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/* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for |
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* full list of contributors). Published under the Clear BSD license. |
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* See http://svn.openlayers.org/trunk/openlayers/license.txt for the |
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* full text of the license. */ |
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/** |
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* @requires OpenLayers/Format/XML.js |
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* @requires OpenLayers/Filter/FeatureId.js |
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* @requires OpenLayers/Filter/Logical.js |
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* @requires OpenLayers/Filter/Comparison.js |
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*/ |
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/** |
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* Class: OpenLayers.Format.Filter |
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* Read/Wite ogc:Filter. Create a new instance with the <OpenLayers.Format.Filter> |
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* constructor. |
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* |
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* Inherits from: |
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* - <OpenLayers.Format.XML> |
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*/ |
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OpenLayers.Format.Filter = OpenLayers.Class(OpenLayers.Format.XML, { |
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/** |
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* APIProperty: defaultVersion |
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* {String} Version number to assume if none found. Default is "1.0.0". |
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*/ |
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defaultVersion: "1.0.0", |
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/** |
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* APIProperty: version |
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* {String} Specify a version string if one is known. |
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*/ |
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version: null, |
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/** |
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* Property: parser |
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* {Object} Instance of the versioned parser. Cached for multiple read and |
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* write calls of the same version. |
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*/ |
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parser: null, |
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/** |
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* Constructor: OpenLayers.Format.Filter |
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* Create a new parser for Filter. |
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* |
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* Parameters: |
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* options - {Object} An optional object whose properties will be set on |
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* this instance. |
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*/ |
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initialize: function(options) { |
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OpenLayers.Format.XML.prototype.initialize.apply(this, [options]); |
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}, |
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/** |
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* APIMethod: write |
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* Write an ogc:Filter given a filter object. |
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* |
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* Parameters: |
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* filter - {<OpenLayers.Filter>} An filter. |
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* options - {Object} Optional configuration object. |
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* |
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* Returns: |
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* {Elment} An ogc:Filter element node. |
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*/ |
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write: function(filter, options) { |
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var version = (options && options.version) || |
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this.version || this.defaultVersion; |
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if(!this.parser || this.parser.VERSION != version) { |
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var format = OpenLayers.Format.Filter[ |
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"v" + version.replace(/\./g, "_") |
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]; |
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if(!format) { |
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throw "Can't find a Filter parser for version " + |
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version; |
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} |
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this.parser = new format(this.options); |
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} |
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return this.parser.write(filter); |
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//return OpenLayers.Format.XML.prototype.write.apply(this, [root]); |
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}, |
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/** |
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* APIMethod: read |
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* Read and Filter doc and return an object representing the Filter. |
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* |
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* Parameters: |
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* data - {String | DOMElement} Data to read. |
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* |
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* Returns: |
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* {<OpenLayers.Filter>} A filter object. |
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*/ |
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read: function(data) { |
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if(typeof data == "string") { |
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data = OpenLayers.Format.XML.prototype.read.apply(this, [data]); |
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} |
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var version = this.version; |
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if(!version) { |
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version = this.defaultVersion; |
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} |
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if(!this.parser || this.parser.VERSION != version) { |
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var format = OpenLayers.Format.Filter[ |
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"v" + version.replace(/\./g, "_") |
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]; |
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if(!format) { |
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throw "Can't find a Filter parser for version " + |
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version; |
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} |
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this.parser = new format(this.options); |
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} |
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var filter = this.parser.read(data); |
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return filter; |
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}, |
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CLASS_NAME: "OpenLayers.Format.Filter" |
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}); |
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