001/* 002 * (C) Copyright 2007 Nuxeo SAS (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * Nuxeo - initial API and implementation 016 * 017 * $Id$ 018 */ 019 020package org.nuxeo.ecm.core.search.api.client.querymodel; 021 022/** 023 * A very minimal escaper: does double quotes (putting just one is incorrect), +, - and ! 024 * 025 * @author <a href="mailto:gracinet@nuxeo.com">Georges Racinet</a> 026 */ 027// XXX this escaper does not seem to be doing an accurate job for VCS 028public class LuceneMinimalEscaper implements Escaper { 029 030 @Override 031 public String escape(String s) { 032 StringBuilder sb = new StringBuilder(); 033 for (int i = 0; i < s.length(); i++) { 034 char c = s.charAt(i); 035 if (c == '+' || c == '-' || c == '!' || c == '"') { 036 sb.append('\\'); 037 } 038 sb.append(c); 039 } 040 return sb.toString(); 041 } 042 043}