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 */
018 package org.apache.commons.digester.annotations.handlers;
019
020 import java.lang.reflect.Field;
021
022 import org.apache.commons.digester.annotations.DigesterLoaderHandler;
023 import org.apache.commons.digester.annotations.FromAnnotationsRuleSet;
024 import org.apache.commons.digester.annotations.providers.SetPropertiesRuleProvider;
025 import 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 */
032 public 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 }