1 |
1831
|
tao
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/**
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2 |
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* '$RCSfile$'
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3 |
2357
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sgarg
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* Purpose: A Class that represents a structured query, and can be
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4 |
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* constructed from an XML serialization conforming to
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5 |
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* pathquery.dtd. The printSQL() method can be used to print
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6 |
1831
|
tao
|
* a SQL serialization of the query.
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7 |
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* Copyright: 2000 Regents of the University of California and the
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8 |
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* National Center for Ecological Analysis and Synthesis
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9 |
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* Authors: Matt Jones
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*
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* '$Author$'
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* '$Date$'
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* '$Revision$'
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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24 |
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package edu.ucsb.nceas.metacat;
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31 |
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32 |
6020
|
leinfelder
|
import java.util.Calendar;
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33 |
1831
|
tao
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import java.util.Vector;
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34 |
6020
|
leinfelder
|
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35 |
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import javax.xml.bind.DatatypeConverter;
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36 |
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37 |
3235
|
sledge
|
import org.apache.log4j.Logger;
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38 |
1831
|
tao
|
|
39 |
5015
|
daigle
|
import edu.ucsb.nceas.metacat.shared.MetacatUtilException;
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40 |
4812
|
daigle
|
import edu.ucsb.nceas.metacat.util.SystemUtil;
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41 |
4080
|
daigle
|
|
42 |
1831
|
tao
|
/** a utility class that represents a single term in a query */
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43 |
2068
|
jones
|
public class QueryTerm
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44 |
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{
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45 |
3235
|
sledge
|
private static Logger log = Logger.getLogger(QueryTerm.class);
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46 |
2068
|
jones
|
|
47 |
1831
|
tao
|
private boolean casesensitive = false;
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48 |
2068
|
jones
|
|
49 |
1831
|
tao
|
private String searchmode = null;
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50 |
2068
|
jones
|
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51 |
1831
|
tao
|
private String value = null;
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52 |
2068
|
jones
|
|
53 |
1831
|
tao
|
private String pathexpr = null;
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54 |
2068
|
jones
|
|
55 |
1831
|
tao
|
private boolean percentageSymbol = false;
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56 |
2068
|
jones
|
|
57 |
1831
|
tao
|
private int countPercentageSearchItem = 0;
|
58 |
3238
|
tao
|
|
59 |
3311
|
tao
|
private boolean inUnionGroup = false;
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60 |
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61 |
3238
|
tao
|
public static final String CONTAINS = "contains";
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62 |
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63 |
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public static final String EQUALS = "equals";
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64 |
1831
|
tao
|
|
65 |
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/**
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66 |
2068
|
jones
|
* Construct a new instance of a query term for a free text search (using
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67 |
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* the value only)
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68 |
2357
|
sgarg
|
*
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69 |
2068
|
jones
|
* @param casesensitive
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70 |
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* flag indicating whether case is used to match
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71 |
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* @param searchmode
|
72 |
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* determines what kind of substring match is performed (one of
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73 |
