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Making the DirectoryScanner fail
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created by <a href="https://community.jboss.org/people/jskovjyskebankdk">Jesper Skov</a> in <i>JBoss Tools</i> - <a href="https://community.jboss.org/message/787526#787526">View the full discussion</a>
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<div class="jive-rendered-content"><p>Most of our projects use a custom builder which fetches IVY dependencies and place them in various folders named build/gen-lib*.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>This builder has first priority and runs before anything else, intending to make it appear to Eclipse as if the projects had their dependencies checked out with the source (if that makes sense).</p><p>It works pretty well and has served us for years.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Part of this design requires some of the build/gen-lib folder to be mentioned in the Deployment Assembly of the project.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Unfortunately, this makes a JBoss Tools 4.0.0.Final plugin unhappy when it scans these folders which may not be created.</p><p>(I *think* the Deployment Assembly reference is where your plugin pick the reference, but I'm not sure)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The stack trace looks like this:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: courier new,courier; font-size: 8pt;">java.lang.IllegalStateException: basedir C:\udvikler\ws\plugins\jb.it.reuters\build\gen-lib-deployable is not a directory</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.jboss.ide.eclipse.archives.core.asf.DirectoryScanner.scanPrepare(DirectoryScanner.java:552)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.jboss.ide.eclipse.archives.core.asf.DirectoryScanner.scan(DirectoryScanner.java:588)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.jboss.ide.eclipse.archives.core.model.DirectoryScannerFactory.createDirectoryScanner(DirectoryScannerFactory.java:66)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.jboss.ide.eclipse.archives.webtools.filesets.vcf.WorkspaceFilesetVirtualComponent$WorkspaceFilter.<init>(WorkspaceFilesetVirtualComponent.java:100)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.jboss.ide.eclipse.archives.webtools.filesets.vcf.WorkspaceFilesetVirtualComponent.getRootFolder(WorkspaceFilesetVirtualComponent.java:53)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.wst.common.componentcore.internal.flat.FlatVirtualComponent.consumeComponent(FlatVirtualComponent.java:203)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.wst.common.componentcore.internal.flat.FlatVirtualComponent.addConsumedReferences(FlatVirtualComponent.java:196)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.jst.j2ee.internal.common.ClasspathLibraryExpander.optimize(ClasspathLibraryExpander.java:47)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.wst.common.componentcore.internal.flat.FlatVirtualComponent.cacheResources(FlatVirtualComponent.java:119)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.wst.common.componentcore.internal.flat.FlatVirtualComponent.fetchResources(FlatVirtualComponent.java:101)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.jst.j2ee.internal.common.ClasspathLibraryExpander.fetchResource(ClasspathLibraryExpander.java:74)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathContainer.getBaseEARLibRefs(J2EEComponentClasspathContainer.java:463)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathContainer.requiresUpdate(J2EEComponentClasspathContainer.java:208)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathContainer.refresh(J2EEComponentClasspathContainer.java:540)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathUpdater$ModuleUpdateJob.processModules(J2EEComponentClasspathUpdater.java:311)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathUpdater$ModuleUpdateJob.access$4(J2EEComponentClasspathUpdater.java:295)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathUpdater$ModuleUpdateJob$1.run(J2EEComponentClasspathUpdater.java:336)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathUpdater$ModuleUpdateJob.run(J2EEComponentClasspathUpdater.java:321)</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I guess I'm really the one making your plugin fail, so I will probably make our plugin create those folders earlier.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>But you may want to handle non-existent folders in your scanner differently (either silently, or maybe create a Marker describing the apparently bad configuration for the developer).</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Cheers,</p><p>Jesper</p></div>
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