abstractjcrservicefactory.java

workflow first jbpm

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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 software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jbpm.jcr.impl;

import javax.jcr.Credentials;
import javax.jcr.Repository;
import javax.jcr.Session;
import javax.jcr.SimpleCredentials;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jbpm.JbpmException;
import org.jbpm.svc.Service;
import org.jbpm.svc.ServiceFactory;

public abstract class AbstractJcrServiceFactory implements ServiceFactory {

  private static final long serialVersionUID = 1L;
  
  String username = null;
  String password = null;
  String workspace = null;

  public Service openService() {
    Session session = null;
    try {
      Repository jcrRepository = getRepository();
      log.debug("opening jcr session "+(username!=null ? username : "")+" "+(workspace!=null ? workspace : ""));
      if ( (username==null)
           && (workspace==null)
         ) {
        session = jcrRepository.login();
      } else if (username==null) {
        session = jcrRepository.login(workspace);
      } else if (workspace==null) {
        session = jcrRepository.login(getCredentials());
      } else {
        session = jcrRepository.login(getCredentials(), workspace);
      }
    } catch (Exception e) {
      // NOTE that Error's are not caught because that might halt the JVM and mask the original Error.
      throw new JbpmException("couldn't open session to JCR repository, userId("+username+"), workspace("+workspace+")", e);
    }
    return new JcrServiceImpl(session);
  }

  Credentials getCredentials() {
    char[] pwdChars = (password!=null ? password.toCharArray() : null );
    Credentials credentials = new SimpleCredentials(username, pwdChars);
    return credentials;
  }

  protected abstract Repository getRepository();
  
  public void close() {
  }
  
  private static Log log = LogFactory.getLog(AbstractJcrServiceFactory.class);
}