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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.provider.stub;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.List;
import org.apache.tuscany.sca.context.PropertyValueFactory;
import org.apache.tuscany.sca.core.invocation.ProxyFactory;
import org.apache.tuscany.sca.implementation.spring.SpringImplementation;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
/**
* This is the Tuscany side stub for the corresponding runtime tie class.
* It enables the Tuscany code to invoke methods on a Spring context without
* needing to know about any Spring classes. See the SpringContextTie class
* in the implementation-spring-runtime module for what the tie does.
*/
public class SpringContextStub {
private static final String SPRING_IMPLEMENTATION_STUB =
"org.apache.tuscany.sca.implementation.spring.context.tie.SpringImplementationStub";
private static final String SPRING_CONTEXT_TIE =
"org.apache.tuscany.sca.implementation.spring.context.tie.SpringContextTie";
private Object tie;
private Method startMethod;
private Method closeMethod;
private Method getBeanMethod;
public SpringContextStub(RuntimeComponent component,
SpringImplementation implementation,
Object parentApplicationContext,
ProxyFactory proxyService,
PropertyValueFactory propertyValueObjectFactory) {
initTie(component, implementation, parentApplicationContext, propertyValueObjectFactory);
}
private void initTie(RuntimeComponent component,
SpringImplementation implementation,
Object parentApplicationContext,
PropertyValueFactory propertyValueObjectFactory) {
// TODO: what class loader to use?
ClassLoader cl = Thread.currentThread().getContextClassLoader();
try {
Class<?> stubClass = Class.forName(SPRING_IMPLEMENTATION_STUB, true, cl);
Constructor<?> stubConstructor = stubClass.getConstructor(new Class<?>[] {Object.class});
Object stub =
stubConstructor.newInstance(new SpringImplementationTie(implementation, parentApplicationContext,
component, propertyValueObjectFactory));
Class<?> tieClass = Class.forName(SPRING_CONTEXT_TIE, true, cl);
Constructor<?> tieConstructor = tieClass.getConstructor(new Class<?>[] {stubClass, List.class});
this.tie = tieConstructor.newInstance(stub, implementation.getResource());
this.startMethod = tieClass.getMethod("start");
this.closeMethod = tieClass.getMethod("close");
this.getBeanMethod = tieClass.getMethod("getBean", String.class);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
} catch (SecurityException e) {
throw new RuntimeException(e);
} catch (NoSuchMethodException e) {
throw new RuntimeException(e);
} catch (IllegalArgumentException e) {
throw new RuntimeException(e);
} catch (InstantiationException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
} catch (InvocationTargetException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
public void start() {
try {
startMethod.invoke(tie);
} catch (IllegalArgumentException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
} catch (InvocationTargetException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
public void close() {
try {
closeMethod.invoke(tie);
} catch (IllegalArgumentException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
} catch (InvocationTargetException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
public Object getBean(String id) throws SpringInvocationException {
try {
return getBeanMethod.invoke(tie, id);
} catch (IllegalArgumentException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
} catch (InvocationTargetException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
}
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