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.iso.expression;
022
023import java.util.Arrays;
024
025import cascading.flow.FlowElement;
026import cascading.flow.planner.PlannerContext;
027import cascading.flow.planner.graph.ElementGraph;
028
029/**
030 *
031 */
032public class OrElementExpression extends ElementExpression
033  {
034  public static ElementExpression or( ElementExpression... elementMatchers )
035    {
036    return new OrElementExpression( elementMatchers );
037    }
038
039  public static ElementExpression or( ElementCapture capture, ElementExpression... elementMatchers )
040    {
041    return new OrElementExpression( capture, elementMatchers );
042    }
043
044  ElementExpression[] matchers;
045
046  public OrElementExpression( ElementExpression... matchers )
047    {
048    this.matchers = matchers;
049    }
050
051  public OrElementExpression( ElementCapture capture, ElementExpression... matchers )
052    {
053    super( capture );
054    this.matchers = matchers;
055    }
056
057  @Override
058  public boolean applies( PlannerContext plannerContext, ElementGraph elementGraph, FlowElement flowElement )
059    {
060    for( ElementExpression matcher : matchers )
061      {
062      if( matcher.applies( plannerContext, elementGraph, flowElement ) )
063        return true;
064      }
065
066    return false;
067    }
068
069  @Override
070  public String toString()
071    {
072    final StringBuilder sb = new StringBuilder( "Or{" );
073    sb.append( Arrays.toString( matchers ) );
074    sb.append( '}' );
075    return sb.toString();
076    }
077  }