package org.apache.torque.generator.configuration.mergepoint;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.torque.generator.configuration.ConfigurationException;
/**
* A registry of ActionSaxHandlerFactories.
*
* $Id: ActionSaxHandlerFactories.java 1331190 2012-04-27 02:41:35Z tfischer $
*/
public class ActionSaxHandlerFactories
{
/** The class log. */
private static Log log = LogFactory.getLog(ActionSaxHandlerFactories.class);
/**
* A map containing all known ActionSaxHandlerFactories,
* keyed by the type of the action.
*/
private Map<String, ActionSaxHandlerFactory> actionSaxHandlerFactories
= new HashMap<String, ActionSaxHandlerFactory>();
/**
* Constructor. Registers the default Factories.
*/
public ActionSaxHandlerFactories()
{
try
{
register(new TraverseAllActionSaxHandlerFactory());
register(new ApplyActionSaxHandlerFactory());
register(new OptionActionSaxHandlerFactory());
register(new SourceElementAttributeActionSaxHandlerFactory());
register(new OutputActionSaxHandlerFactory());
}
catch (ConfigurationException e)
{
// should not happen
log.error("caught ConfigurationException while registering "
+ "the default Action Sax Handler Factories", e);
throw new RuntimeException(e);
}
}
/**
* Registers a handler for a new action type.
*
* @param factory the factory which handles the action of the
* given type.
*
* @throws ConfigurationException if a factory already exists
* for the type of the action.
*/
public void register(
ActionSaxHandlerFactory factory)
throws ConfigurationException
{
ActionSaxHandlerFactory oldFactory
= actionSaxHandlerFactories.get(factory.getType());
if (oldFactory != null)
{
throw new ConfigurationException(
"Attempted to register an ActionSaxHandlerFactory "
+ "of type "
+ factory.getType()
+ " and class "
+ factory.getClass().getName()
+ " : A factory with this type already exists, "
+ " it has the class "
+ oldFactory.getClass().getName());
}
actionSaxHandlerFactories.put(factory.getType(), factory);
}
/**
* Returns the ActionSaxHandlerFactory associated with the given type.
*
* @param type the type top look for, not null.
*
* @return the ActionSaxHandlerFactory associated with the given type,
* or null if no ActionSaxHandlerFactory exists for the given type.
*/
public ActionSaxHandlerFactory getActionSaxHandlerFactory(String type)
{
return actionSaxHandlerFactories.get(type);
}
}