    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
    015package org.apache.tapestry5.internal.services;
    016
    017import org.apache.tapestry5.ValueEncoder;
    018import 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> the type of the value.
    026 */
    027public 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}