001    // Copyright 2006, 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.Documented;
018    import static java.lang.annotation.ElementType.METHOD;
019    import java.lang.annotation.Retention;
020    import static java.lang.annotation.RetentionPolicy.RUNTIME;
021    import java.lang.annotation.Target;
022    
023    /**
024     * Used with a service decorator method to control the order in which decorations occur. Identifies other decorators
025     * which should occur before the annotated decorator.
026     *
027     * @see org.apache.tapestry5.ioc.def.DecoratorDef
028     */
029    @Target(METHOD)
030    @Retention(RUNTIME)
031    @Documented
032    @UseWith(AnnotationUseContext.SERVICE_DECORATOR)
033    public @interface Order
034    {
035        /**
036         * Any number of ordering constraint strings.
037         */
038        String[] value();
039    }