001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.search;
016    
017    import com.liferay.portal.kernel.util.CharPool;
018    import com.liferay.portal.kernel.util.StringPool;
019    import com.liferay.portal.kernel.util.StringUtil;
020    import com.liferay.portal.kernel.util.Validator;
021    
022    import java.util.ArrayList;
023    import java.util.HashMap;
024    import java.util.List;
025    import java.util.Map;
026    import java.util.regex.Pattern;
027    
028    /**
029     * @author Brian Wing Shun Chan
030     * @author Hugo Huijser
031     */
032    public abstract class BaseBooleanQueryImpl
033            extends BaseQueryImpl implements BooleanQuery {
034    
035            public void addTerms(String[] fields, String values) throws ParseException {
036                    if (Validator.isNull(values)) {
037                            return;
038                    }
039    
040                    if (fields == null) {
041                            fields = new String[0];
042                    }
043    
044                    for (String field : fields) {
045                            addTerm(field, values);
046                    }
047            }
048    
049            public void addTerms(String[] fields, String value, boolean like)
050                    throws ParseException {
051    
052                    if (Validator.isNull(value)) {
053                            return;
054                    }
055    
056                    for (String field : fields) {
057                            addTerm(field, value, like);
058                    }
059            }
060    
061            protected void addTerms(
062                            String[] fields, Map<String, List<String>> termFieldsValuesMap)
063                    throws ParseException {
064    
065                    for (String field : fields) {
066                            List<String> valuesList = termFieldsValuesMap.get(field);
067    
068                            for (String value : valuesList) {
069                                    addTerm(field, value);
070                            }
071                    }
072            }
073    
074            protected String getTermFieldRemainderValues(
075                    String field, String values, List<String> valuesList, String pattern,
076                    String replacement) {
077    
078                    if (Validator.isNull(values)) {
079                            return values;
080                    }
081    
082                    if (Validator.isNull(pattern) || Validator.isNull(replacement)) {
083                            return values;
084                    }
085    
086                    if (Validator.isNotNull(field)) {
087                            field += ":";
088                    }
089                    else {
090                            field = StringPool.BLANK;
091                    }
092    
093                    while (values.matches(pattern)) {
094                            String value = values.replaceAll(pattern, replacement);
095    
096                            valuesList.add(value);
097    
098                            String duplicate =
099                                    "(?i)\\s*" + Pattern.quote(field + value) + "\\s*";
100    
101                            values = values.replaceAll(duplicate, StringPool.SPACE);
102                            values = values.trim();
103                    }
104    
105                    return values;
106            }
107    
108            protected Map<String, List<String>> getTermFieldsValuesMap(
109                    String[] fields, String values) {
110    
111                    Map<String, List<String>> termFieldsValuesMap =
112                            new HashMap<String, List<String>>();
113    
114                    for (String field : fields) {
115                            List<String> valuesList = new ArrayList<String>();
116    
117                            values = getTermFieldRemainderValues(
118                                    field, values, valuesList,
119                                    "(?i)^.*" + field + ":([\"\'])(.+?)(\\1).*$", "$1$2$3");
120    
121                            values = getTermFieldRemainderValues(
122                                    field, values, valuesList,
123                                    "(?i)^.*" + field + ":([^\\s\"']*).*$", "$1");
124    
125                            termFieldsValuesMap.put(field, valuesList);
126                    }
127    
128                    values = values.trim();
129    
130                    List<String> valuesList = new ArrayList<String>();
131    
132                    if (Validator.isNotNull(values)) {
133                            values = getTermFieldRemainderValues(
134                                    null, values, valuesList,
135                                    "^[^\"\']*([\"\'])(.+?)(\\1)[^\"\']*$", "$1$2$3");
136    
137                            valuesList.add(values);
138                    }
139    
140                    termFieldsValuesMap.put("no_field", valuesList);
141    
142                    return termFieldsValuesMap;
143            }
144    
145            protected String[] parseKeywords(String values) {
146                    if (!values.contains(StringPool.QUOTE)) {
147                            return StringUtil.split(values, CharPool.SPACE);
148                    }
149    
150                    List<String> keywords = new ArrayList<String>();
151    
152                    while (values.length() > 0) {
153                            if (values.startsWith(StringPool.QUOTE)) {
154                                    values = values.substring(1);
155    
156                                    if (values.contains(StringPool.QUOTE)) {
157                                            int pos = values.indexOf(StringPool.QUOTE);
158    
159                                            keywords.add(values.substring(0, pos));
160    
161                                            values = values.substring(pos + 1);
162                                            values = values.trim();
163                                    }
164                            }
165                            else {
166                                    if (values.contains(StringPool.SPACE)) {
167                                            int pos = values.indexOf(StringPool.SPACE);
168    
169                                            keywords.add(values.substring(0, pos));
170    
171                                            values = values.substring(pos + 1);
172                                            values = values.trim();
173                                    }
174                                    else {
175                                            keywords.add(values);
176    
177                                            break;
178                                    }
179                            }
180                    }
181    
182                    return keywords.toArray(new String[keywords.size()]);
183            }
184    
185    }