001// Licensed under the Apache License, Version 2.0 (the "License");
002// you may not use this file except in compliance with the License.
003// You may obtain a copy of the License at
004//
005// http://www.apache.org/licenses/LICENSE-2.0
006//
007// Unless required by applicable law or agreed to in writing, software
008// distributed under the License is distributed on an "AS IS" BASIS,
009// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
010// See the License for the specific language governing permissions and
011// limitations under the License.
012
013package org.apache.tapestry5.plastic;
014
015/**
016 * A wrapper around a {@link PlasticClass} that allows the class to be converted into a concrete class, once all
017 * transformations are complete.
018 * 
019 * @param <T> the type being generated.
020 */
021public interface PlasticClassTransformation<T>
022{
023    /**
024     * Returns the PlasticClass being transformed.
025     * 
026     * @return PlasticClass instance
027     */
028    PlasticClass getPlasticClass();
029
030    /**
031     * Terminates the class transformation process, finishes any final bookkeeping, and
032     * returns an object used to instantiate the transformed class. Once this method is invoked,
033     * no other methods of the {@link PlasticClass} (or related objects) can be invoked.
034     *
035     * The returned ClassInstantiator has an empty {@link InstanceContext} map. Use
036     * {@link ClassInstantiator#with(Class, Object)} to create a new ClassInstantiator with new InstanceContext entries.
037     */
038    ClassInstantiator<T> createInstantiator();
039}