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
015package org.apache.tapestry5.commons.internal.services;
016
017import org.apache.tapestry5.beaneditor.DataType;
018import org.apache.tapestry5.commons.services.DataTypeAnalyzer;
019import org.apache.tapestry5.commons.services.PropertyAdapter;
020
021/**
022 * Checks for the {@link DataType} annotation, returning its value if present.
023 */
024public 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}