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* starts-with|ends-with|contains|matches-exactly)
|
74 |
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* @param value
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75 |
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* the text value to match
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76 |
1831
|
tao
|
*/
|
77 |
2068
|
jones
|
public QueryTerm(boolean casesensitive, String searchmode, String value)
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78 |
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{
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79 |
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this.casesensitive = casesensitive;
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80 |
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this.searchmode = searchmode;
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81 |
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this.value = value;
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82 |
1831
|
tao
|
}
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83 |
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84 |
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/**
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85 |
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* Construct a new instance of a query term for a structured search
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86 |
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* (matching the value only for those nodes in the pathexpr)
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87 |
2357
|
sgarg
|
*
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88 |
2068
|
jones
|
* @param casesensitive
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89 |
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* flag indicating whether case is used to match
|
90 |
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* @param searchmode
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* determines what kind of substring match is performed (one of
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92 |
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* starts-with|ends-with|contains|matches-exactly)
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93 |
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* @param value
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94 |
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* the text value to match
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95 |
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* @param pathexpr
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96 |
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* the hierarchical path to the nodes to be searched
|
97 |
1831
|
tao
|
*/
|
98 |
2068
|
jones
|
public QueryTerm(boolean casesensitive, String searchmode, String value,
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99 |
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String pathexpr)
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100 |
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{
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101 |
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this(casesensitive, searchmode, value);
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102 |
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this.pathexpr = pathexpr;
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103 |
1831
|
tao
|
}
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104 |
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105 |
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/** determine if the QueryTerm is case sensitive */
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106 |
2068
|
jones
|
public boolean isCaseSensitive()
|
107 |
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{
|
108 |
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return casesensitive;
|
109 |
1831
|
tao
|
}
|
110 |
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111 |
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/** get the searchmode parameter */
|
112 |
2068
|
jones
|
public String getSearchMode()
|
113 |
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{
|
114 |
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return searchmode;
|
115 |
1831
|
tao
|
}
|
116 |
2068
|
jones
|
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117 |
1831
|
tao
|
/** get the Value parameter */
|
118 |
2068
|
jones
|
public String getValue()
|
119 |
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{
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120 |
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return value;
|
121 |
1831
|
tao
|
}
|
122 |
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123 |
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/** get the path expression parameter */
|
124 |
2068
|
jones
|
public String getPathExpression()
|
125 |
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{
|
126 |
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return pathexpr;
|
127 |
1831
|
tao
|
}
|
128 |
2068
|
jones
|
|
129 |
|
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/** get the percentage count for one query term */
|
130 |
1831
|
tao
|
public int getPercentageSymbolCount()
|
131 |
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{
|
132 |
2068
|
jones
|
return countPercentageSearchItem;
|
133 |
1831
|
tao
|
}
|
134 |
3311
|
tao
|
|
135 |
|
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/**
