/*
|
* 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.jpdl.internal.convert.action;
|
|
import java.io.InputStream;
|
import java.util.HashMap;
|
import java.util.Iterator;
|
import java.util.Map;
|
import java.util.Set;
|
|
import org.apache.commons.logging.Log;
|
import org.apache.commons.logging.LogFactory;
|
import org.dom4j.DocumentException;
|
import org.dom4j.Element;
|
import org.dom4j.io.SAXReader;
|
import org.jbpm.jpdl.internal.convert.node.NodeConverterTypes;
|
|
/**
|
* This originates from jbpm3 code base
|
* It reads the "META-INF/action.converter.types.xml" configuration to load the class to convert
|
* Action elements
|
*/
|
|
public class ActionConverterTypes {
|
|
public static Set<Class<? extends Action>> getActionTypes() {
|
return actionNames.keySet();
|
}
|
|
public static Set<String> getActionNames() {
|
return actionTypes.keySet();
|
}
|
|
public static Class<? extends Action> getActionType(String name) {
|
return actionTypes.get(name);
|
}
|
|
public static String getActionName(Class<? extends Action> type) {
|
return actionNames.get(type);
|
}
|
|
public static boolean hasActionName(String name) {
|
return actionTypes.containsKey(name);
|
}
|
|
private static SAXReader reader = new SAXReader();
|
static final Log log = LogFactory.getLog(ActionConverterTypes.class);
|
static Map<String, Class<? extends Action>> actionTypes = initialiseActionTypes();
|
static Map<Class<? extends Action>, String> actionNames = NodeConverterTypes.createInverseMapping(actionTypes);
|
|
static Map<String, Class<? extends Action>> initialiseActionTypes() {
|
Map<String, Class<? extends Action>> types = new HashMap<String, Class<? extends Action>>();
|
|
InputStream actionTypesStream = ActionConverterTypes.class
|
.getClassLoader().getResourceAsStream(
|
"action.converter.types.xml");
|
|
Element actionTypesElement = null;
|
try {
|
actionTypesElement = reader.read(actionTypesStream)
|
.getRootElement();
|
} catch (DocumentException e1) {
|
log.error("Failed to parse the action.converter.types.xml", e1);
|
}
|
|
Iterator<?> actionTypeIterator = actionTypesElement
|
.elementIterator("action-type");
|
while (actionTypeIterator.hasNext()) {
|
Element actionTypeElement = (Element) actionTypeIterator.next();
|
|
String elementTag = actionTypeElement.attributeValue("element");
|
String className = actionTypeElement.attributeValue("class");
|
try {
|
Class<?> actionClass = ActionConverterTypes.class.forName(className);
|
types.put(elementTag, actionClass.asSubclass(Action.class));
|
|
} catch (Exception e) {
|
// NOTE that Error's are not caught because that might halt the
|
// JVM and mask the original Error.
|
if (log.isDebugEnabled()) {
|
log.debug("action '" + elementTag
|
+ "' will not be available. class '" + className
|
+ "' couldn't be loaded");
|
}
|
}
|
}
|
return types;
|
}
|
|
}
|