org.jbpm.ant.AntHelper.java Source code

Introduction

Here is the source code for org.jbpm.ant.AntHelper.java

Source

/*
 * 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.ant;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.cfg.Configuration;
import org.jbpm.JbpmConfiguration;
import org.jbpm.JbpmException;

/**
 * common strategy for jbpm ant tasks to obtain a hibernate SessionFactory.
 */
public abstract class AntHelper {

    final static Map configurations = new HashMap();
    final static Map jbpmConfigurations = new HashMap();

    public static Configuration getConfiguration(String hibernateCfgResource, String hibernatePropertiesResource) {
        Object key = getKey(hibernateCfgResource, hibernatePropertiesResource);
        Configuration configuration = (Configuration) configurations.get(key);
        if (configuration == null) {
            log.debug("creating hibernate configuration from cfg '" + hibernateCfgResource + "' and properties '"
                    + hibernatePropertiesResource + "'");
            configuration = new Configuration();
            configuration.configure(hibernateCfgResource);
            if (hibernatePropertiesResource != null) {
                try {
                    InputStream propertiesInputStream = AntHelper.class.getClassLoader()
                            .getResourceAsStream(hibernatePropertiesResource);
                    log.debug("properties input stream: " + propertiesInputStream);
                    Properties properties = new Properties();
                    properties.load(propertiesInputStream);
                    configuration.setProperties(properties);
                } catch (Exception e) {
                    throw new JbpmException("couldn't set properties '" + hibernatePropertiesResource + "'", e);
                }
            }
            configurations.put(key, configuration);
        } else {
            log.debug("got hibernate configuration from cfg '" + hibernateCfgResource + "' and properties '"
                    + hibernatePropertiesResource + "' from the cache");
        }
        return configuration;
    }

    public static JbpmConfiguration getJbpmConfiguration(String jbpmCfg) {
        JbpmConfiguration jbpmConfiguration = (JbpmConfiguration) jbpmConfigurations.get(jbpmCfg);
        if (jbpmConfiguration == null) {
            if (jbpmCfg == null) {
                jbpmConfiguration = JbpmConfiguration.getInstance();

            } else {
                jbpmConfiguration = JbpmConfiguration.getInstance(jbpmCfg);
            }

            jbpmConfigurations.put(jbpmCfg, jbpmConfiguration);
        }
        return jbpmConfiguration;
    }

    static Object getKey(String cfg, String properties) {
        List key = new ArrayList();
        key.add(cfg);
        key.add(properties);
        return key;
    }

    private static final Log log = LogFactory.getLog(AntHelper.class);
}