org.bytesoft.bytetcc.supports.spring.CompensableManagerPostProcessor.java Source code

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Here is the source code for org.bytesoft.bytetcc.supports.spring.CompensableManagerPostProcessor.java

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/**
 * Copyright 2014-2016 yangming.liu<bytefox@126.com>.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, see <http://www.gnu.org/licenses/>.
 */
package org.bytesoft.bytetcc.supports.spring;

import java.util.ArrayList;
import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.FatalBeanException;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.config.RuntimeBeanReference;

public class CompensableManagerPostProcessor implements BeanFactoryPostProcessor {
    static final Logger logger = LoggerFactory.getLogger(CompensableManagerPostProcessor.class);

    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        ClassLoader cl = Thread.currentThread().getContextClassLoader();

        String compensableManagerBeanName = null;
        String userCompensableBeanName = null;
        String transactionManagerBeanName = null;
        final List<String> beanNameList = new ArrayList<String>();

        String[] beanNameArray = beanFactory.getBeanDefinitionNames();
        for (int i = 0; i < beanNameArray.length; i++) {
            String beanName = beanNameArray[i];
            BeanDefinition beanDef = beanFactory.getBeanDefinition(beanName);
            String beanClassName = beanDef.getBeanClassName();

            Class<?> beanClass = null;
            try {
                beanClass = cl.loadClass(beanClassName);
            } catch (Exception ex) {
                logger.debug("Cannot load class {}, beanId= {}!", beanClassName, beanName, ex);
                continue;
            }

            if (org.bytesoft.bytejta.supports.jdbc.LocalXADataSource.class.equals(beanClass)) {
                beanNameList.add(beanName);
            } else if (org.bytesoft.bytetcc.UserCompensableImpl.class.equals(beanClass)) {
                beanNameList.add(beanName);
                userCompensableBeanName = beanName;
            } else if (org.bytesoft.bytetcc.TransactionManagerImpl.class.equals(beanClass)) {
                compensableManagerBeanName = beanName;
            } else if (org.springframework.transaction.jta.JtaTransactionManager.class.equals(beanClass)) {
                beanNameList.add(beanName);
                transactionManagerBeanName = beanName;
            }

        }

        if (compensableManagerBeanName == null) {
            throw new FatalBeanException(
                    "No configuration of class org.bytesoft.bytetcc.TransactionManagerImpl was found.");
        }

        if (transactionManagerBeanName == null) {
            throw new FatalBeanException(
                    "No configuration of org.springframework.transaction.jta.JtaTransactionManager was found.");
        }

        for (int i = 0; i < beanNameList.size(); i++) {
            String beanName = beanNameList.get(i);
            BeanDefinition beanDef = beanFactory.getBeanDefinition(beanName);
            MutablePropertyValues mpv = beanDef.getPropertyValues();
            RuntimeBeanReference beanRef = new RuntimeBeanReference(compensableManagerBeanName);
            mpv.addPropertyValue("transactionManager", beanRef);
        }

        BeanDefinition transactionManagerBeanDef = beanFactory.getBeanDefinition(transactionManagerBeanName);
        MutablePropertyValues transactionManagerMPV = transactionManagerBeanDef.getPropertyValues();
        RuntimeBeanReference userCompensableBeanRef = new RuntimeBeanReference(userCompensableBeanName);
        transactionManagerMPV.addPropertyValue("userTransaction", userCompensableBeanRef);
    }

}