|
136 |
|
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* Set the query term in a union group
|
137 |
|
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* @param inUnionGroup
|
138 |
|
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*/
|
139 |
|
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public void setInUnionGroup (boolean inUnionGroup)
|
140 |
|
|
{
|
141 |
|
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this.inUnionGroup = inUnionGroup;
|
142 |
|
|
}
|
143 |
|
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|
144 |
|
|
/**
|
145 |
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* If this query group in Union group
|
146 |
|
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* @return
|
147 |
|
|
*/
|
148 |
|
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public boolean isInUnionGroup()
|
149 |
|
|
{
|
150 |
|
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return this.inUnionGroup;
|
151 |
|
|
}
|
152 |
1831
|
tao
|
|
153 |
|
|
/**
|
154 |
|
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* create a SQL serialization of the query that this instance represents
|
155 |
|
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*/
|
156 |
2068
|
jones
|
public String printSQL(boolean useXMLIndex)
|
157 |
|
|
{
|
158 |
|
|
StringBuffer self = new StringBuffer();
|
159 |
1831
|
tao
|
|
160 |
2068
|
jones
|
// Uppercase the search string if case match is not important
|
161 |
|
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String casevalue = null;
|
162 |
|
|
String nodedataterm = null;
|
163 |
2654
|
sgarg
|
boolean notEqual = false;
|
164 |
2068
|
jones
|
if (casesensitive) {
|
165 |
|
|
nodedataterm = "nodedata";
|
166 |
|
|
casevalue = value;
|
167 |
|
|
} else {
|
168 |
|
|
nodedataterm = "UPPER(nodedata)";
|
169 |
|
|
casevalue = value.toUpperCase();
|
170 |
|
|
}
|
171 |
1831
|
tao
|
|
172 |
2068
|
jones
|
// Add appropriate wildcards to search string
|
173 |
|
|
String searchexpr = null;
|
174 |
|
|
if (searchmode.equals("starts-with")) {
|
175 |
3053
|
jones
|
searchexpr = nodedataterm + " LIKE '" + casevalue + "%' ";
|
176 |
2068
|
jones
|
} else if (searchmode.equals("ends-with")) {
|
177 |
3053
|
jones
|
searchexpr = nodedataterm + " LIKE '%" + casevalue + "' ";
|
178 |
2068
|
jones
|
} else if (searchmode.equals("contains")) {
|
179 |
|
|
if (!casevalue.equals("%")) {
|
180 |
3053
|
jones
|
searchexpr = nodedataterm + " LIKE '%" + casevalue + "%' ";
|
181 |
2068
|
jones
|
} else {
|
182 |
3053
|
jones
|
searchexpr = nodedataterm + " LIKE '" + casevalue + "' ";
|
183 |
2068
|
jones
|
// find percentage symbol
|
184 |
|
|
percentageSymbol = true;
|
185 |
|
|
}
|
186 |
|
|
} else if (searchmode.equals("not-contains")) {
|
187 |
2654
|
sgarg
|
notEqual = true;
|
188 |
3053
|
jones
|
searchexpr = nodedataterm + " LIKE '%" + casevalue + "%' ";
|
189 |
2068
|
jones
|
} else if (searchmode.equals("equals")) {
|
190 |
|
|
searchexpr = nodedataterm + " = '" + casevalue + "' ";
|
191 |
|
|
} else if (searchmode.equals("isnot-equal")) {
|
192 |
2654
|
sgarg
|
notEqual = true;
|
193 |
|
|
searchexpr = nodedataterm + " = '" + casevalue + "' ";
|
194 |
1831
|
tao
|
} else {
|
195 |
2068
|
jones
|
String oper = null;
|
196 |
|
|
if (searchmode.equals("greater-than")) {
|
197 |
|
|
oper = ">";
|
198 |
2357
|
sgarg
|
nodedataterm = "nodedatanumerical";
|
199 |
2068
|
jones
|
} else if (searchmode.equals("greater-than-equals")) {
|
200 |
|
|
oper = ">=";
|
201 |
2357
|
sgarg
|
nodedataterm = "nodedatanumerical";
|
202 |
2068
|
jones
|
} else if (searchmode.equals("less-than")) {
|
203 |
|
|
oper = "<";
|
204 |
2357
|
sgarg
|
nodedataterm = "nodedatanumerical";
|
205 |
2068
|
jones
|
} else if (searchmode.equals("less-than-equals")) {
|
206 |
|
|
oper = "<=";
|
207 |
2357
|
sgarg
|
nodedataterm = "nodedatanumerical";
|
208 |
2068
|
jones
|
} else {
|
209 |
|
|
System.out
|
210 |
|
|
.println("NOT expected case. NOT recognized operator: "
|
211 |
|
|
+ searchmode);
|
212 |
|
|
return null;
|
213 |
|
|
}
|
214 |
6012
|
leinfelder
|
|
215 |
6020
|
leinfelder
|
|
216 |
2068
|
jones
|
try {
|
217 |
6020
|
leinfelder
|
// it is number; numeric comparison
|
218 |
|
|
searchexpr = nodedataterm + " " + oper + " " + new Double(casevalue) + " ";
|
219 |
|
|
} catch (NumberFormatException nfe) {
|
220 |
|
|
// is it a date?
|
221 |
|
|
try {
|
222 |
|
|
// try ISO 8601 formats
|
223 |
|
|
Calendar dataDateValue = DatatypeConverter.parseDateTime(casevalue);
|
224 |
|
|
String lexicalString = DatatypeConverter.printDateTime(dataDateValue);
|
225 |
|
|
nodedataterm = "nodedatadate";
|
226 |
|
|
searchexpr =
|
227 |
|
|
nodedataterm + " " + oper + " '" + lexicalString + "' ";
|
228 |
|
|
} catch (Exception pe) {
|
229 |
|
|
// these are characters; character comparison
|
230 |
|
|
searchexpr = nodedataterm + " " + oper + " '" + casevalue + "' ";
|
231 |
|
|
}
|
232 |
|
|
}
|
233 |
1831
|
tao
|
}
|
234 |
|
|
|
235 |
2068
|
jones
|
|
236 |
2522
|
sgarg
|
// to check xml_path_index can be used
|
237 |
|
|
boolean usePathIndex = false;
|
238 |
|
|
|
239 |
|
|
// if pathexpr has been specified in metacat.properties for indexing
|
240 |
|
|
if(pathexpr != null){
|
241 |
4812
|
daigle
|
try {
|
242 |
|
|
if (SystemUtil.getPathsForIndexing().contains(pathexpr)) {
|
243 |
|
|
usePathIndex = true;
|
244 |
|
|
}
|
245 |
4854
|
daigle
|
} catch (MetacatUtilException ue) {
|
246 |
4812
|
daigle
|
log.warn("Could not get index paths: " + ue.getMessage());
|
247 |
|
|
}
|
248 |
2522
|
sgarg
|
}
|
249 |
3786
|
tao
|
|
250 |
2522
|
sgarg
|
if(usePathIndex){
|
251 |
|
|
// using xml_path_index table.....
