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/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for
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* full list of contributors). Published under the 2-clause BSD license.
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* See license.txt in the OpenLayers distribution or repository 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/Feature/Vector.js
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* @requires OpenLayers/Geometry/Point.js
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* @requires OpenLayers/Geometry/MultiPoint.js
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* @requires OpenLayers/Geometry/LineString.js
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* @requires OpenLayers/Geometry/MultiLineString.js
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* @requires OpenLayers/Geometry/Polygon.js
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* @requires OpenLayers/Geometry/MultiPolygon.js
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*/
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/**
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* Class: OpenLayers.Format.GML
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* Read/Write GML. Create a new instance with the <OpenLayers.Format.GML>
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* constructor. Supports the GML simple features profile.
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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.GML = OpenLayers.Class(OpenLayers.Format.XML, {
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/**
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* APIProperty: featureNS
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* {String} Namespace used for feature attributes. Default is
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* "http://mapserver.gis.umn.edu/mapserver".
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*/
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featureNS: "http://mapserver.gis.umn.edu/mapserver",
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/**
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* APIProperty: featurePrefix
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* {String} Namespace alias (or prefix) for feature nodes. Default is
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* "feature".
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*/
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featurePrefix: "feature",
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/**
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* APIProperty: featureName
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* {String} Element name for features. Default is "featureMember".
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*/
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featureName: "featureMember",
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/**
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* APIProperty: layerName
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* {String} Name of data layer. Default is "features".
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*/
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layerName: "features",
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/**
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* APIProperty: geometryName
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* {String} Name of geometry element. Defaults to "geometry".
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*/
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geometryName: "geometry",
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/**
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* APIProperty: collectionName
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* {String} Name of featureCollection element.
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*/
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collectionName: "FeatureCollection",
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/**
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* APIProperty: gmlns
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* {String} GML Namespace.
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*/
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gmlns: "http://www.opengis.net/gml",
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/**
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* APIProperty: extractAttributes
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* {Boolean} Extract attributes from GML.
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*/
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extractAttributes: true,
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/**
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* APIProperty: xy
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* {Boolean} Order of the GML coordinate true:(x,y) or false:(y,x)
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* Changing is not recommended, a new Format should be instantiated.
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*/
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xy: true,
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/**
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* Constructor: OpenLayers.Format.GML
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* Create a new parser for GML.
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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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// compile regular expressions once instead of every time they are used
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this.regExes = {
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trimSpace: (/^\s*|\s*$/g),
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removeSpace: (/\s*/g),
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splitSpace: (/\s+/),
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trimComma: (/\s*,\s*/g)
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};
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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: read
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* Read data from a string, and return a list of features.
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*
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* Parameters:
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* data - {String} or {DOMElement} data to read/parse.
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*
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* Returns:
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* {Array(<OpenLayers.Feature.Vector>)} An array of features.
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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 featureNodes = this.getElementsByTagNameNS(data.documentElement,
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this.gmlns,
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this.featureName);
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var features = [];
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for(var i=0; i<featureNodes.length; i++) {
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var feature = this.parseFeature(featureNodes[i]);
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if(feature) {
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features.push(feature);
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}
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}
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return features;
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},
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/**
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* Method: parseFeature
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* This function is the core of the GML parsing code in OpenLayers.
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* It creates the geometries that are then attached to the returned
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* feature, and calls parseAttributes() to get attribute data out.
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*
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* Parameters:
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* node - {DOMElement} A GML feature node.
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*/
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parseFeature: function(node) {
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// only accept one geometry per feature - look for highest "order"
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var order = ["MultiPolygon", "Polygon",
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"MultiLineString", "LineString",
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"MultiPoint", "Point", "Envelope"];
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// FIXME: In case we parse a feature with no geometry, but boundedBy an Envelope,
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// this code creates a geometry derived from the Envelope. This is not correct.
