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 import org.apache.commons.pipeline.Stage; 026 027 /** 028 * This annotation is used to describe the objects produced by a {@link Stage}. 029 * If a stage produces the same types of objects that it consumes, it should 030 * be annotated with the {@link ProducesConsumed} annotation instead. 031 * 032 * 033 */ 034 @Target(ElementType.TYPE) 035 @Retention(RetentionPolicy.RUNTIME) 036 public @interface ProducedTypes { 037 /** 038 * The type(s) of object produced by this {@link Stage}. Under ordinary 039 * circumstances, this array should only contain one element. 040 */ 041 public Class<?>[] value(); 042 }