = new Transaction() t.begin() try { doSomething() t.commit() } catch { case _ => t.rollback() } } If I compile this on Scala 2.8 RC1 with scalac -Xstrict-warnings test.scala I'll get the following warning: test.scala:16: warning: catch clause swallows everything: not advised. case _ => t.rollback() ^ one warning found So, if catch-all expressions are not advised, how am I supposed to implement such a pattern instead? And apart from that why are such expressions not advised anyhow?

    Read the article

  • Grails: JSONP callback without id and class in JSON file

    - by Klaas
    Hi, I am working on a REST based interface where people get a json file. The client needs to access the file from another Domain. I use jsonp which works so far. My problem is the rendering in Grails. At the moment I use the 'as JSON' to marshalling the object: render "${params.jsoncallback}(${user as JSON})" The Json file getting to the client inclused all attributes, incluing the id and class, which I do not want to have in there. In case it is not jsonp, I do it this way, which works great: render(contentType:'text/json'){ userName user.userName userImage user.userImage : : } So how do I get the id and class attributes out of the json when rendering "user as JSON"? Any idea? best regards, Klaas

    Read the article

  • Converting a year from 4 digit to 2 digit and back again in C#

    - by Mike Wills
    My credit card processor requires I send a two-digit year from the credit card expiration date. Here is how I a currently processing: I put a DropDownList of the 4-digit year on the page. I validate the expiration date in a DateTime field to be sure that the expiration date being passed to the CC processor isn't expired. I send a two-digit year to the CC processor (as required). I do this via a substring of the value from the year DDL. Is there a method out there to convert a four-digit year to a two-digit year. I am not seeing anything on the DateTime object. Or should I just keep processing it as I am?

    Read the article

  • Problem updating blog with hibernate?

    - by johnsmith51
    hi, i am having problem updating a blob with hibernate. my model have these getters/setters for hibernate, i.e. internally i deal with byte[] so any getter/setter convert the byte[] to blog. I can create an initial object without problem, but if I try to change the content of the blob, the database column is not updated. I do not get any error message, everything looks fine, except that the database is not updated. /** do not use, for hibernate only */ public Blob getLogoBinaryBlob() { if(logoBinary == null){ return null; } return Hibernate.createBlob(logoBinary); } /** do not use, for hibernate only */ public void setLogoBinaryBlob(Blob logoBinaryBlob) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); try { logoBinary = toByteArrayImpl(logoBinaryBlob, baos); } catch (Exception e) { } }

    Read the article

  • __getattr__ on a module

    - by Matt Joiner
    How can implement the equivalent of a __getattr__ on a class, on a module? Example When calling a function that does not exist in a module's statically defined attributes, I wish to create an instance of a class in that module, and invoke the method on it with the same name as failed in the attribute lookup on the module. class A(object): def salutation(self, accusative): print "hello", accusative def __getattr__(mod, name): return getattr(A(), name) if __name__ == "__main__": salutation("world") Which gives: matt@stanley:~/Desktop$ python getattrmod.py Traceback (most recent call last): File "getattrmod.py", line 9, in <module> salutation("world") NameError: name 'salutation' is not defined Evidently something is not right about my assumed implementation.

    Read the article

  • Check if hydrated doctrine result is NULL

    - by iggnition
    Hi, I'm trying to check if a result in my DQL is NULL. I got the following DQL query: $q = self::createQuery("l") ->select('i.*, s.aantal, m.naam, c.cat_naam, a.app_id') ->from('InstalledBase i, i.Spare s, i.Apparaat a, a.Categorie c, a.Merk m') ->execute(); return $q; Now i want to check if the s.aantal is NULL so i do: if(is_null($installedbase->Spare->spare_id)) when the variable is NOT null everything works, but when it is actually NULL i get a E notice message: Notice: Trying to get property of non-object in \installedbase\templates\_index.php on line 29 It does see that it is null though because the if condition is executed. Weird thing is i'm doing the exact same thing on another page where it works no problem. But i must be doing something wrong or stupid since those messages generally don't show for nothing. So can anybody explain this to me? :)

    Read the article

  • Error loading Variables stage.loaderInfo - AS3

    - by Dimitree
    I have a Document class that loads variables from Facebook with the use of stage.loaderInfo var connect:FacebookConnectObject = new FacebookConnectObject( facebook, API_KEY, this.stage.loaderInfo ); But when I change the Document class (with another one responsible for the layout of my app), and try call the above from a movieclip that exists in my application with the use: var facebook_class:FacebookAp = new FaceBppkApp addChild(facebook_class) I get error TypeError: Error #1009: Cannot access a property or method of a null object reference. I believe the error comes fro this line this.stage.loaderInfo since I changed the scope... How I am supposed to fix that?

