| /* |
| * 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.solr.handler.dataimport; |
| |
| import static org.apache.solr.handler.dataimport.DataImportHandlerException.SEVERE; |
| |
| import java.util.List; |
| |
| /** |
| * <p> Escapes values in SQL queries. It escapes the value of the given expression |
| * by replacing all occurrences of single-quotes by two single-quotes and similarily |
| * for double-quotes </p> |
| */ |
| public class SqlEscapingEvaluator extends Evaluator { |
| @Override |
| public String evaluate(String expression, Context context) { |
| List<Object> l = parseParams(expression, context.getVariableResolver()); |
| if (l.size() != 1) { |
| throw new DataImportHandlerException(SEVERE, "'escapeSql' must have at least one parameter "); |
| } |
| String s = l.get(0).toString(); |
| // escape single quote with two single quotes, double quote |
| // with two doule quotes, and backslash with double backslash. |
| // See: http://dev.mysql.com/doc/refman/4.1/en/mysql-real-escape-string.html |
| return s.replaceAll("'", "''").replaceAll("\"", "\"\"").replaceAll("\\\\", "\\\\\\\\"); |
| } |
| } |