001    // Copyright 2007 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;
016    
017    import org.apache.tapestry5.beaneditor.DataType;
018    import org.apache.tapestry5.ioc.services.PropertyAdapter;
019    import org.apache.tapestry5.services.DataTypeAnalyzer;
020    
021    /**
022     * Checks for the {@link DataType} annotation, returning its value if present.
023     */
024    public class AnnotationDataTypeAnalyzer implements DataTypeAnalyzer
025    {
026        public String identifyDataType(PropertyAdapter adapter)
027        {
028            DataType annotation = adapter.getAnnotation(DataType.class);
029    
030            return annotation == null ? null : annotation.value();
031        }
032    }