org.camunda.bpm.engine.impl.cfg.JtaProcessEngineConfiguration Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of camunda-engine Show documentation
There is a newer version: 7.23.0-alpha2
/* 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.camunda.bpm.engine.impl.cfg;

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

import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.transaction.TransactionManager;

import org.camunda.bpm.engine.ProcessEngineException;
import org.camunda.bpm.engine.impl.cfg.jta.JtaTransactionContextFactory;
import org.camunda.bpm.engine.impl.cfg.standalone.StandaloneMybatisTransactionContextFactory;
import org.camunda.bpm.engine.impl.interceptor.CommandContextFactory;
import org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor;
import org.camunda.bpm.engine.impl.interceptor.CommandInterceptor;
import org.camunda.bpm.engine.impl.interceptor.JtaTransactionInterceptor;
import org.camunda.bpm.engine.impl.interceptor.LogInterceptor;
import org.camunda.bpm.engine.impl.interceptor.TxContextCommandContextFactory;


/**
 * @author Tom Baeyens
 */
public class JtaProcessEngineConfiguration extends ProcessEngineConfigurationImpl {

  protected TransactionManager transactionManager;
  
  protected String transactionManagerJndiName;
  
  /** {@link CommandContextFactory} to be used for DbSchemaOperations */
  protected CommandContextFactory dbSchemaOperationsCommandContextFactory;
  
  public JtaProcessEngineConfiguration() {
    transactionsExternallyManaged = true;
  }
  
  protected void init() {
    initTransactionManager();
    initDbSchemaOperationsCommandContextFactory();
    super.init();
  }

  @Override
  protected Collection< ? extends CommandInterceptor> getDefaultCommandInterceptorsTxRequired() {
    List defaultCommandInterceptorsTxRequired = new ArrayList();
    defaultCommandInterceptorsTxRequired.add(new LogInterceptor());
    defaultCommandInterceptorsTxRequired.add(new JtaTransactionInterceptor(transactionManager, false));
    defaultCommandInterceptorsTxRequired.add(new CommandContextInterceptor(commandContextFactory, this));
    return defaultCommandInterceptorsTxRequired;
  }

  @Override
  protected Collection< ? extends CommandInterceptor> getDefaultCommandInterceptorsTxRequiresNew() {
    List defaultCommandInterceptorsTxRequiresNew = new ArrayList();
    defaultCommandInterceptorsTxRequiresNew.add(new LogInterceptor());
    defaultCommandInterceptorsTxRequiresNew.add(new JtaTransactionInterceptor(transactionManager, true));
    defaultCommandInterceptorsTxRequiresNew.add(new CommandContextInterceptor(commandContextFactory, this));
    return defaultCommandInterceptorsTxRequiresNew;
  }

  /**
   * provide custom command executor that uses NON-JTA transactions
   */
  @Override
  protected void initCommandExecutorDbSchemaOperations() {
    if(commandExecutorSchemaOperations == null) {
      List commandInterceptorsDbSchemaOperations = new ArrayList();
      commandInterceptorsDbSchemaOperations.add(new LogInterceptor());
      commandInterceptorsDbSchemaOperations.add(new CommandContextInterceptor(dbSchemaOperationsCommandContextFactory, this));
      commandInterceptorsDbSchemaOperations.add(actualCommandExecutor);
      commandExecutorSchemaOperations = initInterceptorChain(commandInterceptorsDbSchemaOperations);
    }
  }

  protected void initDbSchemaOperationsCommandContextFactory() {
    if(dbSchemaOperationsCommandContextFactory == null) {
      TxContextCommandContextFactory cmdContextFactory = new TxContextCommandContextFactory();
      cmdContextFactory.setProcessEngineConfiguration(this);
      cmdContextFactory.setTransactionContextFactory(new StandaloneMybatisTransactionContextFactory());
      dbSchemaOperationsCommandContextFactory = cmdContextFactory;
    }
  }
    
  protected void initTransactionManager() {
    if(transactionManager == null){
      
      if(transactionManagerJndiName == null || transactionManagerJndiName.length() == 0) {
        throw new ProcessEngineException("Property 'transactionManager' is null and 'transactionManagerJndiName' is not set. \n " +
        		"Please set either the 'transactionManager' property or the 'transactionManagerJndiName' property.");
      }
      
      try {
        transactionManager = (TransactionManager) new InitialContext().lookup(transactionManagerJndiName);        
        
      } catch(NamingException e) {
        throw new ProcessEngineException("Cannot lookup Jta TransactionManager in JNDI using name '"+transactionManagerJndiName+"'.", e);        
      }
    }    
  }
  
  @Override
  protected void initTransactionContextFactory() {
    if(transactionContextFactory == null) {
      transactionContextFactory = new JtaTransactionContextFactory(transactionManager);
    }
  }
  
  public TransactionManager getTransactionManager() {
    return transactionManager;
  }

  public void setTransactionManager(TransactionManager transactionManager) {
    this.transactionManager = transactionManager;
  }
  
  public String getTransactionManagerJndiName() {
    return transactionManagerJndiName;
  }
  
  public void setTransactionManagerJndiName(String transactionManagerJndiName) {
    this.transactionManagerJndiName = transactionManagerJndiName;
  }
  
  public CommandContextFactory getDbSchemaOperationsCommandContextFactory() {
    return dbSchemaOperationsCommandContextFactory;
  }
  
  public void setDbSchemaOperationsCommandContextFactory(CommandContextFactory dbSchemaOperationsCommandContextFactory) {
    this.dbSchemaOperationsCommandContextFactory = dbSchemaOperationsCommandContextFactory;
  }
}