// 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.tapestry5.internal.transform;

 import org.apache.tapestry5.annotations.Property;

 import org.apache.tapestry5.ioc.internal.util.InternalUtils;

 import org.apache.tapestry5.model.MutableComponentModel;

 import org.apache.tapestry5.services.ClassTransformation;

 import org.apache.tapestry5.services.ComponentClassTransformWorker;

 import org.apache.tapestry5.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.tapestry5.annotations.Property

  */

 public class PropertyWorker implements ComponentClassTransformWorker

 {

     public void transform(ClassTransformation transformation, MutableComponentModel model)

     {

         for (String fieldName : transformation.findFieldsWithAnnotation(Property.class))

         {

             Property annotation = transformation.getFieldAnnotation(fieldName, Property.class);

             String propertyName = InternalUtils.capitalize(InternalUtils.stripMemberName(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 annotation for the fields to operate.

         }

     }

 }