/*
* 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.context.exe;
import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.jbpm.JbpmConfiguration;
import org.jbpm.JbpmException;
import org.jbpm.configuration.ObjectFactory;
import org.jbpm.configuration.ObjectFactoryParser;
import org.jbpm.util.ClassLoaderUtil;
import org.jbpm.util.CollectionUtil;
/**
* specifies for one java-type how jbpm is able to persist objects of that type in the database.
*/
public class JbpmType {
static Map<ObjectFactory, List<JbpmType>> jbpmTypesCache = new HashMap<ObjectFactory, List<JbpmType>>();
final JbpmTypeMatcher jbpmTypeMatcher;
final Converter converter;
final Class<? extends VariableInstance> variableInstanceClass;
public JbpmType(JbpmTypeMatcher jbpmTypeMatcher, Converter converter,
Class<? extends VariableInstance> variableInstanceClass) {
this.jbpmTypeMatcher = jbpmTypeMatcher;
this.converter = converter;
this.variableInstanceClass = variableInstanceClass;
}
public Converter getConverter() {
return converter;
}
public boolean matches(Object value) {
return jbpmTypeMatcher.matches(value);
}
public VariableInstance newVariableInstance() {
VariableInstance variableInstance = null;
try {
variableInstance = variableInstanceClass.newInstance();
variableInstance.converter = converter;
}
catch (Exception e) {
throw new JbpmException("couldn't instantiate variable instance class '"
+ variableInstanceClass.getName()
+ "'");
}
return variableInstance;
}
public static List<JbpmType> getJbpmTypes() {
List<JbpmType> jbpmTypes = null;
ObjectFactory objectFactory = JbpmConfiguration.Configs.getObjectFactory();
synchronized (jbpmTypesCache) {
jbpmTypes = jbpmTypesCache.get(objectFactory);
if (jbpmTypes == null) {
if (objectFactory.hasObject("jbpm.types")) {
jbpmTypes = CollectionUtil.checkList((List<?>) objectFactory.createObject("jbpm.types"),
JbpmType.class);
}
else {
jbpmTypes = getDefaultJbpmTypes();
}
jbpmTypesCache.put(objectFactory, jbpmTypes);
}
}
return jbpmTypes;
}
private static List<JbpmType> getDefaultJbpmTypes() {
String resource = JbpmConfiguration.Configs.getString("resource.varmapping");
InputStream is = ClassLoaderUtil.getStream(resource);
ObjectFactory objectFactory = ObjectFactoryParser.parseInputStream(is);
return CollectionUtil.checkList((List<?>) objectFactory.createObject("jbpm.types"),
JbpmType.class);
}
}