[hibernate-issues] [Hibernate-JIRA] Commented: (EJB-242) Eclipse RCP + InputStreamZippedJarVisitor problem

[Michał Kostrzewa (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/EJB-242?page=comments#action_25687 ] 

Michał Kostrzewa commented on EJB-242:
--------------------------------------

To my suprise I noticed I didn't comment this bug after I found a workaround some time ago - I lived in conciousness of having posted this, I'm terribly sorry it may have saved Wolfgang some investigations... :(

As far as I rememember the fix provided by Emmanuel didn't work for me (but I'm only 99% sure about it, since I tried it some time ago)

I solved it exactely the way Wolfgang did, actually I did it earlier so I even survived one ecplipse RCP upgrade which happily spoiled nothing. I'd also like to acknowledge that this solution works when application is exported as Java Web Start application, which is non-obvious, yet works.





> Eclipse RCP + InputStreamZippedJarVisitor problem
> -------------------------------------------------
>
>          Key: EJB-242
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-242
>      Project: Hibernate Entity Manager
>         Type: Bug

>   Components: EntityManager
>     Versions: 3.2.0.ga
>  Environment: Hibernate 3.2.0 GA, postgres (but I guess not relevant here)
>     Reporter: Michał Kostrzewa
>     Assignee: Emmanuel Bernard

>
>
> Hi, 
> Max from user list kindly redirected me to fill a bug here. Here it goes as I described it on list. I didn't attached a test case b/c doing it is non-trivial, maybe you'll just know what is the problem and I provided a patch that works for me. But if test case is needed - I'll do it.
> --------------
> I'm having problems with bundling hibernate and my ejb model in eclipse RCP application. I managed to solve all classloading problems but one, related to InputStreamZippedJarVisitor class. 
> Simplifying things I have: 
> hibernate plugin which registers itself for buddy classloading policy 
> dbmodel plugin which depends on hibernate and is a buddy of hibernate 
> application plugin which depends on hibernate and dbmodel and is a buddy of hibernate. This application plugin has hibernate.cfg.xml in self. 
> When I run this project from eclipse IDE, all is fine except the warning message in logs while creating EntityManager: 
> 2006-10-20 09:07:23 org.hibernate.ejb.packaging.InputStreamZippedJarVisitor doProcessElements 
> WARNING: Unable to find file (ignored): bundleresource://101 
> java.io.FileNotFoundException: C:\Documents and Settings\mkostrze\sv-head2\com.pentacomp.dbmodel (Access denied) 
>    at java.io.FileInputStream.open(Native Method) 
>    at java.io.FileInputStream.<init>(FileInputStream.java:106) 
>    at org.eclipse.osgi.framework.util.SecureAction.getFileInputStream(SecureAction.java:99) 
>    at org.eclipse.osgi.baseadaptor.bundlefile.FileBundleEntry.getInputStream(FileBundleEntry.java:50) 
>    at org.eclipse.osgi.framework.internal.core.BundleURLConnection.connect(BundleURLConnection.java:53) 
>    at org.eclipse.osgi.framework.internal.core.BundleURLConnection.getInputStream(BundleURLConnection.java:99) 
>    at java.net.URL.openStream(URL.java:1007) 
>    at org.hibernate.ejb.packaging.InputStreamZippedJarVisitor.doProcessElements(InputStreamZippedJarVisitor.java:33) 
>    at org.hibernate.ejb.packaging.JarVisitor.getMatchingEntries(JarVisitor.java:215) 
>    at org.hibernate.ejb.Ejb3Configuration.addMetadataFromVisitor(Ejb3Configuration.java:253) 
>    at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:229) 
>    at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:120) 
>    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:51) 
>    at com.pentacomp.dicom.viewer.ViewerContstants.createEntityManager(ViewerContstants.java:170) 
>    at com.pentacomp.dicom.viewer.DicomViewerMainFrame$InitRepositoriesTask.call(DicomViewerMainFrame.java:146) 
> I suppose hibernate tries to inspect the model jar for some reason, but in IDE this jar location is resolved to directory containing the plugin. 
> But things get worse when I export the project into java webstart application. I'm getting NullPointerException instead of warning in the same place. I investigated the source and the problem is here: 
> protected void doProcessElements() throws IOException { 
>       JarInputStream jis; 
>       try { 
>          jis = new JarInputStream( jarUrl.openStream() ); 
>       } 
>     catch (IOException ze) { 
>          log.warn( "Unable to find file (ignored): " + jarUrl, ze ); 
>          return; 
>       } 
>  
> The jarUrl is a bundleresource:// url which resolves to DirZipBundleEntry which in turn returns null in getInputStream(). Thus JarInputStream thows NPE. 
> Here's what I've tried to solve this: 
> - configure the dbmodel to be unpacked or packed after install 
> - tried dbmodel with jar inside or with unpacked classes inside 
> - set hibernate.archive.autodetection to 'none'. (I did it passing parameters map to createEntityManager method) 
> - change the hibernate sources and replace IOException with Exception in doProcessElement method. This one worked 
> I guess most likely I did something wrong to my deploy - any ideas please? But if not, perhaps such a change in code may make hibernate more robust (?) 
> Hibernate version: 3.2.0 GA 
> best regards, 
> Michal Kostrzewa

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