001/* 002 * Copyright (c) 2007-2017 Xplenty, 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.iso.expression; 022 023import cascading.flow.FlowElement; 024import cascading.flow.planner.PlannerContext; 025import cascading.flow.planner.graph.AnnotatedGraph; 026import cascading.flow.planner.graph.ElementGraph; 027 028/** 029 * 030 */ 031public class AnnotationExpression extends ElementExpression 032 { 033 Enum annotation = null; 034 035 public AnnotationExpression( Enum annotation ) 036 { 037 this.annotation = annotation; 038 } 039 040 public AnnotationExpression( ElementCapture capture, Enum annotation ) 041 { 042 super( capture ); 043 this.annotation = annotation; 044 } 045 046 @Override 047 public boolean applies( PlannerContext plannerContext, ElementGraph elementGraph, FlowElement flowElement ) 048 { 049 if( elementGraph instanceof AnnotatedGraph && ( (AnnotatedGraph) elementGraph ).hasAnnotations() ) 050 return ( (AnnotatedGraph) elementGraph ).getAnnotations().getValues( annotation ).contains( flowElement ); 051 052 return false; 053 } 054 055 @Override 056 public String toString() 057 { 058 final StringBuilder sb = new StringBuilder( "AnnotationExpression{" ); 059 sb.append( "annotation=" ).append( annotation ); 060 sb.append( '}' ); 061 return sb.toString(); 062 } 063 }