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.ElementGraph; 026 027/** 028 * 029 */ 030public class NotElementExpression extends ElementExpression 031 { 032 public static ElementExpression not( ElementExpression elementMatcher ) 033 { 034 return new NotElementExpression( elementMatcher ); 035 } 036 037 ElementExpression delegate; 038 039 public NotElementExpression( ElementExpression delegate ) 040 { 041 this.delegate = delegate; 042 } 043 044 @Override 045 public boolean applies( PlannerContext plannerContext, ElementGraph elementGraph, FlowElement flowElement ) 046 { 047 return !delegate.applies( plannerContext, elementGraph, flowElement ); 048 } 049 050 @Override 051 public ElementCapture getCapture() 052 { 053 return delegate.getCapture(); 054 } 055 056 @Override 057 public String toString() 058 { 059 final StringBuilder sb = new StringBuilder( "Not{" ); 060 sb.append( delegate ); 061 sb.append( '}' ); 062 return sb.toString(); 063 } 064 }