001    // Copyright 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.tapestry.annotations;
016    
017    import java.lang.reflect.Method;
018    
019    import org.apache.hivemind.Location;
020    import org.apache.tapestry.enhance.EnhancementOperation;
021    import org.apache.tapestry.spec.IComponentSpecification;
022    import org.apache.tapestry.spec.InjectSpecification;
023    import org.apache.tapestry.spec.InjectSpecificationImpl;
024    
025    /**
026     * Injects an Application State Object.
027     * 
028     * @author Howard M. Lewis Ship
029     * @since 4.0
030     * @see org.apache.tapestry.annotations.InjectState
031     * @see org.apache.tapestry.enhance.InjectStateWorker
032     */
033    public class InjectStateAnnotationWorker implements MethodAnnotationEnhancementWorker
034    {
035        public void performEnhancement(EnhancementOperation op, IComponentSpecification spec,
036                Method method, Location location)
037        {
038            InjectState is = method.getAnnotation(InjectState.class);
039            
040            String keyName = is.value();
041    
042            if (keyName.equals(""))
043                keyName = AnnotationUtils.convertMethodNameToKeyName(method.getName());
044    
045            String propertyName = AnnotationUtils.getPropertyName(method);
046    
047            InjectSpecification inject = new InjectSpecificationImpl();
048    
049            inject.setType("state");
050            inject.setProperty(propertyName);
051            inject.setObject(keyName);
052            inject.setLocation(location);
053    
054            spec.addInjectSpecification(inject);
055        }
056    }