[76] | 1 | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for |
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| 2 | * full list of contributors). Published under the Clear BSD license. |
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| 3 | * See http://svn.openlayers.org/trunk/openlayers/license.txt for the |
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| 4 | * full text of the license. */ |
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| 5 | |
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| 6 | /** |
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| 7 | * @requires OpenLayers/Format/XML.js |
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| 8 | * @requires OpenLayers/Filter/FeatureId.js |
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| 9 | * @requires OpenLayers/Filter/Logical.js |
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| 10 | * @requires OpenLayers/Filter/Comparison.js |
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| 11 | */ |
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| 12 | |
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| 13 | /** |
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| 14 | * Class: OpenLayers.Format.Filter |
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| 15 | * Read/Wite ogc:Filter. Create a new instance with the <OpenLayers.Format.Filter> |
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| 16 | * constructor. |
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| 17 | * |
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| 18 | * Inherits from: |
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| 19 | * - <OpenLayers.Format.XML> |
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| 20 | */ |
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| 21 | OpenLayers.Format.Filter = OpenLayers.Class(OpenLayers.Format.XML, { |
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| 22 | |
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| 23 | /** |
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| 24 | * APIProperty: defaultVersion |
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| 25 | * {String} Version number to assume if none found. Default is "1.0.0". |
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| 26 | */ |
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| 27 | defaultVersion: "1.0.0", |
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| 28 | |
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| 29 | /** |
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| 30 | * APIProperty: version |
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| 31 | * {String} Specify a version string if one is known. |
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| 32 | */ |
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| 33 | version: null, |
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| 34 | |
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| 35 | /** |
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| 36 | * Property: parser |
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| 37 | * {Object} Instance of the versioned parser. Cached for multiple read and |
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| 38 | * write calls of the same version. |
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| 39 | */ |
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| 40 | parser: null, |
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| 41 | |
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| 42 | /** |
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| 43 | * Constructor: OpenLayers.Format.Filter |
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| 44 | * Create a new parser for Filter. |
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| 45 | * |
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| 46 | * Parameters: |
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| 47 | * options - {Object} An optional object whose properties will be set on |
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| 48 | * this instance. |
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| 49 | */ |
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| 50 | initialize: function(options) { |
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| 51 | OpenLayers.Format.XML.prototype.initialize.apply(this, [options]); |
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| 52 | }, |
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| 53 | |
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| 54 | /** |
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| 55 | * APIMethod: write |
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| 56 | * Write an ogc:Filter given a filter object. |
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| 57 | * |
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| 58 | * Parameters: |
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| 59 | * filter - {<OpenLayers.Filter>} An filter. |
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| 60 | * options - {Object} Optional configuration object. |
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| 61 | * |
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| 62 | * Returns: |
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| 63 | * {Elment} An ogc:Filter element node. |
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| 64 | */ |
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| 65 | write: function(filter, options) { |
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| 66 | var version = (options && options.version) || |
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| 67 | this.version || this.defaultVersion; |
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| 68 | if(!this.parser || this.parser.VERSION != version) { |
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| 69 | var format = OpenLayers.Format.Filter[ |
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| 70 | "v" + version.replace(/\./g, "_") |
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| 71 | ]; |
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| 72 | if(!format) { |
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| 73 | throw "Can't find a Filter parser for version " + |
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| 74 | version; |
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| 75 | } |
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| 76 | this.parser = new format(this.options); |
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| 77 | } |
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| 78 | return this.parser.write(filter); |
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| 79 | //return OpenLayers.Format.XML.prototype.write.apply(this, [root]); |
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| 80 | }, |
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| 81 | |
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| 82 | /** |
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| 83 | * APIMethod: read |
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| 84 | * Read and Filter doc and return an object representing the Filter. |
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| 85 | * |
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| 86 | * Parameters: |
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| 87 | * data - {String | DOMElement} Data to read. |
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| 88 | * |
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| 89 | * Returns: |
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| 90 | * {<OpenLayers.Filter>} A filter object. |
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| 91 | */ |
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| 92 | read: function(data) { |
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| 93 | if(typeof data == "string") { |
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| 94 | data = OpenLayers.Format.XML.prototype.read.apply(this, [data]); |
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| 95 | } |
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| 96 | var version = this.version; |
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| 97 | if(!version) { |
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| 98 | version = this.defaultVersion; |
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| 99 | } |
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| 100 | if(!this.parser || this.parser.VERSION != version) { |
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| 101 | var format = OpenLayers.Format.Filter[ |
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| 102 | "v" + version.replace(/\./g, "_") |
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| 103 | ]; |
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| 104 | if(!format) { |
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| 105 | throw "Can't find a Filter parser for version " + |
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| 106 | version; |
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| 107 | } |
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| 108 | this.parser = new format(this.options); |
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| 109 | } |
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| 110 | var filter = this.parser.read(data); |
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| 111 | return filter; |
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| 112 | }, |
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| 113 | |
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| 114 | CLASS_NAME: "OpenLayers.Format.Filter" |
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| 115 | }); |
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