tapestry-annotations/src/java/org/apache/tapestry/annotations/InjectStateAnnotationWorker.java

// Copyright 2005 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package org.apache.tapestry.annotations;

import java.lang.reflect.Method;

import org.apache.hivemind.Location;
import org.apache.tapestry.enhance.EnhancementOperation;
import org.apache.tapestry.spec.IComponentSpecification;
import org.apache.tapestry.spec.InjectSpecification;
import org.apache.tapestry.spec.InjectSpecificationImpl;

/**
 * Injects an Application State Object.
 * 
 * @author Howard M. Lewis Ship
 * @since 4.0
 * @see org.apache.tapestry.annotations.InjectState
 * @see org.apache.tapestry.enhance.InjectStateWorker
 */
public class InjectStateAnnotationWorker implements MethodAnnotationEnhancementWorker
{
    public void performEnhancement(EnhancementOperation op, IComponentSpecification spec,
            Method method, Location location)
    {
        InjectState is = method.getAnnotation(InjectState.class);
        
        String keyName = is.value();

        if (keyName.equals(""))
            keyName = AnnotationUtils.convertMethodNameToKeyName(method.getName());

        String propertyName = AnnotationUtils.getPropertyName(method);

        InjectSpecification inject = new InjectSpecificationImpl();

        inject.setType("state");
        inject.setProperty(propertyName);
        inject.setObject(keyName);
        inject.setLocation(location);

        spec.addInjectSpecification(inject);
    }
}