001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    package org.apache.commons.pipeline.validation;
019    
020    import java.lang.annotation.ElementType;
021    import java.lang.annotation.Retention;
022    import java.lang.annotation.RetentionPolicy;
023    import java.lang.annotation.Target;
024    
025    /**
026     * This annotation is used to aggregate information about the branches
027     * served by a give Stage.
028     *
029     *
030     */
031    @Target(ElementType.TYPE)
032    @Retention(RetentionPolicy.RUNTIME)
033    public @interface Branches {
034        /**
035         * Returns the array of branch key/production pairs that describe the
036         * data being produced by the annotated stage on various branches.
037         */
038        public ProductionOnBranch[] productionOnBranches() default { };
039        
040        /**
041         * Returns the array of branch keys for which the stage produces the
042         * same type of object as it consumes.
043         */
044        public String[] producesConsumedOnBranches() default { };
045    }