|
252 |
3329
|
tao
|
if(notEqual == true ){
|
253 |
|
|
if (!inUnionGroup)
|
254 |
|
|
{
|
255 |
|
|
self.append("SELECT DISTINCT docid from xml_path_index WHERE");
|
256 |
|
|
self.append(" docid NOT IN (Select docid FROM xml_path_index WHERE ");
|
257 |
|
|
self.append(searchexpr);
|
258 |
|
|
self.append("AND path LIKE '" + pathexpr + "') ");
|
259 |
|
|
}
|
260 |
|
|
else
|
261 |
|
|
{
|
262 |
|
|
//if this is in union group we need to use "OR" to modify query
|
263 |
|
|
self.append("("+searchexpr);
|
264 |
|
|
self.append("AND path LIKE '" + pathexpr + "') ");
|
265 |
|
|
}
|
266 |
2654
|
sgarg
|
} else {
|
267 |
3329
|
tao
|
if (!inUnionGroup)
|
268 |
|
|
{
|
269 |
|
|
self.append("SELECT DISTINCT docid FROM xml_path_index WHERE ");
|
270 |
|
|
self.append(searchexpr);
|
271 |
|
|
self.append("AND path LIKE '" + pathexpr + "' ");
|
272 |
|
|
}
|
273 |
|
|
else
|
274 |
|
|
{
|
275 |
|
|
//if this is in union group we need to use "OR" to modify query
|
276 |
|
|
self.append("("+searchexpr);
|
277 |
|
|
self.append("AND path LIKE '" + pathexpr + "') ");
|
278 |
|
|
}
|
279 |
2654
|
sgarg
|
}
|
280 |
2522
|
sgarg
|
|
281 |
|
|
} else {
|
282 |
|
|
// using xml_nodes and xml_index tables
|
283 |
|
|
|
284 |
2654
|
sgarg
|
if(notEqual == true){
|
285 |
|
|
self.append("SELECT DISTINCT docid from xml_nodes WHERE");
|
286 |
|
|
self.append(" docid NOT IN (Select docid FROM xml_nodes WHERE ");
|
287 |
|
|
} else {
|
288 |
2693
|
sgarg
|
self.append("(SELECT DISTINCT docid FROM xml_nodes WHERE ");
|
289 |
2654
|
sgarg
|
}
|
290 |
|
|
self.append(searchexpr);
|
291 |
|
|
|
292 |
2522
|
sgarg
|
if (pathexpr != null) {
|
293 |
3786
|
tao
|
String path = pathexpr;
|
294 |
2522
|
sgarg
|
// use XML Index
|
295 |
|
|
if (useXMLIndex) {
|
296 |
|
|
if (!hasAttributeInPath(pathexpr)) {
|
297 |
|
|
// without attributes in path
|
298 |
|
|
self.append("AND parentnodeid IN ");
|
299 |
5093
|
cjones
|
self.append(
|
300 |
|
|
"(SELECT nodeid FROM xml_index WHERE path LIKE "
|
301 |
|
|
+ "'" + path + "') ");
|
302 |
2654
|
sgarg
|
} else {
|
303 |
2522
|
sgarg
|
// has a attribute in path
|
304 |
|
|
String attributeName = QuerySpecification
|
305 |
2068
|
jones
|
.getAttributeName(pathexpr);
|
306 |
2522
|
sgarg
|
self.append(
|
307 |
|
|
"AND nodetype LIKE 'ATTRIBUTE' AND nodename LIKE '"
|
308 |
|
|
+ attributeName + "' ");
|
309 |
|
|
// and the path expression includes element content other than
|
310 |
|
|
// just './' or '../'
|
311 |
|
|
if ( (!pathexpr.startsWith(QuerySpecification.
