svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libRemoteServices / src / org / gvsig / remoteclient / wfs / filters / AbstractFilter.java @ 34026
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1 | 7897 | jorpiell | |
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2 | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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3 | 31835 | jpiera | *
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4 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 2
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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19 | *
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20 | * For more information, contact:
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21 | *
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22 | * Generalitat Valenciana
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23 | * Conselleria d'Infraestructures i Transport
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24 | * Av. Blasco Ib??ez, 50
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25 | * 46010 VALENCIA
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26 | * SPAIN
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27 | *
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28 | * +34 963862235
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29 | * gvsig@gva.es
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30 | * www.gvsig.gva.es
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31 | *
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32 | * or
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33 | *
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34 | * IVER T.I. S.A
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35 | * Salamanca 50
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36 | * 46005 Valencia
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37 | * Spain
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38 | *
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39 | * +34 963163400
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40 | * dac@iver.es
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41 | */
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42 | 29680 | jpiera | package org.gvsig.remoteclient.wfs.filters; |
43 | 7897 | jorpiell | import java.io.ByteArrayInputStream; |
44 | import java.util.ArrayList; |
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45 | import java.util.Iterator; |
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46 | import java.util.StringTokenizer; |
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47 | import java.util.Vector; |
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48 | |||
49 | 29680 | jpiera | import org.gvsig.fmap.geom.Geometry; |
50 | 31835 | jpiera | import org.gvsig.fmap.geom.primitive.Envelope; |
51 | import org.gvsig.remoteclient.wfs.filters.operations.WFSEnvelopeFilterOperation; |
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52 | import org.gvsig.remoteclient.wfs.filters.operations.WFSGeometryFilterOperation; |
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53 | import org.gvsig.remoteclient.wfs.filters.operations.WFSSpatialFilterOperation; |
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54 | 29680 | jpiera | |
55 | 7897 | jorpiell | /**
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56 | * All classes that implement a "Query Language" must to inherit of
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57 | * this class
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58 | *
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59 | * @author Jorge Piera Llodra (piera_jor@gva.es)
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60 | */
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61 | 31835 | jpiera | public abstract class AbstractFilter implements Filter { |
62 | 7897 | jorpiell | private BinaryTree root;
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63 | private String currentClause; |
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64 | private ISQLExpressionFormat formatter;
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65 | 31835 | jpiera | private ArrayList spatialFilterOperations; |
66 | private ArrayList ids = null; |
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67 | |||
68 | public AbstractFilter(ISQLExpressionFormat formatter){
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69 | 7897 | jorpiell | root = new BinaryTree();
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70 | this.formatter = formatter;
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71 | 31835 | jpiera | spatialFilterOperations = new ArrayList(); |
72 | 7897 | jorpiell | } |
73 | 18271 | jpiera | |
74 | /**
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75 | 31835 | jpiera | * It returns the Query like a String
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76 | */
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77 | 34026 | jpiera | public abstract String toString(BinaryTree tree, String version); |
78 | 31835 | jpiera | |
79 | /**
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80 | * returns the String that represents the logic
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81 | * operator in this query language
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82 | * @param operator
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83 | * Logic operator
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84 | * @return
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85 | */
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86 | public abstract String getLogicalOperator(int operator); |
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87 | |||
88 | /**
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89 | * returns the String that represents the relational
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90 | * operator in this query language
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91 | * @param operator
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92 | * Logic operator
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93 | * @return
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94 | */
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95 | public abstract String getRelationalOperator(int operator); |
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96 | |||
97 | /**
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98 | * returns the String that represents the geometric
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99 | * operator in this query language
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100 | * @param operator
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101 | * Logic operator
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102 | * @return
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103 | */
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104 | public abstract String getGeometricOperator(int operator); |
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105 | |||
106 | /**
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107 | * returns the String that represents the separator
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108 | * operator in this query language
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109 | * @param separator
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110 | * LSeparator "(" or ")"
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111 | * @return
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112 | */
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113 | public abstract String getSeparator(int separator); |
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114 | |||
115 | /**
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116 | 18271 | jpiera | * Adds a feature id
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117 | * @param id
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118 | * The feature id
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119 | */
