001// Copyright 2007, 2008, 2009 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.ioc.annotations;
016
017import java.lang.annotation.Documented;
018import java.lang.annotation.ElementType;
019import java.lang.annotation.Retention;
020import java.lang.annotation.RetentionPolicy;
021import java.lang.annotation.Target;
022
023
024/**
025 * Used to guide Tapestry when coercing from a raw type to a field or parameter type, by forcing Tapestry to coerce to
026 * the intermediate type.  This was introduced to allow coercion from string to a time period (in milliseconds) via
027 * <a href="https://tapestry.apache.org/current/apidocs/org/apache/tapestry5/commons/util/TimeInterval.html">TimeInterval</a>
028 *
029 * @see org.apache.tapestry5.ioc.annotations.Value
030 * @see org.apache.tapestry5.ioc.annotations.Symbol
031 */
032@Target({ ElementType.PARAMETER, ElementType.FIELD })
033@Retention(RetentionPolicy.RUNTIME)
034@Documented
035@UseWith(AnnotationUseContext.SERVICE)
036public @interface IntermediateType
037{
038    /**
039     * The intermediate to coerce through.
040     */
041    Class value();
042}