|
312 |
|
|
ATTRIBUTESYMBOL)) &&
|
313 |
|
|
(!pathexpr.startsWith("./" +
|
314 |
|
|
QuerySpecification.ATTRIBUTESYMBOL)) &&
|
315 |
|
|
(!pathexpr.startsWith("../" +
|
316 |
|
|
QuerySpecification.ATTRIBUTESYMBOL))) {
|
317 |
2068
|
jones
|
|
318 |
2522
|
sgarg
|
self.append("AND parentnodeid IN ");
|
319 |
3786
|
tao
|
path = QuerySpecification
|
320 |
2522
|
sgarg
|
.newPathExpressionWithOutAttribute(pathexpr);
|
321 |
5093
|
cjones
|
self.append(
|
322 |
|
|
"(SELECT nodeid FROM xml_index WHERE path LIKE "
|
323 |
|
|
+ "'" + path + "') ");
|
324 |
2522
|
sgarg
|
}
|
325 |
2459
|
cjones
|
}
|
326 |
2068
|
jones
|
}
|
327 |
2522
|
sgarg
|
else {
|
328 |
|
|
// without using XML Index; using nested statements instead
|
329 |
3771
|
tao
|
//self.append("AND parentnodeid IN ");
|
330 |
|
|
self.append("AND ");
|
331 |
2522
|
sgarg
|
self.append(useNestedStatements(pathexpr));
|
332 |
|
|
}
|
333 |
2068
|
jones
|
}
|
334 |
2522
|
sgarg
|
else if ( (value.trim()).equals("%")) {
|
335 |
|
|
//if pathexpr is null and search value is %, is a
|
336 |
|
|
// percentageSearchItem
|
337 |
|
|
// the count number will be increase one
|
338 |
|
|
countPercentageSearchItem++;
|
339 |
2068
|
jones
|
|
340 |
2522
|
sgarg
|
}
|
341 |
2654
|
sgarg
|
self.append(") ");
|
342 |
1831
|
tao
|
}
|
343 |
|
|
|
344 |
2068
|
jones
|
return self.toString();
|
345 |
1831
|
tao
|
}
|
346 |
2068
|
jones
|
|
347 |
|
|
/** A method to judge if a path have attribute */
|
348 |
1831
|
tao
|
private boolean hasAttributeInPath(String path)
|
349 |
|
|
{
|
350 |
2068
|
jones
|
if (path.indexOf(QuerySpecification.ATTRIBUTESYMBOL) != -1) {
|
351 |
|
|
return true;
|
352 |
|
|
} else {
|
353 |
|
|
return false;
|
354 |
|
|
}
|
355 |
1831
|
tao
|
}
|
356 |
2068
|
jones
|
|
357 |
3311
|
tao
|
|
358 |
2069
|
jones
|
public static String useNestedStatements(String pathexpr)
|
359 |
1831
|
tao
|
{
|
360 |
3235
|
sledge
|
log.info("useNestedStatements()");
|
361 |
|
|
log.info("pathexpr: " + pathexpr);
|
362 |
3771
|
tao
|
String elementPrefix = " parentnodeid IN ";
|
363 |
|
|
String attributePrefix = " nodeid IN ";
|
364 |
|
|
boolean lastOneIsAttribute = false;
|
365 |
3235
|
sledge
|
StringBuffer nestedStmts = new StringBuffer();
|
366 |
|
|
String path = pathexpr.trim();
|
367 |
3771
|
tao
|
String sql = "";
|
368 |
1831
|
tao
|
|
369 |
3235
|
sledge
|
if (path.indexOf('/') == 0)
|
370 |
|
|
{
|
371 |
|
|
nestedStmts.append("AND parentnodeid = rootnodeid ");
|
372 |
|
|
path = path.substring(1).trim();
|
373 |
|
|
}
|
374 |
|
|
|
375 |
|
|
do
|
376 |
|
|
{
|
377 |
|
|
int inx = path.indexOf('/');
|
378 |
|
|
int predicateStart = -1;
|
379 |
|
|
int predicateEnd;
|
380 |
|
|
String node;
|
381 |
|
|
Vector predicates = new Vector();
|
382 |
|
|
|
383 |
|
|
// extract predicates
|
384 |
|
|
predicateStart = path.indexOf(QuerySpecification.PREDICATE_START, predicateStart + 1);
|
385 |
|
|
|
386 |
|
|
// any predicates in this node?