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120 | public void addFeatureById(Object id){ |
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121 | if (ids == null){ |
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122 | ids = new ArrayList(); |
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123 | } |
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124 | ids.add(id); |
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125 | } |
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126 | 31835 | jpiera | |
127 | 18271 | jpiera | /**
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128 | * @return the ids
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129 | */
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130 | protected ArrayList getIds() { |
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131 | return ids;
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132 | } |
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133 | |||
134 | 29680 | jpiera | public void setQueryByAttribute(String query){ |
135 | 8442 | jorpiell | if (query != null){ |
136 | ByteArrayInputStream is = new ByteArrayInputStream(query.getBytes()); |
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137 | String sql = formatter.format(query);
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138 | if (sql != null){ |
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139 | ParseExpressions expressions = new ParseExpressions();
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140 | ArrayList tokens = expressions.parseExpression(sql);
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141 | 17104 | vcaballero | |
142 | 8442 | jorpiell | for (int i=0 ; i<tokens.size() ; i++){ |
143 | String token = (String)tokens.get(i); |
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144 | root.addTerm(token); |
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145 | } |
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146 | } |
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147 | } |
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148 | 7897 | jorpiell | } |
149 | 31835 | jpiera | |
150 | 18271 | jpiera | /**
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151 | * It adds a new property and value using the AND
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152 | * operation
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153 | * @param propertyName
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154 | * @param propertyValue
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155 | */
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156 | public void addAndClause(String propertyName, String propertyValue){ |
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157 | root.addTerm(propertyName + " = " + propertyValue,
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158 | getLogicalOperator(LOGICAL_OPERATOR_AND)); |
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159 | } |
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160 | 31835 | jpiera | |
161 | public int getSpatialFiltersCount(){ |
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162 | return spatialFilterOperations.size();
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163 | 10246 | jorpiell | } |
164 | 31835 | jpiera | |
165 | public WFSSpatialFilterOperation getSpatialFilterAt(int index){ |
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166 | if (index < spatialFilterOperations.size()){
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167 | return (WFSSpatialFilterOperation)spatialFilterOperations.get(index);
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168 | } |
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169 | return null; |
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170 | } |
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171 | |||
172 | public void clearSpatialFilters(){ |
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173 | spatialFilterOperations.clear(); |
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174 | } |
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175 | 10246 | jorpiell | |
176 | 31835 | jpiera | public void addSpatialFilter(WFSSpatialFilterOperation spatialOperation){ |
177 | spatialFilterOperations.add(spatialOperation); |
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178 | 29680 | jpiera | } |
179 | 31835 | jpiera | |
180 | 34026 | jpiera | public void addSpatialFilter(Geometry geometry,String attributeName, String nameSpacePrefix, String nameSpaceLocation, String srs, int operation) { |
181 | addSpatialFilter(new WFSGeometryFilterOperation(geometry, operation, attributeName, nameSpacePrefix, nameSpaceLocation, srs));
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182 | 31835 | jpiera | } |
183 | 29680 | jpiera | |
184 | 34026 | jpiera | public void addSpatialFilter(String version, Envelope envelope, String attributeName, String nameSpacePrefix, String nameSpaceLocation, String srs, int operation) { |
185 | addSpatialFilter(new WFSEnvelopeFilterOperation(envelope, operation, attributeName, nameSpacePrefix, nameSpaceLocation, srs));
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186 | 31835 | jpiera | } |
187 | |||
188 | 7897 | jorpiell | public void addClause(String value){ |
189 | if (currentClause == null){ |
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190 | currentClause = new String(""); |
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191 | } |
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192 | currentClause = currentClause + value; |
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193 | } |
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194 | 31835 | jpiera | |
195 | 34026 | jpiera | public String toString(String version){ |
196 | 7897 | jorpiell | if (currentClause != null){ |
197 | 29680 | jpiera | setQueryByAttribute(currentClause); |
198 | 7897 | jorpiell | } |
199 | 34026 | jpiera | return toString(root, version);
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200 | 31835 | jpiera | } |
201 | 7897 | jorpiell | |
202 | /**
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203 | 31835 | jpiera | * Return true if the token is a operator
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204 | * @param operator
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205 | * @return
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206 | */
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207 | public String getOperator(int operator){ |
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208 | if (isLogical(operator)){
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209 | return getLogicalOperator(operator);
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210 | }else if(isRelational(operator)){ |
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211 | return getRelationalOperator(operator);
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212 | }else if(isGeometric(operator)){ |
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213 | return getGeometricOperator(operator);
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214 | } |
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215 | return String.valueOf(operator); |
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216 | } |
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217 | |||
218 | public int getRelationalOperator(String operator){ |
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219 | if (operator.equals("=")){ |
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220 | return RELATIONAL_OPERATOR_IS_EQUALS_TO;
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221 | }else if(operator.equals("!=")){ |
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222 | return RELATIONAL_OPERATOR_IS_NOT_EQUALS_TO;
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223 | }else if(operator.equals("<>")){ // This is another way to tell not-equal |
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224 | return RELATIONAL_OPERATOR_IS_NOT_EQUALS_TO;
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225 | }else if(operator.equals(">")){ |
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226 | return RELATIONAL_OPERATOR_IS_GREATER_THAN;
