svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.remoteclient / src / main / java / org / gvsig / remoteclient / wfs / filters / AbstractFilter.java @ 40769
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1 | 40559 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2007-2013 gvSIG Association.
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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 3
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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., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | * For any additional information, do not hesitate to contact us
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22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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23 | */
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24 | 40435 | jjdelcerro | |
25 | package org.gvsig.remoteclient.wfs.filters; |
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26 | import java.io.ByteArrayInputStream; |
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27 | import java.util.ArrayList; |
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28 | import java.util.Iterator; |
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29 | import java.util.StringTokenizer; |
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30 | import java.util.Vector; |
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31 | |||
32 | import org.gvsig.fmap.geom.Geometry; |
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33 | import org.gvsig.fmap.geom.primitive.Envelope; |
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34 | import org.gvsig.remoteclient.wfs.filters.operations.WFSEnvelopeFilterOperation; |
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35 | import org.gvsig.remoteclient.wfs.filters.operations.WFSGeometryFilterOperation; |
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36 | import org.gvsig.remoteclient.wfs.filters.operations.WFSSpatialFilterOperation; |
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37 | |||
38 | /**
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39 | * All classes that implement a "Query Language" must to inherit of
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40 | * this class
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41 | *
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42 | * @author Jorge Piera Llodra (piera_jor@gva.es)
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43 | */
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44 | public abstract class AbstractFilter implements Filter { |
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45 | private BinaryTree root;
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46 | private String currentClause; |
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47 | private ISQLExpressionFormat formatter;
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48 | private ArrayList spatialFilterOperations; |
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49 | private ArrayList ids = null; |
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50 | |||
51 | public AbstractFilter(ISQLExpressionFormat formatter){
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52 | root = new BinaryTree();
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53 | this.formatter = formatter;
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54 | spatialFilterOperations = new ArrayList(); |
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55 | } |
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56 | |||
57 | /**
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58 | * It returns the Query like a String
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59 | */
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60 | public abstract String toString(BinaryTree tree, String version); |
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61 | |||
62 | /**
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63 | * returns the String that represents the logic
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64 | * operator in this query language
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65 | * @param operator
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66 | * Logic operator
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67 | * @return
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68 | */
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69 | public abstract String getLogicalOperator(int operator); |
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70 | |||
71 | /**
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72 | * returns the String that represents the relational
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73 | * operator in this query language
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74 | * @param operator
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75 | * Logic operator
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76 | * @return
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77 | */
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78 | public abstract String getRelationalOperator(int operator); |
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79 | |||
80 | /**
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81 | * returns the String that represents the geometric
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82 | * operator in this query language
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83 | * @param operator
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84 | * Logic operator
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85 | * @return
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86 | */
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87 | public abstract String getGeometricOperator(int operator); |
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88 | |||
89 | /**
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90 | * returns the String that represents the separator
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91 | * operator in this query language
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92 | * @param separator
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93 | * LSeparator "(" or ")"
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94 | * @return
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95 | */
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96 | public abstract String getSeparator(int separator); |
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97 | |||
98 | /**
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99 | * Adds a feature id
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100 | * @param id
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101 | * The feature id
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102 | */
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103 | public void addFeatureById(Object id){ |
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104 | if (ids == null){ |
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105 | ids = new ArrayList(); |
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106 | } |
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107 | ids.add(id); |
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108 | } |
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109 | |||
110 | /**
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111 | * @return the ids
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112 | */
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113 | protected ArrayList getIds() { |
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114 | return ids;
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115 | } |
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116 | |||
117 | public void setQueryByAttribute(String query){ |
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118 | if (query != null){ |
