001// Copyright 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.ioc.services.TypeCoercer;
019import org.apache.tapestry5.services.ValueEncoderFactory;
020
021/**
022 * Provides {@link org.apache.tapestry5.ValueEncoder} instances that are backed by the {@link
023 * org.apache.tapestry5.ioc.services.TypeCoercer} service.
024 */
025public class TypeCoercedValueEncoderFactory implements ValueEncoderFactory<Object>
026{
027    private final TypeCoercer typeCoercer;
028
029    public TypeCoercedValueEncoderFactory(TypeCoercer typeCoercer)
030    {
031        this.typeCoercer = typeCoercer;
032    }
033
034    public ValueEncoder<Object> create(final Class<Object> type)
035    {
036        return new ValueEncoder<Object>()
037        {
038            public String toClient(Object value)
039            {
040                return typeCoercer.coerce(value, String.class);
041            }
042
043            public Object toValue(String clientValue)
044            {
045                return typeCoercer.coerce(clientValue, type);
046            }
047        };
048    }
049}