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Spring Framework example source code file (TransactionAttributeSourceAdvisor.java)

This example Spring Framework source code file (TransactionAttributeSourceAdvisor.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

abstractpointcutadvisor, abstractpointcutadvisor, advice, class, io, reflection, serializable, staticmethodmatcherpointcut, string, transactionattributesource, transactionattributesource, transactionattributesourceadvisor, transactionattributesourceadvisor, transactionattributesourcepointcut, transactionattributesourcepointcut, transactioninterceptor

The Spring Framework TransactionAttributeSourceAdvisor.java source code

/*
 * Copyright 2002-2006 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.transaction.interceptor;

import java.io.Serializable;
import java.lang.reflect.Method;

import org.aopalliance.aop.Advice;

import org.springframework.aop.ClassFilter;
import org.springframework.aop.Pointcut;
import org.springframework.aop.support.AbstractPointcutAdvisor;
import org.springframework.aop.support.StaticMethodMatcherPointcut;
import org.springframework.util.ObjectUtils;

/**
 * Advisor driven by a TransactionAttributeSource, used to exclude
 * a TransactionInterceptor from methods that are non-transactional.
 *
 * <p>Because the AOP framework caches advice calculations, this is normally
 * faster than just letting the TransactionInterceptor run and find out
 * itself that it has no work to do.
 *
 * @author Rod Johnson
 * @author Juergen Hoeller
 * @see TransactionInterceptor
 * @see TransactionProxyFactoryBean
 */
public class TransactionAttributeSourceAdvisor extends AbstractPointcutAdvisor {
	
	private TransactionInterceptor transactionInterceptor;

	private final TransactionAttributeSourcePointcut pointcut = new TransactionAttributeSourcePointcut();


	/**
	 * Create a new TransactionAttributeSourceAdvisor.
	 */
	public TransactionAttributeSourceAdvisor() {
	}

	/**
	 * Create a new TransactionAttributeSourceAdvisor.
	 * @param interceptor the transaction interceptor to use for this advisor
	 */
	public TransactionAttributeSourceAdvisor(TransactionInterceptor interceptor) {
		setTransactionInterceptor(interceptor);
	}


	/**
	 * Set the transaction interceptor to use for this advisor.
	 */
	public void setTransactionInterceptor(TransactionInterceptor interceptor) {
		this.transactionInterceptor = interceptor;
	}

	/**
	 * Set the {@link ClassFilter} to use for this pointcut.
	 * Default is {@link ClassFilter#TRUE}.
	 */
	public void setClassFilter(ClassFilter classFilter) {
		this.pointcut.setClassFilter(classFilter);
	}


	public Advice getAdvice() {
		return this.transactionInterceptor;
	}

	public Pointcut getPointcut() {
		return this.pointcut;
	}


	/**
	 * Inner class that implements a Pointcut that matches if the underlying
	 * TransactionAttributeSource has an attribute for a given method.
	 */
	private class TransactionAttributeSourcePointcut extends StaticMethodMatcherPointcut implements Serializable {

		private TransactionAttributeSource getTransactionAttributeSource() {
			return (transactionInterceptor != null ? transactionInterceptor.getTransactionAttributeSource() : null);
		}

		public boolean matches(Method method, Class targetClass) {
			TransactionAttributeSource tas = getTransactionAttributeSource();
			return (tas != null && tas.getTransactionAttribute(method, targetClass) != null);
		}

		public boolean equals(Object other) {
			if (this == other) {
				return true;
			}
			if (!(other instanceof TransactionAttributeSourcePointcut)) {
				return false;
			}
			TransactionAttributeSourcePointcut otherPc = (TransactionAttributeSourcePointcut) other;
			return ObjectUtils.nullSafeEquals(getTransactionAttributeSource(), otherPc.getTransactionAttributeSource());
		}

		public int hashCode() {
			return TransactionAttributeSourcePointcut.class.hashCode();
		}

		public String toString() {
			return getClass().getName() + ": " + getTransactionAttributeSource();
		}
	}

}

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