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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed 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.container.java.assembly.impl;
import java.net.URL;
import org.apache.tuscany.container.java.assembly.JavaAssemblyFactory;
import org.apache.tuscany.container.java.assembly.JavaImplementation;
import org.apache.tuscany.core.config.impl.Java5ComponentTypeIntrospector;
import org.apache.tuscany.core.config.ComponentTypeIntrospector;
import org.apache.tuscany.core.config.ConfigurationException;
import org.apache.tuscany.core.config.JavaIntrospectionHelper;
import org.apache.tuscany.model.assembly.AssemblyModelContext;
import org.apache.tuscany.model.assembly.ComponentType;
import org.apache.tuscany.model.assembly.impl.ComponentImplementationImpl;
/**
* An implementation of JavaImplementation.
*/
public class JavaImplementationImpl extends ComponentImplementationImpl implements JavaImplementation {
private Class<?> implementationClass;
/**
* Constructor
*/
protected JavaImplementationImpl() {
}
/**
* @see org.apache.tuscany.container.java.assembly.JavaImplementation#getImplementationClass()
*/
public Class getImplementationClass() {
return implementationClass;
}
/**
* @see org.apache.tuscany.container.java.assembly.JavaImplementation#setImplementationClass(java.lang.Class)
*/
public void setImplementationClass(Class value) {
checkNotFrozen();
implementationClass=value;
}
/**
* @see org.apache.tuscany.model.assembly.AssemblyModelObject#initialize(org.apache.tuscany.model.assembly.AssemblyModelContext)
*/
public void initialize(AssemblyModelContext modelContext) {
if (isInitialized())
return;
// Initialize the component type
ComponentType componentType=getComponentType();
if (componentType==null) {
componentType=createComponentType(modelContext, implementationClass);
setComponentType(componentType);
}
super.initialize(modelContext);
}
/**
* Create the component type
* @param modelContext
* @param implClass
*/
private static ComponentType createComponentType(AssemblyModelContext modelContext, Class<?> implClass) {
String baseName = JavaIntrospectionHelper.getBaseName(implClass);
URL componentTypeFile = implClass.getResource(baseName + ".componentType");
if (componentTypeFile != null) {
return modelContext.getAssemblyLoader().loadComponentType(componentTypeFile.toString());
} else {
JavaAssemblyFactory factory = new JavaAssemblyFactoryImpl();
ComponentTypeIntrospector introspector = new Java5ComponentTypeIntrospector(factory);
try {
return introspector.introspect(implClass);
} catch (ConfigurationException e) {
throw new IllegalArgumentException("Unable to introspect implementation class: " + implClass.getName(), e);
}
}
}
}
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