|
387 |
|
|
if (inx != -1 && (predicateStart == -1 || predicateStart > inx))
|
388 |
|
|
{
|
389 |
|
|
// no
|
390 |
|
|
node = path.substring(0, inx).trim();
|
391 |
|
|
path = path.substring(inx + 1).trim();
|
392 |
|
|
}
|
393 |
|
|
else if (predicateStart == -1)
|
394 |
|
|
{
|
395 |
|
|
// no and it's the last node
|
396 |
|
|
node = path;
|
397 |
3771
|
tao
|
if (node != null && node.indexOf(QuerySpecification.ATTRIBUTESYMBOL) != -1)
|
398 |
|
|
{
|
399 |
|
|
lastOneIsAttribute = true;
|
400 |
|
|
node = removeAttributeSymbol(node);
|
401 |
|
|
}
|
402 |
3235
|
sledge
|
path = "";
|
403 |
|
|
}
|
404 |
|
|
else
|
405 |
|
|
{
|
406 |
|
|
// yes
|
407 |
|
|
node = path.substring(0, predicateStart).trim();
|
408 |
|
|
path = path.substring(predicateStart);
|
409 |
|
|
predicateStart = 0;
|
410 |
|
|
|
411 |
|
|
while (predicateStart == 0)
|
412 |
|
|
{
|
413 |
|
|
predicateEnd = path.indexOf(QuerySpecification.PREDICATE_END,
|
414 |
|
|
predicateStart);
|
415 |
|
|
|
416 |
|
|
if (predicateEnd == -1)
|
417 |
|
|
{
|
418 |
|
|
log.warn("useNestedStatements(): ");
|
419 |
|
|
log.warn(" Invalid path: " + pathexpr);
|
420 |
|
|
return "";
|
421 |
|
|
}
|
422 |
|
|
|
423 |
|
|
predicates.add(path.substring(1, predicateEnd).trim());
|
424 |
|
|
path = path.substring(predicateEnd + 1).trim();
|
425 |
|
|
inx = path.indexOf('/');
|
426 |
|
|
predicateStart = path.indexOf(QuerySpecification.PREDICATE_START);
|
427 |
|
|
}
|
428 |
|
|
|
429 |
|
|
if (inx == 0)
|
430 |
|
|
path = path.substring(1).trim();
|
431 |
|
|
else if (!path.equals(""))
|
432 |
|
|
{
|
433 |
|
|
log.warn("useNestedStatements(): ");
|
434 |
|
|
log.warn(" Invalid path: " + pathexpr);
|
435 |
|
|
return "";
|
436 |
|
|
}
|
437 |
|
|
}
|
438 |
|
|
|
439 |
|
|
nestedStmts.insert(0, "' ").insert(0, node).insert(0,
|
440 |
|
|
"(SELECT nodeid FROM xml_nodes WHERE nodename LIKE '");
|
441 |
|
|
|
442 |
|
|
// for the last statement: it is without " AND parentnodeid IN "
|
443 |
|
|
if (!path.equals(""))
|
444 |
|
|
nestedStmts.insert(0, "AND parentnodeid IN ");
|
445 |
|
|
|
446 |
|
|
if (predicates.size() > 0)
|
447 |
|
|
{
|
448 |
|
|
for (int n = 0; n < predicates.size(); n++)
|
449 |
|
|
{
|
450 |
|
|
String predSQL = predicate2SQL((String) predicates.get(n));
|
451 |
|
|
|
452 |
|
|
if (predSQL.equals(""))
|
453 |
|
|
return "";
|
454 |
|
|
|
455 |
|
|
nestedStmts.append(predSQL).append(' ');
|
456 |
|
|
}
|
457 |
|
|
}
|
458 |
|
|
|
459 |
|
|
nestedStmts.append(") ");
|
460 |
|
|
}
|
461 |
|
|
while (!path.equals(""));
|
462 |
3771
|
tao
|
if (lastOneIsAttribute)
|
463 |
|
|
{
|
464 |
|
|
sql = attributePrefix+nestedStmts.toString();
|
465 |
|
|
}
|
466 |
|
|
else
|
467 |
|
|
{
|
468 |
|
|
sql = elementPrefix+nestedStmts.toString();
|
469 |
|
|
}
|
470 |
|
|
return sql;
|
471 |
3235
|
sledge
|
}
|
472 |
3771
|
tao
|
|
473 |
|
|
|
474 |
|
|
/*
|
475 |
|
|
* Removes @ symbol from path. For example, if path is @entity, entity will be returned.
|
476 |
|
|
* If path is entity, entity will be returned.
|
477 |
|
|
*/
|
478 |
|
|
private static String removeAttributeSymbol(String path)
|
479 |
|
|
{
|
480 |
|
|
String newPath ="";
|
481 |
|
|
log.debug("Original string before removing @ is " + path);
|
482 |
|
|
if (path != null)
|
483 |
|
|
{
|
484 |
|
|
|
485 |
|
|
int attribute = path.indexOf(QuerySpecification.ATTRIBUTESYMBOL);
|
486 |
|
|
if (attribute != -1)
|
487 |
|
|
{
|
488 |
|
|
// has attribute symbol. Reomve it and return the remained part.
