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    
015    package org.apache.tapestry5.services;
016    
017    import org.apache.tapestry5.model.MutableComponentModel;
018    import 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     */
027    public 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    }