001 /* 002 * Copyright (c) 2007-2014 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 */ 020 021 package cascading.flow.planner; 022 023 import cascading.flow.FlowElement; 024 import cascading.flow.FlowException; 025 import cascading.pipe.Pipe; 026 import cascading.tap.Tap; 027 import cascading.util.TraceUtil; 028 029 /** 030 * Class ElementGraphException is thrown during rendering of a pipe assembly to 031 * the Cascading internal "graph" representation. 032 */ 033 public class ElementGraphException extends FlowException 034 { 035 /** Field flowElement */ 036 private FlowElement flowElement; 037 038 /** Constructor ElementGraphException creates a new ElementGraphException instance. */ 039 public ElementGraphException() 040 { 041 } 042 043 public ElementGraphException( Pipe pipe, String message ) 044 { 045 this( (FlowElement) pipe, TraceUtil.formatTrace( pipe, message ) ); 046 } 047 048 public ElementGraphException( Tap tap, String message ) 049 { 050 this( (FlowElement) tap, TraceUtil.formatTrace( tap, message ) ); 051 } 052 053 /** 054 * Constructor ElementGraphException creates a new ElementGraphException instance. 055 * 056 * @param flowElement of type FlowElement 057 * @param message of type String 058 */ 059 public ElementGraphException( FlowElement flowElement, String message ) 060 { 061 super( message ); 062 this.flowElement = flowElement; 063 } 064 065 /** 066 * Constructor ElementGraphException creates a new ElementGraphException instance. 067 * 068 * @param flowElement of type FlowElement 069 * @param message of type String 070 * @param throwable of type Throwable 071 */ 072 public ElementGraphException( FlowElement flowElement, String message, Throwable throwable ) 073 { 074 super( message, throwable ); 075 this.flowElement = flowElement; 076 } 077 078 /** 079 * Constructor ElementGraphException creates a new ElementGraphException instance. 080 * 081 * @param string of type String 082 */ 083 public ElementGraphException( String string ) 084 { 085 super( string ); 086 } 087 088 /** 089 * Constructor ElementGraphException creates a new ElementGraphException instance. 090 * 091 * @param string of type String 092 * @param throwable of type Throwable 093 */ 094 public ElementGraphException( String string, Throwable throwable ) 095 { 096 super( string, throwable ); 097 } 098 099 /** 100 * Constructor ElementGraphException creates a new ElementGraphException instance. 101 * 102 * @param throwable of type Throwable 103 */ 104 public ElementGraphException( Throwable throwable ) 105 { 106 super( throwable ); 107 } 108 109 /** 110 * Method getFlowElement returns the flowElement of this ElementGraphException object. 111 * 112 * @return the flowElement (type FlowElement) of this ElementGraphException object. 113 */ 114 public FlowElement getFlowElement() 115 { 116 return flowElement; 117 } 118 119 Pipe getPipe() 120 { 121 if( flowElement instanceof Pipe ) 122 return (Pipe) flowElement; 123 124 return null; 125 } 126 }