    Read the article

  • Alternative to COM blind aggregation in .NET for class with private interface

    - by Philip
    When extending a COM class in unmanaged C++ where the original class has private interfaces, one way to do this is through the concept of blind aggregation. The idea is that any interface not explicitly implemented on the outer aggregating class is 'blindly' forwarded to the inner aggregated class. Now .NET as far as I can figure out does not support COM aggregation natively. A somewhat tedious workaround is to create a .NET class where you implement all the required COM interfaces directly on the .NET class and simply forward to an instance of the actual COM class for any methods you don't want to override. The problem I have is when the original COM object has one or more private interfaces, i.e. undocumented interfaces that are nonetheless used by some consumers of the original class. Using blind aggregation in unmanaged C++ this is a non-issue as the calls to the private interfaces are automatically forwarded to the original class, however I can't find any way of doing the same thing in .NET. Are there any other ways of accomplishing this with .NET?

    Read the article

  • JAXB, marshalling sub-class that has the same rootNode name as the superclass

    - by SCdF
    Let's say I have this: public class Foo { private String value; // <snip> getters and setters, constructors etc } And I also have this: public class Bar extends Foo { private String anotherValue; // <snip> getters and setters, constructors etc } I want to be able to marshall this to a Bar object: <foo> <value>smang</value> <anotherValue>wratz</anotherValue> </foo> I'm not in a position to check right now, but if I change the @XmlRootNode name of Bar to 'foo' will that work? Do I have to do anything more clever than that?

    Read the article

  • What is the proper way to resolve this Eclipse warning?

    - by Morinar
    I'm trying to clean up some warnings in some old Java code (in Eclipse), and I'm unsure what the proper thing to do is in this case. The block looks more or less like this: java.util.List clipboardFileList = null; if( content.isDataFlavorSupported( DataFlavor.javaFileListFlavor ) ) { try { clipboardFileList = (java.util.List)content.getTransferData( DataFlavor.javaFileListFlavor); } /* Do other crap, etc. */ } The List generates a warning as it isn't parameterized, however, if I parameterize it with <File>, which I'm pretty sure is what it requires, it complains that it can't convert from Object to List<File>. I could merely suppress the unchecked warning for the function, but would prefer to avoid that if there is a "good" solution. Thoughts?

    Read the article

  • SelectedValue of DropDownList is not the one I selected when Enabled=false

    - by anD666
    Hiya, I have a few DropDownLists on a webform each pointing to a SqlDataSource. Some of these datasources use one of these DropDownLists for a select parameter, filtering the list to specific categories. For certain users two of these DropDownLists are to be automatically set and disabled. When I submit the form with the drop downs enabled it works fine but when they are disabled the SelectedValue of the DropDownList is being reset to the first one in the list. My DropDownLists are constructed as follows: <asp:DropDownList ID="ddlManager" runat="server" DataSourceID="dsManagers" EnableViewState="false" DataValueField="ManagerID" DataTextField="MgrName" AppendDataBoundItems="false" ondatabound="ddlManager_DataBound" > The drop down lists add an extra item on the data bound event as follows: protected void ddlManager_DataBound(object sender, EventArgs e) { this.ddlManager.Items.Insert(0, new ListItem("--Manager--", "--Manager--")); } Can anyone shed any light as to why this is happening? Thanks Andy

    Read the article

  • Making large toolbars like the iPod app

    - by andybee
    I am trying to create a toolbar programatically (rather than via IB) very similar to the toolbar featured in the iPhone app. Currently I've been experimenting with the UIToolbar class, but I'm not sure how (and if?) you can make the toolbar buttons centrally aligned and large like that in the iPod app. Additionally, regardless of size, the gradient/reflection artwork never correctly respects the size and is stuck as if the object is the default smaller size. If this cannot be done with a standard UIToolbar, I guess I need to create my own view. In this case, can the reflection/gradient be created programmatically or will it require some clever alpha tranparency Photoshopped artwork?

