001// Copyright 2006, 2011 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
015package org.apache.tapestry5.services;
016
017import org.apache.tapestry5.model.MutableComponentModel;
018import org.apache.tapestry5.services.transform.ComponentClassTransformWorker2;
019
020/**
021 * Interface for a set of objects that can perform component class transformations. Implementations should be
022 * multithreaded, ideally they should be stateless (all necessary state can be stored in the
023 * {@link org.apache.tapestry5.services.ClassTransformation}).
024 * 
025 * @deprecated Deprecated in Tapestry 5.3; use {@link ComponentClassTransformWorker2}
026 */
027public interface ComponentClassTransformWorker
028{
029    /**
030     * Invoked to perform a transformation on an as-yet unloaded component class, represented by the
031     * {@link ClassTransformation} instance. In some cases, the worker may make changes to the component model -- for
032     * example,
033     * a worker that deals with parameters may update the model to reflect those parameters.
034     */
035    void transform(ClassTransformation transformation, MutableComponentModel model);
036}