tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/services/Coercion.java

// Copyright 2006 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package org.apache.tapestry5.ioc.services;

/**
 * Responsible for converting from one type to another. This is used primarily around component parameters.
 *
 * @param <S> the source type (input)
 * @param <T> the target type (output)
 */
public interface Coercion<S, T>
{
    /**
     * Converts an input value.
     *
     * @param input the input value
     */
    T coerce(S input);
}