// Copyright 2008 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.internal.transform;
import org.apache.tapestry.annotations.Property;
import org.apache.tapestry.ioc.internal.util.InternalUtils;
import org.apache.tapestry.model.MutableComponentModel;
import org.apache.tapestry.services.ClassTransformation;
import org.apache.tapestry.services.ComponentClassTransformWorker;
import org.apache.tapestry.services.TransformMethodSignature;
import java.lang.reflect.Modifier;
/**
* Provides the getter and setter methods. The methods are added as "existing", meaning that field access to them will
* be transformed as necessary by other annotations. This worker needs to be scheduled before any worker that might
* delete a field.
*
* @see org.apache.tapestry.annotations.Property
*/
public class PropertyWorker implements ComponentClassTransformWorker
{
public void transform(ClassTransformation transformation, MutableComponentModel model)
{
for (String fieldName : transformation.findAllFieldsWithAnnotation(Property.class))
{
Property annotation = transformation.getFieldAnnotation(fieldName, Property.class);
String propertyName = InternalUtils.capitalize(InternalUtils.stripMemberPrefix(fieldName));
String fieldType = transformation.getFieldType(fieldName);
if (annotation.read())
{
TransformMethodSignature getter
= new TransformMethodSignature(Modifier.PUBLIC | Modifier.FINAL, fieldType,
"get" + propertyName,
null, null);
transformation.addTransformedMethod(getter, "return " + fieldName + ";");
}
if (annotation.write())
{
TransformMethodSignature setter
= new TransformMethodSignature(Modifier.PUBLIC | Modifier.FINAL, "void", "set" + propertyName,
new String[] { fieldType }, null);
transformation.addTransformedMethod(setter, fieldName + " = $1;");
}
// The field is NOT claimed, because we want annotations for the fields to operate.
}
}
}