/*
* Copyright 2002-2009 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.aspectj.annotation;
import org.springframework.aop.aspectj.SingletonAspectInstanceFactory;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
/**
* Implementation of {@link MetadataAwareAspectInstanceFactory} that is backed
* by a specified singleton object, returning the same instance for every
* {@link #getAspectInstance()} call.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @since 2.0
* @see SimpleMetadataAwareAspectInstanceFactory
*/
public class SingletonMetadataAwareAspectInstanceFactory extends SingletonAspectInstanceFactory
implements MetadataAwareAspectInstanceFactory {
private final AspectMetadata metadata;
/**
* Create a new SingletonMetadataAwareAspectInstanceFactory for the given aspect.
* @param aspectInstance the singleton aspect instance
* @param aspectName the name of the aspect
*/
public SingletonMetadataAwareAspectInstanceFactory(Object aspectInstance, String aspectName) {
super(aspectInstance);
this.metadata = new AspectMetadata(aspectInstance.getClass(), aspectName);
}
public final AspectMetadata getAspectMetadata() {
return this.metadata;
}
/**
* Check whether the aspect class carries an
* {@link org.springframework.core.annotation.Order} annotation,
* falling back to <code>Ordered.LOWEST_PRECEDENCE</code>.
* @see org.springframework.core.annotation.Order
*/
@Override
protected int getOrderForAspectClass(Class<?> aspectClass) {
Order order = aspectClass.getAnnotation(Order.class);
if (order != null) {
return order.value();
}
return Ordered.LOWEST_PRECEDENCE;
}
}