|
489 |
|
|
try
|
490 |
|
|
{
|
491 |
|
|
newPath = path.substring(attribute + 1).trim();
|
492 |
|
|
}
|
493 |
|
|
catch (Exception e)
|
494 |
|
|
{
|
495 |
|
|
newPath = path;
|
496 |
|
|
}
|
497 |
|
|
}
|
498 |
|
|
else
|
499 |
|
|
{
|
500 |
|
|
// doesn't have attribute symbol. Return original string
|
501 |
|
|
newPath = path;
|
502 |
|
|
}
|
503 |
|
|
}
|
504 |
|
|
else
|
505 |
|
|
{
|
506 |
|
|
// if is null, return null;
|
507 |
|
|
newPath = path;
|
508 |
|
|
}
|
509 |
|
|
log.debug("String after removing @ is " + newPath);
|
510 |
|
|
return newPath;
|
511 |
|
|
|
512 |
|
|
}
|
513 |
3235
|
sledge
|
|
514 |
1831
|
tao
|
/**
|
515 |
3235
|
sledge
|
*
|
516 |
|
|
*/
|
517 |
|
|
public static String predicate2SQL(String predicate)
|
518 |
|
|
{
|
519 |
|
|
String path = predicate.trim();
|
520 |
|
|
int equals = path.indexOf('=');
|
521 |
|
|
String literal = null;
|
522 |
|
|
|
523 |
|
|
if (equals != -1)
|
524 |
|
|
{
|
525 |
|
|
literal = path.substring(equals + 1).trim();
|
526 |
|
|
path = path.substring(0, equals).trim();
|
527 |
|
|
int sQuote = literal.indexOf('\'');
|
528 |
|
|
int dQuote = literal.indexOf('"');
|
529 |
|
|
|
530 |
|
|
if (sQuote == -1 && dQuote == -1)
|
531 |
|
|
{
|
532 |
|
|
log.warn("predicate2SQL(): ");
|
533 |
|
|
log.warn(" Invalid or unsupported predicate: " + predicate);
|
534 |
|
|
return "";
|
535 |
|
|
}
|
536 |
|
|
|
537 |
|
|
if (sQuote == -1 &&
|
538 |
|
|
(dQuote != 0 ||
|
539 |
|
|
literal.indexOf('"', dQuote + 1) != literal.length() - 1))
|
540 |
|
|
{
|
541 |
|
|
log.warn("predicate2SQL(): ");
|
542 |
|
|
log.warn(" Invalid or unsupported predicate: " + predicate);
|
543 |
|
|
return "";
|
544 |
|
|
}
|
545 |
|
|
|
546 |
|
|
if (sQuote != 0 ||
|
547 |
|
|
literal.indexOf('\'', sQuote + 1) != literal.length() - 1)
|
548 |
|
|
{
|
549 |
|
|
log.warn("predicate2SQL(): ");
|
550 |
|
|
log.warn(" Invalid or unsupported predicate: " + predicate);
|
551 |
|
|
return "";
|
552 |
|
|
}
|
553 |
|
|
}
|
554 |
|
|
|
555 |
|
|
StringBuffer sql = new StringBuffer();
|
556 |
|
|
int attribute = path.indexOf('@');
|
557 |
|
|
|
558 |
|
|
if (attribute == -1)
|
559 |
|
|
{
|
560 |
|
|
if (literal != null)
|
561 |
|
|
{
|
562 |
|
|
sql.append("AND nodeid IN (SELECT parentnodeid FROM xml_nodes WHERE nodetype = 'TEXT' AND nodedata LIKE ")
|
563 |
|
|
.append(literal).append(")");
|
564 |
|
|
}
|
565 |
|
|
}
|
566 |
|
|
else
|
567 |
|
|
{
|
568 |
|
|
sql.append(
|
569 |
|
|
"AND nodeid IN (SELECT parentnodeid FROM xml_nodes WHERE nodetype = 'ATTRIBUTE' AND nodename LIKE '")
|
570 |
|
|
.append(path.substring(attribute + 1).trim()).append("' ");
|
571 |
|
|
|
572 |
|
|
if (literal != null)
|
573 |
|
|
{
|
574 |
|
|
sql.append("AND nodedata LIKE ").append(literal);