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119 | ByteArrayInputStream is = new ByteArrayInputStream(query.getBytes()); |
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120 | String sql = formatter.format(query);
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121 | if (sql != null){ |
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122 | ParseExpressions expressions = new ParseExpressions();
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123 | ArrayList tokens = expressions.parseExpression(sql);
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124 | |||
125 | for (int i=0 ; i<tokens.size() ; i++){ |
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126 | String token = (String)tokens.get(i); |
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127 | root.addTerm(token); |
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128 | } |
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129 | } |
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130 | } |
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131 | } |
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132 | |||
133 | /**
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134 | * It adds a new property and value using the AND
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135 | * operation
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136 | * @param propertyName
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137 | * @param propertyValue
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138 | */
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139 | public void addAndClause(String propertyName, String propertyValue){ |
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140 | root.addTerm(propertyName + " = " + propertyValue,
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141 | getLogicalOperator(LOGICAL_OPERATOR_AND)); |
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142 | } |
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143 | |||
144 | public int getSpatialFiltersCount(){ |
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145 | return spatialFilterOperations.size();
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146 | } |
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147 | |||
148 | public WFSSpatialFilterOperation getSpatialFilterAt(int index){ |
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149 | if (index < spatialFilterOperations.size()){
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150 | return (WFSSpatialFilterOperation)spatialFilterOperations.get(index);
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151 | } |
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152 | return null; |
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153 | } |
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154 | |||
155 | public void clearSpatialFilters(){ |
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156 | spatialFilterOperations.clear(); |
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157 | } |
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158 | |||
159 | public void addSpatialFilter(WFSSpatialFilterOperation spatialOperation){ |
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160 | if (spatialOperation != null){ |
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161 | spatialFilterOperations.add(spatialOperation); |
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162 | } |
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163 | } |
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164 | |||
165 | public void addSpatialFilter(Geometry geometry,String attributeName, String nameSpacePrefix, String nameSpaceLocation, String srs, int operation) { |
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166 | addSpatialFilter(new WFSGeometryFilterOperation(geometry, operation, attributeName, nameSpacePrefix, nameSpaceLocation, srs));
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167 | } |
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168 | |||
169 | public void addSpatialFilter(String version, Envelope envelope, String attributeName, String nameSpacePrefix, String nameSpaceLocation, String srs, int operation) { |
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170 | addSpatialFilter(new WFSEnvelopeFilterOperation(envelope, operation, attributeName, nameSpacePrefix, nameSpaceLocation, srs));
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171 | } |
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172 | |||
173 | public void addClause(String value){ |
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174 | if (currentClause == null){ |
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175 | currentClause = new String(""); |
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176 | } |
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177 | currentClause = currentClause + value; |
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178 | } |
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179 | |||
180 | public String toString(String version){ |
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181 | if (currentClause != null){ |
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182 | setQueryByAttribute(currentClause); |
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183 | } |
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184 | return toString(root, version);
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185 | } |
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186 | |||
187 | /**
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188 | * Return true if the token is a operator
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189 | * @param operator
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190 | * @return
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191 | */
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192 | public String getOperator(int operator){ |
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193 | if (isLogical(operator)){
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194 | return getLogicalOperator(operator);
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195 | }else if(isRelational(operator)){ |
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196 | return getRelationalOperator(operator);
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197 | }else if(isGeometric(operator)){ |
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198 | return getGeometricOperator(operator);
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199 | } |
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200 | return String.valueOf(operator); |
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201 | } |
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202 | |||
203 | public int getRelationalOperator(String operator){ |
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204 | if (operator.equals("=")){ |
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205 | return RELATIONAL_OPERATOR_IS_EQUALS_TO;
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206 | }else if(operator.equals("!=")){ |
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207 | return RELATIONAL_OPERATOR_IS_NOT_EQUALS_TO;
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208 | }else if(operator.equals("<>")){ // This is another way to tell not-equal |
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209 | return RELATIONAL_OPERATOR_IS_NOT_EQUALS_TO;
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210 | }else if(operator.equals(">")){ |
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211 | return RELATIONAL_OPERATOR_IS_GREATER_THAN;
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212 | }else if(operator.equals(">=")){ |
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213 | return RELATIONAL_OPERATOR_IS_GREATER_THAN_OR_EQUAL_TO;
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214 | }else if(operator.equals("<")){ |
