    001    // Copyright 2007, 2008 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.internal.services;
    016
    017    import org.apache.tapestry5.ValueEncoder;
    018    import org.apache.tapestry5.services.ValueEncoderFactory;
    019
    020    /**
    021     * An implementation of {@link ValueEncoderFactory} that returns a pre-wired instance of {@link ValueEncoder}. This is
    022     * odd for a factory, because it doesn't actually create the returned instance, just stores it until the encoder is
    023     * needed.
    024     *
    025     * @param <V>
    026     */
    027    public class GenericValueEncoderFactory<V> implements ValueEncoderFactory<V>
    028    {
    029        private final ValueEncoder<V> encoder;
    030
    031        public GenericValueEncoderFactory(ValueEncoder<V> encoder)
    032        {
    033            this.encoder = encoder;
    034        }
    035
    036        public ValueEncoder<V> create(Class<V> type)
    037        {
    038            return encoder;
    039        }
    040
    041        public static <V> GenericValueEncoderFactory<V> create(ValueEncoder<V> encoder)
    042        {
    043            return new GenericValueEncoderFactory<V>(encoder);
    044        }
    045    }