|
575 |
|
|
}
|
576 |
|
|
|
577 |
|
|
sql.append(")");
|
578 |
|
|
path = path.substring(0, attribute).trim();
|
579 |
|
|
|
580 |
|
|
if (path.endsWith("/"))
|
581 |
|
|
path = path.substring(0, path.length() - 1).trim();
|
582 |
|
|
else
|
583 |
|
|
{
|
584 |
|
|
if (!path.equals(""))
|
585 |
|
|
{
|
586 |
|
|
log.warn("predicate2SQL(): ");
|
587 |
|
|
log.warn(" Invalid or unsupported predicate: " + predicate);
|
588 |
|
|
return "";
|
589 |
|
|
}
|
590 |
|
|
}
|
591 |
|
|
}
|
592 |
|
|
|
593 |
|
|
while (!path.equals(""))
|
594 |
|
|
{
|
595 |
|
|
int ndx = path.lastIndexOf('/');
|
596 |
|
|
int predicateEnd = -1;
|
597 |
|
|
int predicateStart;
|
598 |
|
|
String node;
|
599 |
|
|
|
600 |
|
|
if (ndx != -1)
|
601 |
|
|
{
|
602 |
|
|
node = path.substring(ndx + 1).trim();
|
603 |
|
|
path = path.substring(0, ndx).trim();
|
604 |
|
|
}
|
605 |
|
|
else
|
606 |
|
|
{
|
607 |
|
|
node = path;
|
608 |
|
|
path = "";
|
609 |
|
|
}
|
610 |
|
|
|
611 |
|
|
if (!node.equals(""))
|
612 |
|
|
sql.insert(0, "' ").insert(0, node)
|
613 |
|
|
.insert(0, "(SELECT parentnodeid FROM xml_nodes WHERE nodename LIKE '").append(") ");
|
614 |
|
|
else if (!path.equals(""))
|
615 |
|
|
{
|
616 |
|
|
log.warn("predicate2SQL(): ");
|
617 |
|
|
log.warn(" Invalid or unsupported predicate: " + predicate);
|
618 |
|
|
return "";
|
619 |
|
|
}
|
620 |
|
|
|
621 |
|
|
if (path.equals(""))
|
622 |
|
|
{
|
623 |
|
|
sql.insert(0,
|
624 |
|
|
node.equals("") ? "AND rootnodeid IN " : "AND nodeid IN ");
|
625 |
|
|
}
|
626 |
|
|
else
|
627 |
|
|
{
|
628 |
|
|
sql.append("AND nodeid IN ");
|
629 |
|
|
}
|
630 |
|
|
}
|
631 |
|
|
|
632 |
|
|
return sql.toString();
|
633 |
|
|
}
|
634 |
|
|
|
635 |
|
|
/**
|
636 |
1831
|
tao
|
* create a String description of the query that this instance represents.
|
637 |
|
|
* This should become a way to get the XML serialization of the query.
|
638 |
|
|
*/
|
639 |
2068
|
jones
|
public String toString()
|
640 |
|
|
{
|
641 |
1831
|
tao
|
|
642 |
2068
|
jones
|
return this.printSQL(true);
|
643 |
1831
|
tao
|
}
|
644 |
3224
|
tao
|
|
645 |
|
|
/**
|
646 |
|
|
* Compare two query terms to see if they have same search value.
|
647 |
|
|
* @param term
|
648 |
|
|
* @return
|
649 |
|
|
*/
|
650 |
|
|
public boolean hasSameSearchValue(QueryTerm term)
|
651 |
|
|
{
|
652 |
|
|
boolean same = false;
|
653 |
|
|
if (term != null)
|
654 |
|
|
{
|
655 |
|
|
String searchValue = term.getValue();
|
656 |
|
|
if (searchValue != null && this.value != null)
|
657 |
|
|
{
|
658 |
|
|
if (searchValue.equalsIgnoreCase(this.value))
|
659 |
|
|
{
|
660 |
|
|
same = true;
|
661 |
|
|
}
|
662 |
|
|
}
|
663 |
|
|
}
|
664 |
|
|
return same;
|
665 |
|
|
}
|
666 |
2068
|
jones
|
}
|