/*
* 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.pvm.internal.processengine;
import org.hibernate.cfg.Configuration;
import org.jbpm.api.ProcessEngine;
import org.jbpm.internal.log.Log;
import org.jbpm.pvm.internal.cfg.ConfigurationImpl;
import org.jbpm.pvm.internal.env.EnvironmentFactory;
import org.jbpm.pvm.internal.env.EnvironmentImpl;
import org.jbpm.pvm.internal.env.PvmEnvironment;
import org.jbpm.pvm.internal.env.SpringContext;
import org.jbpm.pvm.internal.wire.descriptor.ProvidedObjectDescriptor;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.orm.hibernate3.LocalSessionFactoryBean;
/**
* this environment factory will see only the singleton beans.
*
* The created {@link SpringEnvironment}s will see the prototype beans and it
* will cache them.
*
* @author Andries Inze
*/
public class SpringProcessEngine extends ProcessEngineImpl implements EnvironmentFactory, ProcessEngine {
private static final Log log = Log.getLog(SpringProcessEngine.class.getName());
private static final long serialVersionUID = 1L;
private ApplicationContext applicationContext;
public static ProcessEngine create(ConfigurationImpl configuration) {
SpringProcessEngine springProcessEngine = null;
ApplicationContext applicationContext = null;
if (configuration.isInstantiatedFromSpring()) {
applicationContext = (ApplicationContext) configuration.getApplicationContext();
springProcessEngine = new SpringProcessEngine();
springProcessEngine.applicationContext = applicationContext;
springProcessEngine.initializeProcessEngine(configuration);
LocalSessionFactoryBean localSessionFactoryBean = springProcessEngine.get(LocalSessionFactoryBean.class);
Configuration hibernateConfiguration = localSessionFactoryBean.getConfiguration();
springProcessEngine.processEngineWireContext
.getWireDefinition()
.addDescriptor(new ProvidedObjectDescriptor(hibernateConfiguration, true));
springProcessEngine.checkDb(configuration);
} else {
String springCfg = (String) configuration.getProcessEngineWireContext().get("spring.cfg");
if (springCfg==null) {
springCfg = "applicationContext.xml";
}
applicationContext = new ClassPathXmlApplicationContext(springCfg);
springProcessEngine = (SpringProcessEngine) applicationContext.getBean("processEngine");
}
return springProcessEngine;
}
public EnvironmentImpl openEnvironment() {
PvmEnvironment environment = new PvmEnvironment(this);
if (log.isTraceEnabled())
log.trace("opening jbpm-spring" + environment);
environment.setContext(new SpringContext(applicationContext));
installAuthenticatedUserId(environment);
installProcessEngineContext(environment);
installTransactionContext(environment);
return environment;
}
@SuppressWarnings("unchecked")
@Override
public <T> T get(Class<T> type) {
String[] names = applicationContext.getBeanNamesForType(type);
if (names.length >= 1) {
if (names.length > 1 && log.isWarnEnabled()) {
log.warn("Multiple beans for type " + type + " found. Returning the first result.");
}
return (T) applicationContext.getBean(names[0]);
}
return super.get(type);
}
@Override
public Object get(String key) {
if (applicationContext.containsBean(key)) {
return applicationContext.getBean(key);
}
return super.get(key);
}
}