/*
 * Copyright 2002-2012 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.config;

import org.w3c.dom.Element;

import org.springframework.beans.factory.xml.NamespaceHandlerSupport;

NamespaceHandler allowing for the configuration of declarative transaction management using either XML or using annotations. 
This namespace handler is the central piece of functionality in the
Spring transaction management facilities and offers two approaches
to declaratively manage transactions.
One approach uses transaction semantics defined in XML using the <tx:advice> elements, the other uses annotations in combination with the <tx:annotation-driven> element. Both approached are detailed to great extent in the Spring reference manual. 
Author:
Rob Harrop, Juergen Hoeller
Since:
2.0/**
 * {@code NamespaceHandler} allowing for the configuration of
 * declarative transaction management using either XML or using annotations.
 *
 * <p>This namespace handler is the central piece of functionality in the
 * Spring transaction management facilities and offers two approaches
 * to declaratively manage transactions.
 *
 * <p>One approach uses transaction semantics defined in XML using the
 * {@code <tx:advice>} elements, the other uses annotations
 * in combination with the {@code <tx:annotation-driven>} element.
 * Both approached are detailed to great extent in the Spring reference manual.
 *
 * @author Rob Harrop
 * @author Juergen Hoeller
 * @since 2.0
 */
public class TxNamespaceHandler extends NamespaceHandlerSupport {

	static final String TRANSACTION_MANAGER_ATTRIBUTE = "transaction-manager";

	static final String DEFAULT_TRANSACTION_MANAGER_BEAN_NAME = "transactionManager";


	static String getTransactionManagerName(Element element) {
		return (element.hasAttribute(TRANSACTION_MANAGER_ATTRIBUTE) ?
				element.getAttribute(TRANSACTION_MANAGER_ATTRIBUTE) : DEFAULT_TRANSACTION_MANAGER_BEAN_NAME);
	}


	@Override
	public void init() {
		registerBeanDefinitionParser("advice", new TxAdviceBeanDefinitionParser());
		registerBeanDefinitionParser("annotation-driven", new AnnotationDrivenBeanDefinitionParser());
		registerBeanDefinitionParser("jta-transaction-manager", new JtaTransactionManagerBeanDefinitionParser());
	}

}