001/* 002 * Copyright (c) 2007-2015 Concurrent, Inc. All Rights Reserved. 003 * 004 * Project and contact information: http://www.cascading.org/ 005 * 006 * This file is part of the Cascading project. 007 * 008 * Licensed under the Apache License, Version 2.0 (the "License"); 009 * you may not use this file except in compliance with the License. 010 * You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, software 015 * distributed under the License is distributed on an "AS IS" BASIS, 016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 017 * See the License for the specific language governing permissions and 018 * limitations under the License. 019 */ 020 021package cascading.flow.planner.graph; 022 023import cascading.flow.FlowElement; 024import cascading.util.EnumMultiMap; 025 026/** 027 * 028 */ 029public abstract class BaseAnnotatedElementGraph extends BaseElementGraph implements AnnotatedGraph 030 { 031 protected EnumMultiMap<FlowElement> annotations; 032 033 public boolean hasAnnotations() 034 { 035 return annotations != null && !annotations.isEmpty(); 036 } 037 038 public EnumMultiMap<FlowElement> getAnnotations() 039 { 040 if( annotations == null ) 041 annotations = new EnumMultiMap<>(); 042 043 return annotations; 044 } 045 046 protected void addParentAnnotations( ElementGraph parent ) 047 { 048 if( parent instanceof AnnotatedGraph && ( ( (AnnotatedGraph) parent ) ).hasAnnotations() ) 049 getAnnotations().addAll( ( (AnnotatedGraph) parent ).getAnnotations() ); 050 } 051 052 @Override 053 public int hashCode() 054 { 055 int result = super.hashCode(); 056 result = 31 * result + ( annotations != null ? annotations.hashCode() : 0 ); 057 return result; 058 } 059 }