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var type, nodeList, geometry, parser;
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for(var i=0; i<order.length; ++i) {
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type = order[i];
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nodeList = this.getElementsByTagNameNS(node, this.gmlns, type);
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if(nodeList.length > 0) {
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// only deal with first geometry of this type
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parser = this.parseGeometry[type.toLowerCase()];
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if(parser) {
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geometry = parser.apply(this, [nodeList[0]]);
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if (this.internalProjection && this.externalProjection) {
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geometry.transform(this.externalProjection,
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this.internalProjection);
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}
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} else {
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throw new TypeError("Unsupported geometry type: " + type);
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}
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// stop looking for different geometry types
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break;
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}
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}
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var bounds;
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var boxNodes = this.getElementsByTagNameNS(node, this.gmlns, "Box");
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for(i=0; i<boxNodes.length; ++i) {
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var boxNode = boxNodes[i];
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var box = this.parseGeometry["box"].apply(this, [boxNode]);
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var parentNode = boxNode.parentNode;
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var parentName = parentNode.localName ||
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parentNode.nodeName.split(":").pop();
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if(parentName === "boundedBy") {
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bounds = box;
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} else {
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geometry = box.toGeometry();
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}
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}
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// construct feature (optionally with attributes)
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var attributes;
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if(this.extractAttributes) {
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attributes = this.parseAttributes(node);
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}
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var feature = new OpenLayers.Feature.Vector(geometry, attributes);
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feature.bounds = bounds;
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feature.gml = {
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featureType: node.firstChild.nodeName.split(":")[1],
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featureNS: node.firstChild.namespaceURI,
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featureNSPrefix: node.firstChild.prefix
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};
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// assign fid - this can come from a "fid" or "id" attribute
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var childNode = node.firstChild;
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var fid;
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while(childNode) {
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if(childNode.nodeType == 1) {
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fid = childNode.getAttribute("fid") ||
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childNode.getAttribute("id");
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if(fid) {
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break;
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}
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}
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childNode = childNode.nextSibling;
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}
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feature.fid = fid;
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return feature;
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},
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/**
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* Property: parseGeometry
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* Properties of this object are the functions that parse geometries based
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* on their type.
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*/
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parseGeometry: {
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/**
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* Method: parseGeometry.point
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* Given a GML node representing a point geometry, create an OpenLayers
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* point geometry.
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*
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* Parameters:
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* node - {DOMElement} A GML node.
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*
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* Returns:
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* {<OpenLayers.Geometry.Point>} A point geometry.
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*/
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point: function(node) {
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/**
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* Three coordinate variations to consider:
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* 1) <gml:pos>x y z</gml:pos>
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* 2) <gml:coordinates>x, y, z</gml:coordinates>
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* 3) <gml:coord><gml:X>x</gml:X><gml:Y>y</gml:Y></gml:coord>
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*/
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var nodeList, coordString;
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var coords = [];
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// look for <gml:pos>
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var nodeList = this.getElementsByTagNameNS(node, this.gmlns, "pos");
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if(nodeList.length > 0) {
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coordString = nodeList[0].firstChild.nodeValue;
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coordString = coordString.replace(this.regExes.trimSpace, "");
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coords = coordString.split(this.regExes.splitSpace);
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}
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// look for <gml:coordinates>
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if(coords.length == 0) {
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nodeList = this.getElementsByTagNameNS(node, this.gmlns,
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"coordinates");
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if(nodeList.length > 0) {
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coordString = nodeList[0].firstChild.nodeValue;
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coordString = coordString.replace(this.regExes.removeSpace,
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"");
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coords = coordString.split(",");
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}
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}
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// look for <gml:coord>
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if(coords.length == 0) {
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nodeList = this.getElementsByTagNameNS(node, this.gmlns,
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"coord");
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if(nodeList.length > 0) {
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var xList = this.getElementsByTagNameNS(nodeList[0],
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this.gmlns, "X");
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var yList = this.getElementsByTagNameNS(nodeList[0],
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this.gmlns, "Y");
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if(xList.length > 0 && yList.length > 0) {
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coords = [xList[0].firstChild.nodeValue,
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yList[0].firstChild.nodeValue];
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}
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}
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}
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// preserve third dimension
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if(coords.length == 2) {
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coords[2] = null;
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}
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if (this.xy) {
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return new OpenLayers.Geometry.Point(coords[0], coords[1],
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coords[2]);
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}
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else{
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return new OpenLayers.Geometry.Point(coords[1], coords[0],
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coords[2]);
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}
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},
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/**
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* Method: parseGeometry.multipoint
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* Given a GML node representing a multipoint geometry, create an
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* OpenLayers multipoint geometry.
