| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.pig.parser; |
| |
| import org.antlr.runtime.IntStream; |
| import org.apache.pig.newplan.logical.expression.ScalarExpression; |
| import org.apache.pig.newplan.logical.relational.LogicalRelationalOperator; |
| |
| public class InvalidScalarProjectionException extends PigRecognitionException { |
| private static final long serialVersionUID = 1L; |
| |
| private ScalarExpression scalarExpr; |
| private String msg; |
| |
| public InvalidScalarProjectionException(IntStream input, SourceLocation loc, |
| ScalarExpression expr) { |
| super( input, loc ); |
| this.scalarExpr = expr; |
| this.msg = null; |
| } |
| |
| /** |
| * Constructor that takes an additional string to be concatenated |
| * with the exception message |
| */ |
| public InvalidScalarProjectionException(IntStream input, SourceLocation loc, |
| ScalarExpression expr, String msg) { |
| super( input, loc ); |
| this.scalarExpr = expr; |
| this.msg = new String(msg); |
| } |
| |
| public String toString() { |
| return msgHeader() + "Invalid scalar projection: " + |
| ((LogicalRelationalOperator)scalarExpr.getImplicitReferencedOperator()).getAlias() + |
| ((msg!=null) ? msg : ""); |
| } |
| |
| } |