001// Copyright 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.plastic;
016
017/**
018 * A wrapper around a {@link PlasticClass} that allows the class to be converted into a concrete class, once all
019 * transformations are complete.
020 * 
021 * @param <T>
022 */
023public interface PlasticClassTransformation<T>
024{
025    /**
026     * Returns the PlasticClass being transformed.
027     * 
028     * @return PlasticClass instance
029     */
030    PlasticClass getPlasticClass();
031
032    /**
033     * Terminates the class transformation process, finishes any final bookkeeping, and
034     * returns an object used to instantiate the transformed class. Once this method is invoked,
035     * no other methods of the {@link PlasticClass} (or related objects) can be invoked.
036     * <p>
037     * The returned ClassInstantiator has an empty {@link InstanceContext} map. Use
038     * {@link ClassInstantiator#with(Class, Object)} to create a new ClassInstantiator with new InstanceContext entries.
039     */
040    ClassInstantiator<T> createInstantiator();
041}