/*
* Copyright 2009 Oleg Nitz, Ralf Joachim
*
* Licensed 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.
*
* $Id$
*/
package org.castor.cpa.persistence.sql.keygen;
import java.util.Hashtable;
import java.util.Map;
import java.util.Set;
import org.castor.core.util.AbstractProperties;
import org.castor.cpa.CPAProperties;
/**
* Registry for {@link KeyGeneratorFactory} implementations obtained from the Castor properties
* file and used by the JDO mapping configuration file.
*
* @author <a href="mailto:on AT ibis DOT odessa DOT ua">Oleg Nitz</a>
* @author <a href="mailto:ralf DOT joachim AT syscon DOT eu">Ralf Joachim</a>
* @version $Revision$ $Date: 2006-04-25 15:08:23 -0600 (Tue, 25 Apr 2006) $
*/
public final class KeyGeneratorFactoryRegistry {
//-----------------------------------------------------------------------------------
/** Association between key generator name and {@link KeyGeneratorFactory} instances. */
private Map<String, KeyGeneratorFactory> _factories =
new Hashtable<String, KeyGeneratorFactory>();
//-----------------------------------------------------------------------------------
/**
* Create a new registry instance of key generator factories. The registry will be initialized
* with all key generator factories specified through <b>KEYGENERATOR_FACTORIES</b> property
* of given properties.
*
* @param properties The properties to use.
*/
public KeyGeneratorFactoryRegistry(final AbstractProperties properties) {
Object[] objects = properties.getObjectArray(
CPAProperties.KEYGENERATOR_FACTORIES, properties.getApplicationClassLoader());
for (int i = 0; i < objects.length; i++) {
KeyGeneratorFactory factory = (KeyGeneratorFactory) objects[i];
_factories.put(factory.getKeyGeneratorName(), factory);
}
}
//-----------------------------------------------------------------------------------
/**
* Returns a key generator factory with the specified name. Returns null if the named factory
* is not supported.
*
* @param name Name of the key generator factory.
* @return The {@link KeyGeneratorFactory} or <code>null</code> if no key generator factory
* with this name exists.
*/
public KeyGeneratorFactory getKeyGeneratorFactory(final String name) {
return _factories.get(name);
}
/**
* Returns an array of names of all the configured key generator factories. The names can be
* used to obtain a key generator factory from {@link #getKeyGeneratorFactory}.
*
* @return Array of names of key generator factories.
*/
public String[] getKeyGeneratorFactoryNames() {
Set<String> keyset = _factories.keySet();
return keyset.toArray(new String[keyset.size()]);
}
//-----------------------------------------------------------------------------------
}