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*
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* Parameters:
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* node - {DOMElement} A GML node.
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*
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* Returns:
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* {<OpenLayers.Geometry.MultiPoint>} A multipoint geometry.
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*/
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multipoint: function(node) {
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var nodeList = this.getElementsByTagNameNS(node, this.gmlns,
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"Point");
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var components = [];
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if(nodeList.length > 0) {
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var point;
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for(var i=0; i<nodeList.length; ++i) {
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point = this.parseGeometry.point.apply(this, [nodeList[i]]);
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if(point) {
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components.push(point);
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}
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}
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}
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return new OpenLayers.Geometry.MultiPoint(components);
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},
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/**
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* Method: parseGeometry.linestring
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* Given a GML node representing a linestring geometry, create an
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* OpenLayers linestring geometry.
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*
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* Parameters:
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* node - {DOMElement} A GML node.
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*
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* Returns:
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* {<OpenLayers.Geometry.LineString>} A linestring geometry.
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*/
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linestring: function(node, ring) {
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/**
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* Two coordinate variations to consider:
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* 1) <gml:posList dimension="d">x0 y0 z0 x1 y1 z1</gml:posList>
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* 2) <gml:coordinates>x0, y0, z0 x1, y1, z1</gml:coordinates>
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*/
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var nodeList, coordString;
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var coords = [];
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var points = [];
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339
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// look for <gml:posList>
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nodeList = this.getElementsByTagNameNS(node, this.gmlns, "posList");
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if(nodeList.length > 0) {
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coordString = this.getChildValue(nodeList[0]);
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coordString = coordString.replace(this.regExes.trimSpace, "");
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coords = coordString.split(this.regExes.splitSpace);
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var dim = parseInt(nodeList[0].getAttribute("dimension"));
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var j, x, y, z;
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for(var i=0; i<coords.length/dim; ++i) {
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j = i * dim;
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x = coords[j];
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y = coords[j+1];
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z = (dim == 2) ? null : coords[j+2];
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if (this.xy) {
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points.push(new OpenLayers.Geometry.Point(x, y, z));
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} else {
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points.push(new OpenLayers.Geometry.Point(y, x, z));
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}
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358
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}
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359
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}
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360
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361
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// look for <gml:coordinates>
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if(coords.length == 0) {
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nodeList = this.getElementsByTagNameNS(node, this.gmlns,
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"coordinates");
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if(nodeList.length > 0) {
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coordString = this.getChildValue(nodeList[0]);
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coordString = coordString.replace(this.regExes.trimSpace,
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"");
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369
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coordString = coordString.replace(this.regExes.trimComma,
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",");
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371
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var pointList = coordString.split(this.regExes.splitSpace);
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for(var i=0; i<pointList.length; ++i) {
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coords = pointList[i].split(",");
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374
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if(coords.length == 2) {
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coords[2] = null;
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376
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}
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377
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if (this.xy) {
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378
|
points.push(new OpenLayers.Geometry.Point(coords[0],
|
|
379
|
coords[1],
|
|
380
|
coords[2]));
|
|
381
|
} else {
|
|
382
|
points.push(new OpenLayers.Geometry.Point(coords[1],
|
|
383
|
coords[0],
|
|
384
|
coords[2]));
|
|
385
|
}
|
|
386
|
}
|
|
387
|
}
|
|
388
|
}
|
|
389
|
|
|
390
|
var line = null;
|
|
391
|
if(points.length != 0) {
|
|
392
|
if(ring) {
|
|
393
|
line = new OpenLayers.Geometry.LinearRing(points);
|
|
394
|
} else {
|
|
395
|
line = new OpenLayers.Geometry.LineString(points);
|
|
396
|
}
|
|
397
|
}
|
|
398
|
return line;
|
|
399
|
},
|
|
400
|
|
|
401
|
/**
|
|
402
|
* Method: parseGeometry.multilinestring
|
|
403
|
* Given a GML node representing a multilinestring geometry, create an
|
|
404
|
* OpenLayers multilinestring geometry.
