001/* $Id: SetPropertiesLoaderHandler.java 992073 2010-09-02 19:37:06Z simonetripodi $
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one or more
004 * contributor license agreements.  See the NOTICE file distributed with
005 * this work for additional information regarding copyright ownership.
006 * The ASF licenses this file to You under the Apache License, Version 2.0
007 * (the "License"); you may not use this file except in compliance with
008 * the License.  You may obtain a copy of the License at
009 *
010 *      http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.commons.digester.annotations.handlers;
019
020import java.lang.reflect.Field;
021
022import org.apache.commons.digester.annotations.DigesterLoaderHandler;
023import org.apache.commons.digester.annotations.FromAnnotationsRuleSet;
024import org.apache.commons.digester.annotations.providers.SetPropertiesRuleProvider;
025import org.apache.commons.digester.annotations.rules.SetProperty;
026
027/**
028 * Handler that takes care to create the {@link SetPropertiesRuleProvider}.
029 *
030 * @since 2.1
031 */
032public final class SetPropertiesLoaderHandler implements DigesterLoaderHandler<SetProperty, Field> {
033
034    /**
035     * {@inheritDoc}
036     */
037    public void handle(SetProperty annotation, Field element, FromAnnotationsRuleSet ruleSet) {
038        SetPropertiesRuleProvider ruleProvider =
039            ruleSet.getProvider(annotation.pattern(), SetPropertiesRuleProvider.class);
040
041        if (ruleProvider == null) {
042            ruleProvider = new SetPropertiesRuleProvider();
043            ruleSet.addRuleProvider(annotation.pattern(), ruleProvider);
044        }
045
046        ruleProvider.addAlias(annotation, element);
047    }
048
049}