001/* 002 * (C) Copyright 2007 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Nuxeo - initial API and implementation 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.ecm.core.search.api.client.querymodel; 023 024/** 025 * A very minimal escaper: does double quotes (putting just one is incorrect), +, - and ! 026 * 027 * @author <a href="mailto:gracinet@nuxeo.com">Georges Racinet</a> 028 */ 029// XXX this escaper does not seem to be doing an accurate job for VCS 030public class LuceneMinimalEscaper implements Escaper { 031 032 @Override 033 public String escape(String s) { 034 StringBuilder sb = new StringBuilder(); 035 for (int i = 0; i < s.length(); i++) { 036 char c = s.charAt(i); 037 if (c == '+' || c == '-' || c == '!' || c == '"') { 038 sb.append('\\'); 039 } 040 sb.append(c); 041 } 042 return sb.toString(); 043 } 044 045}