|
|
405
|
*
|
|
406
|
* Parameters:
|
|
407
|
* node - {DOMElement} A GML node.
|
|
408
|
*
|
|
409
|
* Returns:
|
|
410
|
* {<OpenLayers.Geometry.MultiLineString>} A multilinestring geometry.
|
|
411
|
*/
|
|
412
|
multilinestring: function(node) {
|
|
413
|
var nodeList = this.getElementsByTagNameNS(node, this.gmlns,
|
|
414
|
"LineString");
|
|
415
|
var components = [];
|
|
416
|
if(nodeList.length > 0) {
|
|
417
|
var line;
|
|
418
|
for(var i=0; i<nodeList.length; ++i) {
|
|
419
|
line = this.parseGeometry.linestring.apply(this,
|
|
420
|
[nodeList[i]]);
|
|
421
|
if(line) {
|
|
422
|
components.push(line);
|
|
423
|
}
|
|
424
|
}
|
|
425
|
}
|
|
426
|
return new OpenLayers.Geometry.MultiLineString(components);
|
|
427
|
},
|
|
428
|
|
|
429
|
/**
|
|
430
|
* Method: parseGeometry.polygon
|
|
431
|
* Given a GML node representing a polygon geometry, create an
|
|
432
|
* OpenLayers polygon geometry.
|
|
433
|
*
|
|
434
|
* Parameters:
|
|
435
|
* node - {DOMElement} A GML node.
|
|
436
|
*
|
|
437
|
* Returns:
|
|
438
|
* {<OpenLayers.Geometry.Polygon>} A polygon geometry.
|
|
439
|
*/
|
|
440
|
polygon: function(node) {
|
|
441
|
var nodeList = this.getElementsByTagNameNS(node, this.gmlns,
|
|
442
|
"LinearRing");
|
|
443
|
var components = [];
|
|
444
|
if(nodeList.length > 0) {
|
|
445
|
// this assumes exterior ring first, inner rings after
|
|
446
|
var ring;
|
|
447
|
for(var i=0; i<nodeList.length; ++i) {
|
|
448
|
ring = this.parseGeometry.linestring.apply(this,
|
|
449
|
[nodeList[i], true]);
|
|
450
|
if(ring) {
|
|
451
|
components.push(ring);
|
|
452
|
}
|
|
453
|
}
|
|
454
|
}
|
|
455
|
return new OpenLayers.Geometry.Polygon(components);
|
|
456
|
},
|
|
457
|
|
|
458
|
/**
|
|
459
|
* Method: parseGeometry.multipolygon
|
|
460
|
* Given a GML node representing a multipolygon geometry, create an
|
|
461
|
* OpenLayers multipolygon geometry.
|
|
462
|
*
|
|
463
|
* Parameters:
|
|
464
|
* node - {DOMElement} A GML node.
|
|
465
|
*
|
|
466
|
* Returns:
|
|
467
|
* {<OpenLayers.Geometry.MultiPolygon>} A multipolygon geometry.
