Re: Problems with Eclipse Oxygen and GWT Plugin
Hello Juan, thanks for your reply. Unfortunately I had this version installed already. Perhapy you have another hint? Kind regards, JP Am Freitag, 7. Juli 2017 15:23:15 UTC+2 schrieb Juan Pablo Gardella: > > I'm using https://github.com/gwt-plugins/gwt-eclipse-plugin without > problems. Try with this. > > > > On Fri, 7 Jul 2017 at 06:30 JP <isj...@gmail.com > wrote: > >> Hello, >> >> I have installed Eclipse Oxygen Release Java EE IDE for Web Developers >> (64 bit) and found GWT Eclipse Plugin 3.0.0 in the Marketplace. >> >> After successfully installation of the plugin, I tried to create a new >> GWT Web Application Project *without *sampe code. The result was an >> error "Creation of element failed". >> >> I tried another project creation, this time *with* sample code. It >> worked! However, when I tried to add a GWT module, I got another error >> (extract from log file): >> >> !MESSAGE Problems occurred when invoking code from plug-in: >> "org.eclipse.jface". >> !STACK 0 >> java.lang.ClassCastException: org.eclipse.jdt.internal.core.JarEntryFile >> cannot be cast to org.eclipse.core.resources.IFile >> at >> com.google.gwt.eclipse.core.modules.AbstractModule.getShortName(AbstractModule.java:294) >> at >> com.google.gwt.eclipse.core.modules.AbstractModule.getQualifiedName(AbstractModule.java:272) >> at >> com.google.gwt.eclipse.core.modules.ModuleJarResource.getQualifiedName(ModuleJarResource.java:1) >> at >> com.google.gwt.eclipse.core.modules.AbstractModule.getSimpleName(AbstractModule.java:342) >> at >> com.google.gwt.eclipse.core.modules.ModuleJarResource.getSimpleName(ModuleJarResource.java:1) >> at >> com.google.gwt.eclipse.core.modules.ModuleUtils$3.visit(ModuleUtils.java:220) >> at >> com.google.gwt.eclipse.core.modules.ModuleUtils$3.visit(ModuleUtils.java:1) >> ... >> >> How can I create a module? Is there a way around this error? >> >> Kind regards, >> >> JP >> >> -- >> You received this message because you are subscribed to the Google Groups >> "GWT Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to google-web-toolkit+unsubscr...@googlegroups.com . >> To post to this group, send email to google-we...@googlegroups.com >> . >> Visit this group at https://groups.google.com/group/google-web-toolkit. >> For more options, visit https://groups.google.com/d/optout. >> > -- You received this message because you are subscribed to the Google Groups "GWT Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscr...@googlegroups.com. To post to this group, send email to google-web-toolkit@googlegroups.com. Visit this group at https://groups.google.com/group/google-web-toolkit. For more options, visit https://groups.google.com/d/optout.
Problems with Eclipse Oxygen and GWT Plugin
Hello, I have installed Eclipse Oxygen Release Java EE IDE for Web Developers (64 bit) and found GWT Eclipse Plugin 3.0.0 in the Marketplace. After successfully installation of the plugin, I tried to create a new GWT Web Application Project *without *sampe code. The result was an error "Creation of element failed". I tried another project creation, this time *with* sample code. It worked! However, when I tried to add a GWT module, I got another error (extract from log file): !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface". !STACK 0 java.lang.ClassCastException: org.eclipse.jdt.internal.core.JarEntryFile cannot be cast to org.eclipse.core.resources.IFile at com.google.gwt.eclipse.core.modules.AbstractModule.getShortName(AbstractModule.java:294) at com.google.gwt.eclipse.core.modules.AbstractModule.getQualifiedName(AbstractModule.java:272) at com.google.gwt.eclipse.core.modules.ModuleJarResource.getQualifiedName(ModuleJarResource.java:1) at com.google.gwt.eclipse.core.modules.AbstractModule.getSimpleName(AbstractModule.java:342) at com.google.gwt.eclipse.core.modules.ModuleJarResource.getSimpleName(ModuleJarResource.java:1) at com.google.gwt.eclipse.core.modules.ModuleUtils$3.visit(ModuleUtils.java:220) at com.google.gwt.eclipse.core.modules.ModuleUtils$3.visit(ModuleUtils.java:1) ... How can I create a module? Is there a way around this error? Kind regards, JP -- You received this message because you are subscribed to the Google Groups "GWT Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscr...@googlegroups.com. To post to this group, send email to google-web-toolkit@googlegroups.com. Visit this group at https://groups.google.com/group/google-web-toolkit. For more options, visit https://groups.google.com/d/optout.
How do I Serialize JDO Enhanced Classes for RPC?
