001    // Copyright 2010, 2011 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.tapestry5.internal.services.meta;
016    
017    import org.apache.tapestry5.model.MutableComponentModel;
018    import org.apache.tapestry5.plastic.PlasticClass;
019    import org.apache.tapestry5.services.meta.MetaDataExtractor;
020    import org.apache.tapestry5.services.meta.MetaWorker;
021    import org.apache.tapestry5.services.transform.ComponentClassTransformWorker2;
022    import org.apache.tapestry5.services.transform.TransformationSupport;
023    
024    import java.lang.annotation.Annotation;
025    import java.util.Map;
026    
027    @SuppressWarnings("unchecked")
028    public class MetaWorkerImpl implements MetaWorker, ComponentClassTransformWorker2
029    {
030        private final Map<Class, MetaDataExtractor> configuration;
031    
032        public MetaWorkerImpl(Map<Class, MetaDataExtractor> configuration)
033        {
034            this.configuration = configuration;
035        }
036    
037        public ComponentClassTransformWorker2 getWorker()
038        {
039            return this;
040        }
041    
042        public void transform(PlasticClass plasticClass, TransformationSupport support, MutableComponentModel model)
043        {
044            for (Class c : configuration.keySet())
045            {
046                Annotation annotation = plasticClass.getAnnotation(c);
047    
048                if (annotation != null)
049                {
050                    MetaDataExtractor extractor = configuration.get(c);
051    
052                    extractor.extractMetaData(model, annotation);
053                }
054            }
055        }
056    
057    }