001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.hivemind.schema.rules;
016    
017    import java.util.Map;
018    
019    import org.apache.hivemind.HiveMind;
020    import org.apache.hivemind.Location;
021    import org.apache.hivemind.internal.Module;
022    import org.apache.hivemind.schema.Translator;
023    
024    /**
025     * Interprets a string as an extension point id, and provides the elements for that extension point.
026     * Depending on the target property type the elements will be provided as a List or as a Map.
027     * 
028     * @author Howard Lewis Ship
029     */
030    public class ConfigurationTranslator implements Translator
031    {
032        public Object translate(Module contributingModule, Class propertyType, String inputValue,
033                Location location)
034        {
035            if (HiveMind.isBlank(inputValue))
036                return null;
037    
038            if (propertyType == Map.class && contributingModule.isConfigurationMappable(inputValue))
039                return contributingModule.getConfigurationAsMap(inputValue);
040    
041            return contributingModule.getConfiguration(inputValue);
042        }
043    }