I've googled and tried for hours, but I can't find anything to back up the fact that you can have a JDO enhanced class and pass it through RPC other than this line in the GWT docs: ... previous versions of GWT were unable to perform RPC on enhanced classes. As of GWT version 2.0, some common forms of persistence are now handled by the GWT RPC mechanism. http://code.google.com/webtoolkit/doc/latest/DevGuideServerCommunication.html#DevGuideSerializableTypes How do I actually do it? My code fullfills the checklist in that doc. I had a working class that I sent through RPC, and I had a working class that I stored in the GAE Datastore, but if I try to combine them and use that class for both functions I just get this runtime error for my client-side uses: [DEBUG] [...] - Validating newly compiled units [ERROR] [...] - Errors in 'file:/.../client/GameService.java' [ERROR] [...] - Line 12: No source code is available for type server.GameDatastore; did you forget to inherit a required module? I've tried moving GameDatastore around to /client and /shared to see if that's what GWT is missing, but I get the same message. This is the class: @PersistenceCapable(identityType = IdentityType.APPLICATION, detachable = true) public class GameDatastore implements IsSerializable @PrimaryKey @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) private Key key; @Persistent private String title; // Etc... Any ideas on how to get it to work? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: How do I Serialize JDO Enhanced Classes for RPC?
Solved it myself. I'll write it here for reference. I'll assume
you've successfully written a Datastored object in JDO and sent some other
object through RPC before.
First, make sure to follow the weakest links. In my case, RPC/GWT couldn't
handle the URL-class objects and JDO/GAE couldn't handle the Date-class
objects. So change them into some equivalent for storing. I used string and
long, respectively. Like so:
@Persistent public String linkUrl; @Persistent public long releaseDate;
Second, this relates to the first: make sure your (Primary) Key object is
serializable for RPC. I used a long instead of the Key-class. Like so:
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Long key;
Third, if you want to keep it somewhere shared then you can use the /shared
package. Make sure to add it to your *.gwt.xml-file. When you do that the
implicitly defined source path=client/ will dissapear so you have to
explicitly define it yourself. Like so:
source path='client'/
source path='shared'/
Fourth, the JDO annotation @PersistanceCapable needs to set identityType to
Application and detachable to true. Not sure why the Application part is
needed, maybe someone can elaborate? I did it like this:
@PersistenceCapable(identityType = IdentityType.APPLICATION,
detachable=true)
public class GameData
Fifth, ties with the fourth and is the obvious implementation of
IsSerializable for RPC. Like so:
public class GameData implements IsSerializable {
For your copy-paste convenience this is my whole file:
package net.seriema.calendar.game.shared;
import javax.jdo.annotations.IdGeneratorStrategy;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.Persistent;
import javax.jdo.annotations.PrimaryKey;
import javax.jdo.annotations.IdentityType;
import com.google.gwt.user.client.rpc.IsSerializable;
@PersistenceCapable(identityType = IdentityType.APPLICATION,
detachable=true)
public class GameData implements IsSerializable {
@SuppressWarnings(unused)
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Long key;
@Persistent public String title;
@Persistent public String linkUrl;
@Persistent public long releaseDate;
}
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Re: How do I Serialize JDO Enhanced Classes for RPC?
Thanks, you are correct. They Key was killing me, but once I fixed that I found new problems. I've detailed what I did below. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Live scores client / JMS Consumer
Hi guys, I have created an application for broadcasting live scores from a few sports games. Right now this application consists of a Flash client and a BlazeDS server. The BlazeDS server is more or less a Java Message Server. This sort of works... but I am not that satisfied with it. The Flash clients keep loosing the connection. These clients can run for a whole day in some cases. Some are blown up on big screens etc. So I am looking for another way of doing this, and I was thinking that AJAX might be the way to go, but I am not sure about AJAX support for push?!? It is emperative that the client can support push from either a JMS (Java Message Server) or MSMQ (Microsoft Message Queuing). I do not want the clients to poll the server constantly, and result in more or less a DDOS on my own server. Is this scenario possible using AJAX? Can anyone point towards a suitable blog entry or howto? Thanks, Jay Pete -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
I need to test the onError method of RequestCallback
Hi all , In gwt test case I have to make an an ajax call using RequestBuilder , Need to test the onError method on RequestCallback is executed or not if we provide a wrong URL, I tried setting the status or response, tried many ways the onError method is not executed Please help me thanks JP -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Problem with GWT.create()
I'm having a problem with GWT.create() which I suspect has more to do with my understanding thanGWT.create() I'm using two different libraries that generate handlers for classes. Library A: InterfaceForLibraryAPerson liba = GWT.create(Person.class); // Person implements MarkerA Library B: InterfaceForLibraryBPerson libb = GWT.create(Person.class); // Person also implements MarkerB I'm actually using these two lines in code, but the first one is giving me a ClassCastException (it's actually returning an InterfaceForLibraryB). I'm not actually surprised. My very limited understanding of GWT tells me that their respective generators both generate code and unfortunately, B is winning out on A. Is this behaviour normal ? Would there be a way to get around this problem ? I have source for both libraries, so I might be able to fix this). -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
