// 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.hivemind.Resource;
import org.apache.tapestry.enhance.EnhancementOperation;
import org.apache.tapestry.spec.AssetSpecification;
import org.apache.tapestry.spec.IAssetSpecification;
import org.apache.tapestry.spec.IComponentSpecification;
import org.apache.tapestry.util.DescribedLocation;
/**
* Uses the {@link org.apache.tapestry.annotations.Asset} annotation to create a new
* {@link org.apache.tapestry.spec.IAssetSpecification} which is then added to the
* {@link org.apache.tapestry.spec.IComponentSpecification}.
*
* @author Howard Lewis Ship
* @since 4.0
*/
public class AssetAnnotationWorker implements MethodAnnotationEnhancementWorker
{
public void performEnhancement(EnhancementOperation op, IComponentSpecification spec,
Method method, Location location)
{
Asset asset = method.getAnnotation(Asset.class);
String propertyName = AnnotationUtils.getPropertyName(method);
IAssetSpecification as = new AssetSpecification();
as.setPath(asset.value());
as.setPropertyName(propertyName);
// Very important for assets, as they need a location (really, the Resource
// of a location) to figure out what kind of asset they are.
Resource specResource = spec.getSpecificationLocation();
Location assetLocation = new DescribedLocation(specResource, location.toString());
as.setLocation(assetLocation);
spec.addAsset(propertyName, as);
}
}