1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 | /* Copyright (c) 2006-2008 MetaCarta, Inc., published under the Clear BSD * license. See http://svn.openlayers.org/trunk/openlayers/license.txt for the * full text of the license. */ /** * @requires OpenLayers/Filter.js * @requires OpenLayers/Console.js */ /** * Class: OpenLayers.Filter.Comparison * This class represents a comparison filter. * * Inherits from * - <OpenLayers.Filter> */ OpenLayers.Filter.Comparison = OpenLayers.Class(OpenLayers.Filter, { /** * APIProperty: type * {String} type: type of the comparison. This is one of * - OpenLayers.Filter.Comparison.EQUAL_TO = "=="; * - OpenLayers.Filter.Comparison.NOT_EQUAL_TO = "!="; * - OpenLayers.Filter.Comparison.LESS_THAN = "<"; * - OpenLayers.Filter.Comparison.GREATER_THAN = ">"; * - OpenLayers.Filter.Comparison.LESS_THAN_OR_EQUAL_TO = "<="; * - OpenLayers.Filter.Comparison.GREATER_THAN_OR_EQUAL_TO = ">="; * - OpenLayers.Filter.Comparison.BETWEEN = ".."; * - OpenLayers.Filter.Comparison.LIKE = "~"; */ type: null, /** * APIProperty: property * {String} * name of the context property to compare */ property: null, /** * APIProperty: value * {Number} or {String} * comparison value for binary comparisons. In the case of a String, this * can be a combination of text and propertyNames in the form * "literal ${propertyName}" */ value: null, /** * Property: matchCase * {Boolean} Force case sensitive searches for EQUAL_TO and NOT_EQUAL_TO * comparisons. The Filter Encoding 1.1 specification added a matchCase * attribute to ogc:PropertyIsEqualTo and ogc:PropertyIsNotEqualTo * elements. This property will be serialized with those elements only * if using the v1.1.0 filter format. However, when evaluating filters * here, the matchCase property will always be respected (for EQUAL_TO * and NOT_EQUAL_TO). Default is true. */ matchCase: true, /** * APIProperty: lowerBoundary * {Number} or {String} * lower boundary for between comparisons. In the case of a String, this * can be a combination of text and propertyNames in the form * "literal ${propertyName}" */ lowerBoundary: null, /** * APIProperty: upperBoundary * {Number} or {String} * upper boundary for between comparisons. In the case of a String, this * can be a combination of text and propertyNames in the form * "literal ${propertyName}" */ upperBoundary: null, /** * Constructor: OpenLayers.Filter.Comparison * Creates a comparison rule. * * Parameters: * options - {Object} An optional object with properties to set on the * rule * * Returns: * {<OpenLayers.Filter.Comparison>} */ initialize: function(options) { OpenLayers.Filter.prototype.initialize.apply(this, [options]); }, /** * APIMethod: evaluate * Evaluates this filter in a specific context. Should be implemented by * subclasses. * * Parameters: * context - {Object} Context to use in evaluating the filter. * * Returns: * {Boolean} The filter applies. */ evaluate: function(context) { var result = false; switch(this.type) { case OpenLayers.Filter.Comparison.EQUAL_TO: var got = context[this.property]; var exp = this.value; if(!this.matchCase && typeof got == "string" && typeof exp == "string") { result = (got.toUpperCase() == exp.toUpperCase()); } else { result = (got == exp); } break; case OpenLayers.Filter.Comparison.NOT_EQUAL_TO: var got = context[this.property]; var exp = this.value; if(!this.matchCase && typeof got == "string" && typeof exp == "string") { result = (got.toUpperCase() != exp.toUpperCase()); } else { result = (got != exp); } break; case OpenLayers.Filter.Comparison.LESS_THAN: result = context[this.property] < this.value; break; case OpenLayers.Filter.Comparison.GREATER_THAN: result = context[this.property] > this.value; break; case OpenLayers.Filter.Comparison.LESS_THAN_OR_EQUAL_TO: result = context[this.property] <= this.value; break; case OpenLayers.Filter.Comparison.GREATER_THAN_OR_EQUAL_TO: result = context[this.property] >= this.value; break; case OpenLayers.Filter.Comparison.BETWEEN: result = (context[this.property] >= this.lowerBoundary) && (context[this.property] <= this.upperBoundary); break; case OpenLayers.Filter.Comparison.LIKE: var regexp = new RegExp(this.value, "gi"); result = regexp.test(context[this.property]); break; } return result; }, /** * APIMethod: value2regex * Converts the value of this rule into a regular expression string, * according to the wildcard characters specified. This method has to * be called after instantiation of this class, if the value is not a * regular expression already. * * Parameters: * wildCard - {<Char>} wildcard character in the above value, default * is "*" * singleChar - {<Char>) single-character wildcard in the above value * default is "." * escape - {<Char>) escape character in the above value, default is * "!" * * Returns: * {String} regular expression string */ value2regex: function(wildCard, singleChar, escapeChar) { if (wildCard == ".") { var msg = "'.' is an unsupported wildCard character for "+ "OpenLayers.Filter.Comparison"; OpenLayers.Console.error(msg); return null; } // set UMN MapServer defaults for unspecified parameters wildCard = wildCard ? wildCard : "*"; singleChar = singleChar ? singleChar : "."; escapeChar = escapeChar ? escapeChar : "!"; this.value = this.value.replace( new RegExp("\\"+escapeChar+"(.|$)", "g"), "\\$1"); this.value = this.value.replace( new RegExp("\\"+singleChar, "g"), "."); this.value = this.value.replace( new RegExp("\\"+wildCard, "g"), ".*"); this.value = this.value.replace( new RegExp("\\\\.\\*", "g"), "\\"+wildCard); this.value = this.value.replace( new RegExp("\\\\\\.", "g"), "\\"+singleChar); return this.value; }, /** * Method: regex2value * Convert the value of this rule from a regular expression string into an * ogc literal string using a wildCard of *, a singleChar of ., and an * escape of !. Leaves the <value> property unmodified. * * Returns: * {String} A string value. */ regex2value: function() { var value = this.value; // replace ! with !! value = value.replace(/!/g, "!!"); // replace \. with !. (watching out for \\.) value = value.replace(/(\\)?\\\./g, function($0, $1) { return $1 ? $0 : "!."; }); // replace \* with #* (watching out for \\*) value = value.replace(/(\\)?\\\*/g, function($0, $1) { return $1 ? $0 : "!*"; }); // replace \\ with \ value = value.replace(/\\\\/g, "\\"); // convert .* to * (the sequence #.* is not allowed) value = value.replace(/\.\*/g, "*"); return value; }, /** * APIMethod: clone * Clones this filter. * * Returns: * {<OpenLayers.Filter.Comparison>} Clone of this filter. */ clone: function() { return OpenLayers.Util.extend(new OpenLayers.Filter.Comparison(), this); }, CLASS_NAME: "OpenLayers.Filter.Comparison" }); OpenLayers.Filter.Comparison.EQUAL_TO = "=="; OpenLayers.Filter.Comparison.NOT_EQUAL_TO = "!="; OpenLayers.Filter.Comparison.LESS_THAN = "<"; OpenLayers.Filter.Comparison.GREATER_THAN = ">"; OpenLayers.Filter.Comparison.LESS_THAN_OR_EQUAL_TO = "<="; OpenLayers.Filter.Comparison.GREATER_THAN_OR_EQUAL_TO = ">="; OpenLayers.Filter.Comparison.BETWEEN = ".."; OpenLayers.Filter.Comparison.LIKE = "~"; |