    Read the article

  • Update gridview from code behind in asp.net

    - by Zerotoinfinite
    Hi Experts, I have gridview in my asp.net 3.5 application [C#]. Which looks like this: AutoGenerateDeleteButton="true" DataKeyNames="studentId" runat="server" OnRowEditing="GridView1_RowEditing" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowDeleting="GridView1_RowDeleting" OnRowUpdating="GridView1_RowUpdating" onpageindexchanging="GridView1_PageIndexChanging" onrowupdated="GridView1_RowUpdated" <EmptyDataTemplate> <asp:Label ID="lblNoRecord" runat="server" Text="No Record Found" ForeColor="Red"></asp:Label> </EmptyDataTemplate> </asp:GridView> Now, In rowUpdating event, I am writing the below code: protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { int mytext = Convert.ToInt16(GridView1.Rows[e.RowIndex].Cells[1].Text); string cConatiner = GridView1.Rows[e.RowIndex].Cells[4].Text; } In this, myText is giving me the correct value, i.e. of the 1st column but when I am changing the cell value to 1,2,3,4,5,6 I am getting empty. Am I doing it incorrectly ? Please help me. Thanks in advance.

    Read the article

  • How can I check if a particular jQuery UI function is available and use a different function if it i

    - by Mark B
    I'm writing a jQuery plugin and I would like my code to take advantage of the jQuery UI show(effect, [options], [speed], [callback]) and hide(effect, [options], [speed], [callback]) functions, which allow you to show and hide elements with a nice animation. However, I'd also like my plugin to degrade gracefully if jQuery UI isn't available, switching back to use the basic, non-animating show() and hide() functions present in the standard jQuery API. I'll need to test for the show and hide functions specifically, as even if jQuery UI is available it could potentially be a custom version, without the Effects components included. At first I thought that I might be able to do something like: if(typeof myelement.show('blind', 'slow') == 'undefined') { myelement.show('blind', 'slow'); } else { myelement.show(); } But of course this doesn't work, as even if UI isn't present, show() is still a function, it just has a different signature—so typeof returns object in either case. So, what's the best way for me to check if jQuery UI is available to my plugin? Any help is much appreciated!

    Read the article

  • How to properly use CoreData validation & error framework ?

    - by Xav
    I've created a model in Xcode, and for various attributes I have minimum & maximum values defined and that are enforced by coreData at runtime. I'm using NSManagedObject validateValue:forKey:error to check for user input values. I was a bit disappointed to see that the localized error message is not specific, and I get a "The operation couldn't be completed. (Cocoa error 1620)" for too small values and a "The operation couldn't be completed. (Cocoa error 1610)" for too large values. It's written in the coreData documentation that "you can localize most aspects of a managed object model, including entity and property names and error messages". Unfortunately it's not very detailed on how you implement it for error messages. So How do you customize error message ? How do you localize them ? Is it possible to customize it in a way where it will mentioned the reference value ex: "Value should be lower than %@" or "Value should be higher than %@" ?

    Read the article

  • Kind of stumped with some basic C# constructors.

    - by Sergio Tapia
    public class Parser { Downloader download = new Downloader(); HtmlDocument Page; public Parser(string MovieTitle) { Page = download.FindMovie(MovieTitle); } public Parser(string ActorName) { Page = download.FindActor(ActorName); } } I want to create a constructor that will allow other developers who use this library to easily create a Parser object with the relevant HtmlDocument already loaded as soon as it's done creating it. The problem lies in that a constructor cannot exist twice with the same type of parameters. Sure I can tell the logical difference between the two paramters, but the computer can't. Any suggestions on how to handle this? Thank you!

    Read the article

  • Manipulating pixels using only toDataURL

    - by Chris
    The problem I have is this: I need to be able to dynamically tint an image using Javascript, but I cannot access pixel data via the canvas. I can, however, store the dataURL (or any other text-based data format) and include that with the code, manipulate that data, and then create an image object using that dataURL. My question is, how can I access the RGBA value of each pixel, given only the dataURL. I assume I need to decode the base64 url, but into what format in order to manipulate on the pixel level? And then would be it be as trivial as re-encoding it as base64, slapping it in a url, and the passing to an image? Thanks.

