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Diffstat (limited to 'branches/sca-java-20080910/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/service/DefaultContributionListenerExtensionPoint.java')
-rw-r--r-- | branches/sca-java-20080910/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/service/DefaultContributionListenerExtensionPoint.java | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/branches/sca-java-20080910/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/service/DefaultContributionListenerExtensionPoint.java b/branches/sca-java-20080910/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/service/DefaultContributionListenerExtensionPoint.java deleted file mode 100644 index 1ab80e344b..0000000000 --- a/branches/sca-java-20080910/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/service/DefaultContributionListenerExtensionPoint.java +++ /dev/null @@ -1,118 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - */ - -package org.apache.tuscany.sca.contribution.service; - -import java.io.IOException; -import java.lang.reflect.Constructor; -import java.lang.reflect.InvocationTargetException; -import java.util.List; -import java.util.Set; -import java.util.concurrent.CopyOnWriteArrayList; - -import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; -import org.apache.tuscany.sca.core.ExtensionPointRegistry; -import org.apache.tuscany.sca.extensibility.ServiceDeclaration; -import org.apache.tuscany.sca.extensibility.ServiceDiscovery; - -/** - * Default implementation of a contribution listener extension point. - * - * @version $Rev$ $Date$ - */ -public class DefaultContributionListenerExtensionPoint implements ContributionListenerExtensionPoint { - - private List<ContributionListener> listeners = new CopyOnWriteArrayList<ContributionListener>(); - private boolean loadedListeners; - private ModelFactoryExtensionPoint modelFactories; - - /** - * Constructs a new DefaultContributionListenerExtensionPoint. - * - */ - public DefaultContributionListenerExtensionPoint(ModelFactoryExtensionPoint modelFactories) { - this.modelFactories = modelFactories; - } - - /** - * Constructs a new DefaultContributionListenerExtensionPoint. - * - */ - public DefaultContributionListenerExtensionPoint(ExtensionPointRegistry extensionPoints) { - this.modelFactories = extensionPoints.getExtensionPoint(ModelFactoryExtensionPoint.class); - } - - public void addContributionListener(ContributionListener listener) { - listeners.add(listener); - } - - public List<ContributionListener> getContributionListeners() { - loadListeners(); - return listeners; - } - - public void removeContributionListener(ContributionListener listener) { - listeners.remove(listener); - } - - /** - * Dynamically load listeners declared under META-INF/services - */ - @SuppressWarnings("unchecked") - private synchronized void loadListeners() { - if (loadedListeners) - return; - - // Get the listener service declarations - Set<ServiceDeclaration> listenerDeclarations; - try { - listenerDeclarations = ServiceDiscovery.getInstance().getServiceDeclarations(ContributionListener.class); - } catch (IOException e) { - throw new IllegalStateException(e); - } - - // Load and instantiate the listeners - for (ServiceDeclaration listenerDeclaration: listenerDeclarations) { - ContributionListener listener; - try { - Class<ContributionListener> listenerClass = (Class<ContributionListener>)listenerDeclaration.loadClass(); - try { - Constructor<ContributionListener> constructor = listenerClass.getConstructor(ModelFactoryExtensionPoint.class); - try { - listener = constructor.newInstance(modelFactories); - } catch (InvocationTargetException e) { - throw new IllegalArgumentException(e); - } - } catch (NoSuchMethodException e) { - listener = listenerClass.newInstance(); - } - } catch (ClassNotFoundException e) { - throw new IllegalArgumentException(e); - } catch (InstantiationException e) { - throw new IllegalArgumentException(e); - } catch (IllegalAccessException e) { - throw new IllegalArgumentException(e); - } - addContributionListener(listener); - } - - loadedListeners = true; - } - -} |