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215 | return RELATIONAL_OPERATOR_IS_LESS_THAN;
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216 | }else if(operator.equals("<=")){ |
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217 | return RELATIONAL_OPERATOR_IS_LESS_THAN_OR_EQUAL_TO;
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218 | }else if(operator.toUpperCase().equals("LIKE")){ |
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219 | return RELATIONAL_OPERATOR_IS_LIKE;
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220 | } |
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221 | return RELATIONAL_OPERATOR_IS_EQUALS_TO;
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222 | } |
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223 | |||
224 | public int getLogicalOperator(String operator){ |
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225 | if (operator.toUpperCase().equals("AND")){ |
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226 | return LOGICAL_OPERATOR_AND;
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227 | }else if(operator.toUpperCase().equals("NOT")){ |
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228 | return LOGICAL_OPERATOR_NOT;
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229 | }else if(operator.toUpperCase().equals("OR")){ |
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230 | return LOGICAL_OPERATOR_OR;
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231 | } |
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232 | return LOGICAL_OPERATOR_AND;
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233 | } |
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234 | |||
235 | /**
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236 | * Return true if is a geometric operator
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237 | * @param type
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238 | * @return
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239 | */
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240 | private boolean isGeometric(int type) { |
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241 | if ((type > 19) && (type < 40)){ |
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242 | return true; |
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243 | } |
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244 | return false; |
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245 | } |
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246 | |||
247 | /**
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248 | * Return true if is a relational operator
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249 | * @param type
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250 | * @return
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251 | */
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252 | private boolean isRelational(int type) { |
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253 | if ((type > 39) && (type < 60)){ |
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254 | return true; |
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255 | } |
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256 | return false; |
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257 | } |
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258 | |||
259 | /**
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260 | * Return true if is a logical operator
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261 | * @param type
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262 | * @return
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263 | */
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264 | private boolean isLogical(int type){ |
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265 | if ((type > 9) && (type < 20)){ |
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266 | return true; |
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267 | } |
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268 | return false; |
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269 | } |
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270 | |||
271 | |||
272 | |||
273 | /**
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274 | * Return true if is a seperator
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275 | * @param type
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276 | * @return
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277 | */
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278 | private boolean isSeparator(int type){ |
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279 | if ((type > 59) && (type < 70)){ |
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280 | return true; |
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281 | } |
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282 | return false; |
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283 | } |
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284 | |||
285 | /**
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286 | * Divide a line in a set of words
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287 | * @param line
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288 | * Line to divide
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289 | * @param option
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290 | * If the option is EXACT it returns the same line
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291 | * @return Iteraror
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292 | * A set of words
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293 | */
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294 | public Iterator parseValues(String line, int option) { |
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295 | Vector values = new Vector(); |
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296 | |||
297 | if (option == CONCORDANCIA_EXACT) {
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298 | values.add(line); |
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299 | return values.iterator();
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300 | } |
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301 | |||
302 | StringTokenizer doubleQuotesTokenizer = new StringTokenizer(line, "\"", |
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303 | true);
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304 | boolean inside = false; |
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305 | while (doubleQuotesTokenizer.hasMoreTokens()) {
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306 | String token = doubleQuotesTokenizer.nextToken();
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307 | if (token.equals("\"")) { |
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308 | inside = !inside; |
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309 | } else if (inside) { |
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310 | values.add(token); |
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311 | } else {
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312 | StringTokenizer spaceTokenizer = new StringTokenizer(token, " "); |
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313 | while (spaceTokenizer.hasMoreTokens()) {
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314 | String value = spaceTokenizer.nextToken();
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315 | values.add(value); |
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316 | } |
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317 | } |
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318 | } |
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319 | return values.iterator();
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320 | } |
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321 | } |