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227 | }else if(operator.equals(">=")){ |
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228 | return RELATIONAL_OPERATOR_IS_GREATER_THAN_OR_EQUAL_TO;
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229 | }else if(operator.equals("<")){ |
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230 | return RELATIONAL_OPERATOR_IS_LESS_THAN;
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231 | }else if(operator.equals("<=")){ |
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232 | return RELATIONAL_OPERATOR_IS_LESS_THAN_OR_EQUAL_TO;
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233 | }else if(operator.toUpperCase().equals("LIKE")){ |
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234 | return RELATIONAL_OPERATOR_IS_LIKE;
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235 | } |
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236 | return RELATIONAL_OPERATOR_IS_EQUALS_TO;
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237 | 7897 | jorpiell | } |
238 | |||
239 | 31835 | jpiera | public int getLogicalOperator(String operator){ |
240 | if (operator.toUpperCase().equals("AND")){ |
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241 | return LOGICAL_OPERATOR_AND;
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242 | }else if(operator.toUpperCase().equals("NOT")){ |
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243 | return LOGICAL_OPERATOR_NOT;
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244 | }else if(operator.toUpperCase().equals("OR")){ |
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245 | return LOGICAL_OPERATOR_OR;
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246 | } |
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247 | return LOGICAL_OPERATOR_AND;
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248 | 7897 | jorpiell | } |
249 | |||
250 | /**
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251 | 31835 | jpiera | * Return true if is a geometric operator
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252 | * @param type
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253 | * @return
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254 | 10246 | jorpiell | */
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255 | 31835 | jpiera | private boolean isGeometric(int type) { |
256 | if ((type > 19) && (type < 40)){ |
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257 | return true; |
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258 | } |
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259 | return false; |
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260 | 10246 | jorpiell | } |
261 | |||
262 | /**
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263 | 31835 | jpiera | * Return true if is a relational operator
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264 | * @param type
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265 | * @return
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266 | 10246 | jorpiell | */
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267 | 31835 | jpiera | private boolean isRelational(int type) { |
268 | if ((type > 39) && (type < 60)){ |
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269 | return true; |
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270 | } |
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271 | return false; |
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272 | 10392 | jorpiell | } |
273 | |||
274 | 31835 | jpiera | /**
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275 | * Return true if is a logical operator
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276 | * @param type
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277 | * @return
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278 | */
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279 | private boolean isLogical(int type){ |
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280 | if ((type > 9) && (type < 20)){ |
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281 | return true; |
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282 | } |
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283 | return false; |
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284 | 10392 | jorpiell | } |
285 | |||
286 | |||
287 | |||
288 | 31835 | jpiera | /**
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289 | * Return true if is a seperator
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290 | * @param type
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291 | * @return
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292 | */
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293 | private boolean isSeparator(int type){ |
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294 | if ((type > 59) && (type < 70)){ |
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295 | return true; |
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296 | } |
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297 | return false; |
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298 | } |
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299 | |||
300 | /**
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301 | * Divide a line in a set of words
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302 | * @param line
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303 | * Line to divide
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304 | * @param option
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305 | * If the option is EXACT it returns the same line
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306 | * @return Iteraror
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307 | * A set of words
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308 | */
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309 | public Iterator parseValues(String line, int option) { |
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310 | Vector values = new Vector(); |
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311 | |||
312 | if (option == CONCORDANCIA_EXACT) {
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313 | values.add(line); |
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314 | return values.iterator();
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315 | } |
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316 | |||
317 | StringTokenizer doubleQuotesTokenizer = new StringTokenizer(line, "\"", |
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318 | true);
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319 | boolean inside = false; |
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320 | while (doubleQuotesTokenizer.hasMoreTokens()) {
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321 | String token = doubleQuotesTokenizer.nextToken();
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322 | if (token.equals("\"")) { |
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323 | inside = !inside; |
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324 | } else if (inside) { |
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325 | values.add(token); |
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326 | } else {
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327 | StringTokenizer spaceTokenizer = new StringTokenizer(token, " "); |
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328 | while (spaceTokenizer.hasMoreTokens()) {
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329 | String value = spaceTokenizer.nextToken();
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330 | values.add(value); |
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331 | } |
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332 | } |
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333 | } |
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334 | return values.iterator();
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335 | } |
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336 | 7897 | jorpiell | } |