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/*
* 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.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.WeakHashMap;
import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException;
import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceContract;
import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
import org.apache.tuscany.sca.interfacedef.java.JavaOperation;
import org.apache.tuscany.sca.interfacedef.java.introspect.JavaInterfaceVisitor;
import org.oasisopen.sca.ServiceRuntimeException;
/**
* A factory for the Java model.
*
* @version $Rev$ $Date$
*/
public abstract class JavaInterfaceFactoryImpl implements JavaInterfaceFactory {
private List<JavaInterfaceVisitor> visitors = new ArrayList<JavaInterfaceVisitor>();
private JavaInterfaceIntrospectorImpl introspector;
private Map<Class<?>, JavaInterface> normalCache = Collections.synchronizedMap(new WeakHashMap<Class<?>, JavaInterface>());
private Map<Class<?>, JavaInterface> forceRemotableCache = Collections.synchronizedMap(new WeakHashMap<Class<?>, JavaInterface>());
public JavaInterfaceFactoryImpl() {
introspector = new JavaInterfaceIntrospectorImpl(this);
}
public JavaInterface createJavaInterface() {
return new JavaInterfaceImpl();
}
public JavaInterface createJavaInterface(Class<?> interfaceClass) throws InvalidInterfaceException {
return createJavaInterface(interfaceClass, false);
}
/**
* Creates a new Java interface model from an interface class.
*
* The forceRemotable argument allows the caller to force the interface to be remotable.
* The ServiceProcessor and ReferenceProcessor introspectors use this argument to
* propagate a @Remotable annotation on an implementation class, field, or setter method
* to the corresponding service or reference interface. The remotable flag must be set
* on the interface model prior to instrospection since some introspectors build
* different models for remotable vs local interfaces. This also means separate caches
* must be kept for interfaces that are processed normally vs. those forced to be remotable.
*/
public JavaInterface createJavaInterface(Class<?> interfaceClass, boolean forceRemotable) throws InvalidInterfaceException {
// TODO: Review if the sharing of JavaInterface is ok
synchronized (interfaceClass) {
Map<Class<?>, JavaInterface> cache = (forceRemotable ? forceRemotableCache : normalCache);
JavaInterface javaInterface = cache.get(interfaceClass);
if (javaInterface == null) {
javaInterface = createJavaInterface();
if (forceRemotable) {
javaInterface.setRemotable(true);
}
introspector.introspectInterface(javaInterface, interfaceClass);
// Now that all introspection is complete we can mark the interface resolved
javaInterface.setUnresolved(false);
cache.put(interfaceClass, javaInterface);
}
return javaInterface;
}
}
public void createJavaInterface(JavaInterface javaInterface, Class<?> interfaceClass) throws InvalidInterfaceException {
introspector.introspectInterface(javaInterface, interfaceClass);
}
public JavaInterfaceContract createJavaInterfaceContract() {
return new JavaInterfaceContractImpl();
}
public void addInterfaceVisitor(JavaInterfaceVisitor extension) {
visitors.add(extension);
}
public void removeInterfaceVisitor(JavaInterfaceVisitor extension) {
visitors.remove(extension);
}
public List<JavaInterfaceVisitor> getInterfaceVisitors() {
return visitors;
}
public JavaOperation createJavaOperation(Method method) {
JavaOperation op = new JavaOperationImpl();
op.setJavaMethod(method);
op.setName(method.getName());
return op;
}
/**
* Removes all the cached information relating to a contribution. The
* contribution is identified by the contribution classloader passed in
* as a parameter. This is used when a contribution is removed from
* the runtime.
*
* @param contributionClassloader
*/
public void removeInterfacesForContribution(ClassLoader contributionClassloader){
removeInterfacesFromCache(contributionClassloader, normalCache);
removeInterfacesFromCache(contributionClassloader, forceRemotableCache);
}
private void removeInterfacesFromCache(ClassLoader contributionClassloader, Map<Class<?>, JavaInterface> cache){
try {
synchronized(cache) {
Set<Class<?>> clsSet = cache.keySet();
Iterator<Class<?>> i = clsSet.iterator();
while (i.hasNext()) {
Class<?> cls = i.next();
if (cls.getClassLoader() == contributionClassloader) {
i.remove();
}
}
}
} catch(Exception e) {
throw new ServiceRuntimeException(e);
}
}
/**
* For testing so we can check that the cache is being cleared
*/
public Map<Class<?>, JavaInterface> getNormalCache(){
return normalCache;
}
/**
* For testing so we can check that the cache is being cleared
*/
public Map<Class<?>, JavaInterface> getForceRemotableCache(){
return forceRemotableCache;
}
}
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