    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
    015    package org.apache.tapestry5.internal.services;
    016
    017    import org.apache.tapestry5.ValueEncoder;
    018    import org.apache.tapestry5.ioc.services.TypeCoercer;
    019    import 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     */
    025    public 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    }