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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.implementation.spring.introspect;
import java.util.List;
import org.apache.tuscany.sca.assembly.AssemblyFactory;
import org.apache.tuscany.sca.assembly.ComponentType;
import org.apache.tuscany.sca.contribution.service.ContributionResolveException;
import org.apache.tuscany.sca.implementation.java.DefaultJavaImplementationFactory;
import org.apache.tuscany.sca.implementation.java.IntrospectionException;
import org.apache.tuscany.sca.implementation.java.JavaImplementation;
import org.apache.tuscany.sca.implementation.java.JavaImplementationFactory;
import org.apache.tuscany.sca.implementation.java.introspect.impl.BaseJavaClassVisitor;
import org.apache.tuscany.sca.implementation.java.introspect.JavaClassVisitor;
import org.apache.tuscany.sca.implementation.java.introspect.impl.ComponentNameProcessor;
import org.apache.tuscany.sca.implementation.java.introspect.impl.ConstructorProcessor;
import org.apache.tuscany.sca.implementation.java.introspect.impl.ContextProcessor;
import org.apache.tuscany.sca.implementation.java.introspect.impl.DestroyProcessor;
import org.apache.tuscany.sca.implementation.java.introspect.impl.EagerInitProcessor;
import org.apache.tuscany.sca.implementation.java.introspect.impl.InitProcessor;
import org.apache.tuscany.sca.implementation.java.introspect.impl.PolicyProcessor;
import org.apache.tuscany.sca.implementation.java.introspect.impl.PropertyProcessor;
import org.apache.tuscany.sca.implementation.java.introspect.impl.ReferenceProcessor;
import org.apache.tuscany.sca.implementation.java.introspect.impl.ResourceProcessor;
import org.apache.tuscany.sca.implementation.java.introspect.impl.ServiceProcessor;
import org.apache.tuscany.sca.implementation.spring.SpringConstructorArgElement;
import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
import org.apache.tuscany.sca.policy.PolicyFactory;
/**
* Provides introspection functions for Spring beans
* This version leans heavily on the implementation-java classes
*
* @version $Rev: 512919 $ $Date: 2007-02-28 19:32:56 +0000 (Wed, 28 Feb 2007) $
*/
public class SpringBeanIntrospector {
private JavaImplementationFactory javaImplementationFactory;
/**
* The constructor sets up the various visitor elements that will be used to introspect
* the Spring bean and extract SCA information.
*
* @param assemblyFactory The Assembly Factory to use
* @param javaFactory The Java Interface Factory to use
* @param policyFactory The Policy Factory to use.
*/
public SpringBeanIntrospector(AssemblyFactory assemblyFactory,
JavaInterfaceFactory javaFactory,
PolicyFactory policyFactory,
List<SpringConstructorArgElement> conArgs) {
javaImplementationFactory = new DefaultJavaImplementationFactory();
// Create the list of class visitors
BaseJavaClassVisitor[] extensions =
new BaseJavaClassVisitor[] {
new ConstructorProcessor(assemblyFactory),
new ComponentNameProcessor(assemblyFactory),
new ContextProcessor(assemblyFactory),
new DestroyProcessor(assemblyFactory),
new EagerInitProcessor(assemblyFactory),
new InitProcessor(assemblyFactory),
new PropertyProcessor(assemblyFactory),
new ReferenceProcessor(assemblyFactory, javaFactory),
new ResourceProcessor(assemblyFactory),
new ServiceProcessor(assemblyFactory, javaFactory),
new SpringBeanPojoProcessor(assemblyFactory, javaFactory, conArgs),
new PolicyProcessor(assemblyFactory, policyFactory)};
for (JavaClassVisitor extension : extensions) {
javaImplementationFactory.addClassVisitor(extension);
}
} // end constructor
/**
* Introspect a Spring Bean and extract the features important to SCA
* @param beanClass the Spring Bean class to introspect
* @param componentType the componentType that is filled in through the introspection
* process (assumed empty on invocation, filled on return
* @return a Map of property names to JavaElementImpl
* @throws ContributionResolveException - if there was a problem resolving the
* Spring Bean or its componentType
*
*/
public JavaImplementation introspectBean(Class<?> beanClass, ComponentType componentType) throws ContributionResolveException
{
if (componentType == null)
throw new ContributionResolveException("Introspect Spring bean: supplied componentType is null");
// Create a Java implementation ready for the introspection
JavaImplementation javaImplementation = javaImplementationFactory.createJavaImplementation();
try {
// Introspect the bean...the results of the introspection are placed into the Java implementation
javaImplementationFactory.createJavaImplementation(javaImplementation, beanClass);
// Extract the services, references & properties found through introspection
// put the services, references and properties into the component type
componentType.getServices().addAll(javaImplementation.getServices());
componentType.getReferences().addAll(javaImplementation.getReferences());
componentType.getProperties().addAll(javaImplementation.getProperties());
} catch (IntrospectionException e) {
throw new ContributionResolveException(e);
} // end try
/* List<Service> services = javaImplementation.getServices();
for (Service service : services) {
String name = service.getName();
System.out.println("Spring Bean: found service with name: " + name);
} // end for */
return javaImplementation;
} // end method introspectBean
} // end class SpringBeanIntrospector
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