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    
015    package org.apache.tapestry5.ioc.annotations;
016    
017    import java.lang.annotation.*;
018    
019    
020    /**
021     * Used to guide Tapestry when coercing from a raw type to a field or parameter type, by forcing Tapestry to coerce to
022     * the intermediate type.  This was introduced to allow coercion from string to a time period (in milliseconds) via
023     * {@link org.apache.tapestry5.ioc.util.TimeInterval}.
024     *
025     * @see org.apache.tapestry5.ioc.annotations.Value
026     * @see org.apache.tapestry5.ioc.annotations.Symbol
027     */
028    @Target({ ElementType.PARAMETER, ElementType.FIELD })
029    @Retention(RetentionPolicy.RUNTIME)
030    @Documented
031    @UseWith(AnnotationUseContext.SERVICE)
032    public @interface IntermediateType
033    {
034        /**
035         * The intermediate to coerce through.
036         */
037        Class value();
038    }