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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
ThreadLocalComponentAdapter.java | 0% | 0% | 0% | 0% |
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/*****************************************************************************
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* Copyright (c) PicoContainer Organization. All rights reserved. *
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* ------------------------------------------------------------------------- *
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* The software in this package is published under the terms of the BSD *
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* style license a copy of which has been included with this distribution in *
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* the LICENSE.txt file. *
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* *
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* Original code by Joerg Schaible *
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*****************************************************************************/
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package org.picocontainer.defaults;
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import java.lang.reflect.InvocationHandler;
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import java.lang.reflect.Method;
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import java.lang.reflect.Proxy;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Map;
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import org.picocontainer.ComponentAdapter;
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import org.picocontainer.PicoInitializationException;
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import org.picocontainer.PicoIntrospectionException;
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/**
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* A {@link ComponentAdapter}that realizes a {@link ThreadLocal}component
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* instance. The adapter creates proxy instances, that will create the necessary
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* instances on-the-fly invoking the methods of the instance.
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*
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* <em>
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* IMPORTANT! This class will be moved out of the PicoContainer core
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* before release of the final version!
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* </em>
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*
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* @author Jörg Schaible
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*/
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public class ThreadLocalComponentAdapter |
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extends DecoratingComponentAdapter {
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private static Map m_proxyMap = Collections.synchronizedMap(new HashMap()); |
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/**
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* Construct a ThreadLocalComponentAdapter.
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* @param delegate The {@link ComponentAdapter}to delegate.
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*/
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public ThreadLocalComponentAdapter(ComponentAdapter delegate) {
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super(new CachingComponentAdapter(delegate, new ThreadLocalReference())); |
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} |
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/**
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* @see org.picocontainer.ComponentAdapter#getComponentInstance()
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*/
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public Object getComponentInstance()
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throws PicoInitializationException, PicoIntrospectionException,
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AssignabilityRegistrationException, NotConcreteRegistrationException { |
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final Object componentKey = getDelegate().getComponentKey(); |
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final String key = String.valueOf(System.identityHashCode(componentKey)) |
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+ "."
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+ String.valueOf(System.identityHashCode(getContainer())); |
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Object proxy = m_proxyMap.get(key); |
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if (proxy == null) { |
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final Class[] interfaces; |
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if (componentKey instanceof Class && ((Class)componentKey).isInterface()) { |
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interfaces = new Class[]{(Class)getDelegate().getComponentKey()};
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} else {
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interfaces = (Class[])ClassHierarchyIntrospector.getAllInterfaces( |
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getDelegate().getComponentImplementation()).toArray(new Class[0]);
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} |
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if (interfaces.length == 0) { throw new PicoIntrospectionException( |
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"Can't proxy implementation for "
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+ getDelegate().getComponentImplementation().getName() |
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+ ". It doesn't implement any interfaces."); }
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final ThreadLocalInvocationHandler threadLocalInvocationHandler = new ThreadLocalInvocationHandler();
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proxy = Proxy.newProxyInstance( |
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getClass().getClassLoader(), interfaces, threadLocalInvocationHandler); |
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m_proxyMap.put(key, proxy); |
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} |
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return proxy;
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} |
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private class ThreadLocalInvocationHandler |
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implements InvocationHandler {
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/**
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* @see java.lang.reflect.InvocationHandler#invoke(java.lang.Object,
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* java.lang.reflect.Method, java.lang.Object[])
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*/
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public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { |
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final Object delegatedInstance = ThreadLocalComponentAdapter.this.getDelegate()
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.getComponentInstance(); |
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return method.invoke(delegatedInstance, args);
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} |
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} |
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} |
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