From 12bcceffb26ab805a7b0686daf21dbfb7f5a12be Mon Sep 17 00:00:00 2001 From: scottkurz Date: Wed, 20 May 2009 18:34:20 +0000 Subject: Add cached impl for TUSCANY-3054. git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@776802 13f79535-47bb-0310-9956-ffa450edef68 --- .../impl/ClassCachedJavaInterfaceFactoryImpl.java | 129 +++++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 branches/sca-java-1.x/modules/interface-java/src/main/java/org/apache/tuscany/sca/interfacedef/java/impl/ClassCachedJavaInterfaceFactoryImpl.java (limited to 'branches/sca-java-1.x/modules') diff --git a/branches/sca-java-1.x/modules/interface-java/src/main/java/org/apache/tuscany/sca/interfacedef/java/impl/ClassCachedJavaInterfaceFactoryImpl.java b/branches/sca-java-1.x/modules/interface-java/src/main/java/org/apache/tuscany/sca/interfacedef/java/impl/ClassCachedJavaInterfaceFactoryImpl.java new file mode 100644 index 0000000000..bb085c9cf9 --- /dev/null +++ b/branches/sca-java-1.x/modules/interface-java/src/main/java/org/apache/tuscany/sca/interfacedef/java/impl/ClassCachedJavaInterfaceFactoryImpl.java @@ -0,0 +1,129 @@ +/* + * 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.interfacedef.java.impl; + +import java.io.IOException; +import java.util.Map; +import java.util.WeakHashMap; +import java.util.List; +import java.util.Set; + +import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; +import org.apache.tuscany.sca.extensibility.ServiceDeclaration; +import org.apache.tuscany.sca.extensibility.ServiceDiscovery; +import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException; +import org.apache.tuscany.sca.interfacedef.java.JavaInterface; +import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory; +import org.apache.tuscany.sca.interfacedef.java.impl.JavaInterfaceFactoryImpl; +import org.apache.tuscany.sca.interfacedef.java.impl.PolicyJavaInterfaceVisitor; +import org.apache.tuscany.sca.interfacedef.java.introspect.JavaInterfaceVisitor; +import org.apache.tuscany.sca.policy.PolicyFactory; + +/** + * A factory for the Java interface model, using Class object as key to cache JavaInterface + * + * @version $Rev$ $Date$ + */ +public class ClassCachedJavaInterfaceFactoryImpl extends JavaInterfaceFactoryImpl implements JavaInterfaceFactory { + + private ModelFactoryExtensionPoint modelFactoryExtensionPoint; + private boolean loadedVisitors; + + private static Cache cache = new Cache(); + + public ClassCachedJavaInterfaceFactoryImpl () { + } + + public ClassCachedJavaInterfaceFactoryImpl(ModelFactoryExtensionPoint modelFactoryExtensionPoint) { + this.modelFactoryExtensionPoint = modelFactoryExtensionPoint; + } + + @Override + public List getInterfaceVisitors() { + loadVisitors(); + return super.getInterfaceVisitors(); + } + + /** + * Load visitors declared under META-INF/services + */ + @SuppressWarnings("unchecked") + private synchronized void loadVisitors() { + if (loadedVisitors) + return; + + if (modelFactoryExtensionPoint != null) { + PolicyFactory policyFactory = modelFactoryExtensionPoint.getFactory(PolicyFactory.class); + if (policyFactory != null) { + addInterfaceVisitor(new PolicyJavaInterfaceVisitor(policyFactory)); + } + } + + // Get the databinding service declarations + Set visitorDeclarations; + try { + visitorDeclarations = ServiceDiscovery.getInstance().getServiceDeclarations(JavaInterfaceVisitor.class); + } catch (IOException e) { + throw new IllegalStateException(e); + } + + // Load data bindings + for (ServiceDeclaration visitorDeclaration: visitorDeclarations) { + JavaInterfaceVisitor visitor; + try { + Class visitorClass = (Class)visitorDeclaration.loadClass(); + visitor = visitorClass.newInstance(); + } catch (ClassNotFoundException e) { + throw new IllegalArgumentException(e); + } catch (InstantiationException e) { + throw new IllegalArgumentException(e); + } catch (IllegalAccessException e) { + throw new IllegalArgumentException(e); + } + addInterfaceVisitor(visitor); + } + + loadedVisitors = true; + } + + public JavaInterface createJavaInterface(Class interfaceClass) throws InvalidInterfaceException { + + JavaInterface javaInterface = cache.get(interfaceClass); + if (javaInterface == null) { + javaInterface = super.createJavaInterface(interfaceClass); + cache.put(interfaceClass, javaInterface); + } + + return javaInterface; + } + + private static class Cache { + + private Map _cache = new WeakHashMap(); + + public synchronized JavaInterface get(Class interfaceClass) { + return _cache.get(interfaceClass); + } + + public synchronized void put(Class interfaceClass, JavaInterface javaInterface) { + _cache.put(interfaceClass, javaInterface); + } + } + +} -- cgit v1.2.3