This is an automated email from the ASF dual-hosted git repository. rombert pushed a commit to annotated tag org.apache.sling.commons.classloader-1.2.0 in repository https://gitbox.apache.org/repos/asf/sling-org-apache-sling-commons-classloader.git
commit 275c4fdbb62b71135ce3a82671a915d9d65211a9 Author: Carsten Ziegeler <[email protected]> AuthorDate: Thu Mar 11 08:39:58 2010 +0000 SLING-1435 : After a NoClassDefError classes are still not found even if they have been installed in the meantime with Java 6 git-svn-id: https://svn.apache.org/repos/asf/sling/trunk/bundles/commons/classloader@921724 13f79535-47bb-0310-9956-ffa450edef68 --- .../sling/commons/classloader/impl/Activator.java | 16 ++++----- .../impl/DynamicClassLoaderManagerFactory.java | 39 +++++++++++++--------- .../impl/DynamicClassLoaderManagerImpl.java | 7 ---- .../classloader/impl/PackageAdminClassLoader.java | 13 +++----- 4 files changed, 36 insertions(+), 39 deletions(-) diff --git a/src/main/java/org/apache/sling/commons/classloader/impl/Activator.java b/src/main/java/org/apache/sling/commons/classloader/impl/Activator.java index 92f68ee..51af181 100644 --- a/src/main/java/org/apache/sling/commons/classloader/impl/Activator.java +++ b/src/main/java/org/apache/sling/commons/classloader/impl/Activator.java @@ -108,17 +108,15 @@ public class Activator implements SynchronousBundleListener, BundleActivator { * @see org.osgi.framework.BundleListener#bundleChanged(org.osgi.framework.BundleEvent) */ public void bundleChanged(BundleEvent event) { - final long bundleId = event.getBundle().getBundleId(); - boolean needsUpdate = this.service.isBundleUsed(bundleId); - if ( needsUpdate ) { + boolean reload = false; + if ( event.getType() == BundleEvent.RESOLVED ) { + reload = this.service.hasUnresolvedPackages(event.getBundle()); + } else if ( this.service.isBundleUsed(event.getBundle().getBundleId()) ) { + reload = true; + } + if ( reload ) { this.unregisterManagerFactory(); this.registerManagerFactory(); - } else { - // if a new bundle has been added (=resolved), we should - // clear the negative cache (see SLING-1302) - if ( event.getType() == BundleEvent.RESOLVED ) { - this.service.clearNegativeCaches(); - } } } } diff --git a/src/main/java/org/apache/sling/commons/classloader/impl/DynamicClassLoaderManagerFactory.java b/src/main/java/org/apache/sling/commons/classloader/impl/DynamicClassLoaderManagerFactory.java index 273d707..e6cd33a 100644 --- a/src/main/java/org/apache/sling/commons/classloader/impl/DynamicClassLoaderManagerFactory.java +++ b/src/main/java/org/apache/sling/commons/classloader/impl/DynamicClassLoaderManagerFactory.java @@ -16,16 +16,15 @@ */ package org.apache.sling.commons.classloader.impl; -import java.util.ArrayList; import java.util.Collections; import java.util.HashSet; -import java.util.List; import java.util.Set; import org.osgi.framework.Bundle; import org.osgi.framework.BundleContext; import org.osgi.framework.ServiceFactory; import org.osgi.framework.ServiceRegistration; +import org.osgi.service.packageadmin.ExportedPackage; import org.osgi.service.packageadmin.PackageAdmin; /** @@ -42,8 +41,7 @@ public class DynamicClassLoaderManagerFactory private final Set<Long> usedBundles = Collections.synchronizedSet(new HashSet<Long>()); - /** All created managers. */ - private final List<DynamicClassLoaderManagerImpl> managers = new ArrayList<DynamicClassLoaderManagerImpl>(); + private final Set<String> unresolvedPackages = Collections.synchronizedSet(new HashSet<String>()); /** * Create a new service instance @@ -63,9 +61,6 @@ public class DynamicClassLoaderManagerFactory final ServiceRegistration registration) { final DynamicClassLoaderManagerImpl manager = new DynamicClassLoaderManagerImpl(this.context, this.pckAdmin, new BundleProxyClassLoader(bundle), this); - synchronized ( managers ) { - managers.add(manager); - } return manager; } @@ -76,9 +71,6 @@ public class DynamicClassLoaderManagerFactory final ServiceRegistration registration, final Object service) { if ( service != null ) { - synchronized ( managers ) { - managers.remove(service); - } ((DynamicClassLoaderManagerImpl)service).deactivate(); } } @@ -102,13 +94,30 @@ public class DynamicClassLoaderManagerFactory } /** - * Clear the negative caches of all registered managers. + * Notify that a package is not found during class loading. + * @param pckName The package name. + */ + public void addUnresolvedPackage(final String pckName) { + this.unresolvedPackages.add(pckName); + } + + /** + * Check if an exported package from the bundle has not been + * found during previous class loading attempts. + * @param bundle The bundle to check + * @return <code>true</code> if a package has not be found before */ - public void clearNegativeCaches() { - synchronized ( this.managers ) { - for(final DynamicClassLoaderManagerImpl manager : this.managers) { - manager.clearNegativeCache(); + public boolean hasUnresolvedPackages(final Bundle bundle) { + if ( !this.unresolvedPackages.isEmpty() ) { + final ExportedPackage[] pcks = this.pckAdmin.getExportedPackages(bundle); + if ( pcks != null ) { + for(final ExportedPackage pck : pcks ) { + if ( this.unresolvedPackages.contains(pck.getName()) ) { + return true; + } + } } } + return false; } } diff --git a/src/main/java/org/apache/sling/commons/classloader/impl/DynamicClassLoaderManagerImpl.java b/src/main/java/org/apache/sling/commons/classloader/impl/DynamicClassLoaderManagerImpl.java index 64d720d..b03514c 100644 --- a/src/main/java/org/apache/sling/commons/classloader/impl/DynamicClassLoaderManagerImpl.java +++ b/src/main/java/org/apache/sling/commons/classloader/impl/DynamicClassLoaderManagerImpl.java @@ -70,13 +70,6 @@ public class DynamicClassLoaderManagerImpl this.facade = new ClassLoaderFacade(this); } - /** - * Clear the negative cache - */ - public void clearNegativeCache() { - this.pckAdminCL.clearNegativeCache(); - } - private synchronized void updateCache() { if ( this.trackingCount < this.getTrackingCount() ) { final ServiceReference[] refs = this.getServiceReferences(); diff --git a/src/main/java/org/apache/sling/commons/classloader/impl/PackageAdminClassLoader.java b/src/main/java/org/apache/sling/commons/classloader/impl/PackageAdminClassLoader.java index 1d8986d..0c869b7 100644 --- a/src/main/java/org/apache/sling/commons/classloader/impl/PackageAdminClassLoader.java +++ b/src/main/java/org/apache/sling/commons/classloader/impl/PackageAdminClassLoader.java @@ -61,13 +61,6 @@ class PackageAdminClassLoader extends ClassLoader { } /** - * Clear the negative cache. - */ - public void clearNegativeCache() { - negativeClassCache.clear(); - } - - /** * Find the bundle for a given package. * @param pckName The package name. * @return The bundle or <code>null</code> @@ -180,12 +173,14 @@ class PackageAdminClassLoader extends ClassLoader { try { clazz = super.loadClass(name, resolve); } catch (ClassNotFoundException cnfe) { - final Bundle bundle = this.findBundleForPackage(getPackageFromClassName(name)); + final String pckName = getPackageFromClassName(name); + final Bundle bundle = this.findBundleForPackage(pckName); if ( bundle != null ) { try { clazz = bundle.loadClass(name); } catch (ClassNotFoundException inner) { negativeClassCache.add(name); + this.factory.addUnresolvedPackage(pckName); throw inner; } this.factory.addUsedBundle(bundle); @@ -193,6 +188,8 @@ class PackageAdminClassLoader extends ClassLoader { } if ( clazz == null ) { negativeClassCache.add(name); + final String pckName = getPackageFromClassName(name); + this.factory.addUnresolvedPackage(pckName); throw new ClassNotFoundException("Class not found " + name); } this.classCache.put(name, clazz); -- To stop receiving notification emails like this one, please contact "[email protected]" <[email protected]>.