    Read the article

  • Return/consume dynamic anonymous type across assembly boundaries

    - by friism
    The code below works great. If the Get and Use methods are in different assemblies, the code fails with a RuntimeBinderException. This is because the .Net runtime system only guarantees commonality of anonymous types (<string, int> in this case) within assemblies. Is there any way to fool the runtime system to overcome this? I can expect the object in the debugger on the Use side, and the debugger can see the relevant properties. class Program { static void Main(string[] args) { UsePerson(); Console.ReadLine(); } public static void UsePerson() { var person = GetPerson(); Console.WriteLine(person.Name); } public static dynamic GetPerson() { return new { Name = "Foo", Age = 30 }; } }

    Read the article

  • How do I create a MessageBox in C# ?

    - by Nick Stinemates
    I have just installed C# for the first time, and at first glance it appears to be very similar to VB6. I decided to start off by trying to make a 'Hello, World!' UI Edition. I started in the Form Designer and made a button named "Click Me!" proceeded to double-click it and typed in MessageBox("Hello, World!"); I received the following error: MessageBox is a 'type' but used as a 'variable' Fair enough, it seems in C# MessageBox is an Object. I tried the following MessageBox a = new MessageBox("Hello, World!"); I received the following error: MessageBox does not contain a constructor that takes '1' arguments Now I am stumped. Please help.

    Read the article

  • How to get netstream bytesLoaded and bytesTotal from streaming .mp4?

    - by Amy
    I have a flex 3 app that uses netstream and a video object to stream .mp4 movies. I want to use the bytesLoaded and bytesTotal properties of the netstream to display the buffering information. I would also like to get any information about the number of frames that are dropped if possible. When I've tested on .flv I'm able to get the information without a problem, but it doesn't seem to work on .mp4. Is it possible to get this information streaming .mp4? Is there some configuration that I'm missing to make things work the same for .mp4 as .flv? Thanks!

    Read the article

  • stopping android handler loop

    - by venka reddy
    Hi, i am using a class which extends Handler class to update my activity UI. The code is as follows in side main activity, /////////////////////////////// public class RefreshHandler extends Handler { public void handleMessage(Message msg) { Homeform.this.updateUI(); } public void sleep(long delayMillis) { this.removeMessages(0); sendMessageDelayed(obtainMessage(0), delayMillis); } }; private void updateUI(){ Log.v("","== I am inside Update UUI====================="); refresh(); mRedrawHandler.sleep(5000); } /////////////////////////// And i had call this method handleMessage() on the object of RefreshHandler as follows /////////////////////////////////////////// mRedrawHandler = new RefreshHandler(); mRedrawHandler.handleMessage(new Message()); //////////////////////////////////////////////// But here i am facing one problem that is it is running after closing my application also . please solve my problem to stop this handler when close this application. ThanQ.....

    Read the article

  • Python: How do I create a reference to a reference?

    - by KCArpe
    Hi, I am traditionally a Perl and C++ programmer, so apologies in advance if I am misunderstanding something trivial about Python! I would like to create a reference to a reference. Huh? Ok. All objects in Python are actually references to the real object. So, how do I create a reference to this reference? Why do I need/want this? I am overriding sys.stdout and sys.stderr to create a logging library. I would like a (second-level) reference to sys.stdout. If I could create a reference to a reference, then I could create a generic logger class where the init function receives a reference to a file handle reference that will be overrided, e.g., sys.stdout or sys.stderr. Currently, I must hard-code both values. Cheers, Kevin

    Read the article

  • How to do client callback for each item in a foreach statement using c#?

    - by Mike108
    I want to show each item Id that is doing now dynamically in a foreach statement. How to do some kind of client callback to show the item Id in a foreach statement? <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" /> . protected void Button1_Click(object sender, EventArgs e) { List<int> list = new List<int>() { 1,2,3,4,5 }; foreach (var item in list) { Label1.Text = string.Format("I'm doing item {0} now.", item.ToString()); Page.RegisterStartupScript("", string.Format("<script>alert('doing item {0} now')</script>", item.ToString())); Thread.Sleep(1 * 1000); } }

    Read the article

  • What is lifetime of lambda-derived implicit functors in C++ ?

    - by Fyodor Soikin
    The question is simple: what is lifetime of that functor object that is automatically generated for me by the C++ compiler when I write a lambda-expression? I did a quick search, but couldn't find a satisfactory answer. In particular, if I pass the lambda somewhere, and it gets remembered there, and then I go out of scope, what's going to happen once my lambda is called later and tries to access my stack-allocated, but no longer alive, captured variables? Or does the compiler prevent such situation in some way? Or what?

    Read the article

< Previous Page | 813 814 815 816 817 818 819 820 821 822 823 824  | Next Page >