org.springframework.aop.framework.adapter.DefaultAdvisorAdapterRegistry Maven / Gradle / Ivy
/*
* Copyright 2002-2005 the original author or authors.
*
* 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.springframework.aop.framework.adapter;
import java.util.ArrayList;
import java.util.List;
import org.aopalliance.aop.Advice;
import org.aopalliance.intercept.Interceptor;
import org.springframework.aop.Advisor;
import org.springframework.aop.support.DefaultPointcutAdvisor;
/**
* Default implementation of the AdvisorAdapterRegistry interface.
*
* @author Rod Johnson
*/
public class DefaultAdvisorAdapterRegistry implements AdvisorAdapterRegistry {
private final List adapters = new ArrayList();
public DefaultAdvisorAdapterRegistry() {
// register well-known adapters
registerAdvisorAdapter(new BeforeAdviceAdapter());
registerAdvisorAdapter(new AfterReturningAdviceAdapter());
registerAdvisorAdapter(new ThrowsAdviceAdapter());
}
public Advisor wrap(Object adviceObject) throws UnknownAdviceTypeException {
if (adviceObject instanceof Advisor) {
return (Advisor) adviceObject;
}
if (!(adviceObject instanceof Advice)) {
throw new UnknownAdviceTypeException(adviceObject);
}
Advice advice = (Advice) adviceObject;
if (advice instanceof Interceptor) {
// So well-known it doesn't even need an adapter
return new DefaultPointcutAdvisor(advice);
}
for (int i = 0; i < this.adapters.size(); i++) {
// Check that it is supported
AdvisorAdapter adapter = (AdvisorAdapter) this.adapters.get(i);
if (adapter.supportsAdvice(advice)) {
return new DefaultPointcutAdvisor(advice);
}
}
throw new UnknownAdviceTypeException(advice);
}
public Interceptor getInterceptor(Advisor advisor) throws UnknownAdviceTypeException {
Advice advice = advisor.getAdvice();
if (advice instanceof Interceptor) {
return (Interceptor) advice;
}
for (int i = 0; i < this.adapters.size(); i++) {
AdvisorAdapter adapter = (AdvisorAdapter) this.adapters.get(i);
if (adapter.supportsAdvice(advice)) {
return adapter.getInterceptor(advisor);
}
}
throw new UnknownAdviceTypeException(advisor.getAdvice());
}
public void registerAdvisorAdapter(AdvisorAdapter adapter) {
this.adapters.add(adapter);
}
}