|
|
468
|
*/
|
|
469
|
multipolygon: function(node) {
|
|
470
|
var nodeList = this.getElementsByTagNameNS(node, this.gmlns,
|
|
471
|
"Polygon");
|
|
472
|
var components = [];
|
|
473
|
if(nodeList.length > 0) {
|
|
474
|
var polygon;
|
|
475
|
for(var i=0; i<nodeList.length; ++i) {
|
|
476
|
polygon = this.parseGeometry.polygon.apply(this,
|
|
477
|
[nodeList[i]]);
|
|
478
|
if(polygon) {
|
|
479
|
components.push(polygon);
|
|
480
|
}
|
|
481
|
}
|
|
482
|
}
|
|
483
|
return new OpenLayers.Geometry.MultiPolygon(components);
|
|
484
|
},
|
|
485
|
|
|
486
|
envelope: function(node) {
|
|
487
|
var components = [];
|
|
488
|
var coordString;
|
|
489
|
var envelope;
|
|
490
|
|
|
491
|
var lpoint = this.getElementsByTagNameNS(node, this.gmlns, "lowerCorner");
|
|
492
|
if (lpoint.length > 0) {
|
|
493
|
var coords = [];
|
|
494
|
|
|
495
|
if(lpoint.length > 0) {
|
|
496
|
coordString = lpoint[0].firstChild.nodeValue;
|
|
497
|
coordString = coordString.replace(this.regExes.trimSpace, "");
|
|
498
|
coords = coordString.split(this.regExes.splitSpace);
|
|
499
|
}
|
|
500
|
|
|
501
|
if(coords.length == 2) {
|
|
502
|
coords[2] = null;
|
|
503
|
}
|
|
504
|
if (this.xy) {
|
|
505
|
var lowerPoint = new OpenLayers.Geometry.Point(coords[0], coords[1],coords[2]);
|
|
506
|
} else {
|
|
507
|
var lowerPoint = new OpenLayers.Geometry.Point(coords[1], coords[0],coords[2]);
|
|
508
|
}
|
|
509
|
}
|
|
510
|
|
|
511
|
var upoint = this.getElementsByTagNameNS(node, this.gmlns, "upperCorner");
|
|
512
|
if (upoint.length > 0) {
|
|
513
|
var coords = [];
|
|
514
|
|
|
515
|
if(upoint.length > 0) {
|
|
516
|
coordString = upoint[0].firstChild.nodeValue;
|
|
517
|
coordString = coordString.replace(this.regExes.trimSpace, "");
|
|
518
|
coords = coordString.split(this.regExes.splitSpace);
|
|
519
|
}
|
|
520
|
|
|
521
|
if(coords.length == 2) {
|
|
522
|
coords[2] = null;
|
|
523
|
}
|
|
524
|
if (this.xy) {
|
|
525
|
var upperPoint = new OpenLayers.Geometry.Point(coords[0], coords[1],coords[2]);
|
|
526
|
} else {
|
|
527
|
var upperPoint = new OpenLayers.Geometry.Point(coords[1], coords[0],coords[2]);
|
|
528
|
}
|
|
529
|
}
|
|
530
|
|
|
531
|
if (lowerPoint && upperPoint) {
|
|
532
|
components.push(new OpenLayers.Geometry.Point(lowerPoint.x, lowerPoint.y));
|
|
533
|
components.push(new OpenLayers.Geometry.Point(upperPoint.x, lowerPoint.y));
|
|
534
|
components.push(new OpenLayers.Geometry.Point(upperPoint.x, upperPoint.y));
|
|
535
|
components.push(new OpenLayers.Geometry.Point(lowerPoint.x, upperPoint.y));
|
|
536
|
components.push(new OpenLayers.Geometry.Point(lowerPoint.x, lowerPoint.y));
|
|
537
|
|
|
538
|
var ring = new OpenLayers.Geometry.LinearRing(components);
|
|
539
|
envelope = new OpenLayers.Geometry.Polygon([ring]);
|
|
540
|
}
|
|
541
|
return envelope;
|
|
542
|
},
|
|
543
|
|
|
544
|
/**
|
|
545
|
* Method: parseGeometry.box
|
|
546
|
* Given a GML node representing a box geometry, create an
|
|
547
|
* OpenLayers.Bounds.
|
|
548
|
*
|
|
549
|
* Parameters:
|
|
550
|
* node - {DOMElement} A GML node.
|
|
551
|
*
|
|
552
|
* Returns:
|
|
553
|
* {<OpenLayers.Bounds>} A bounds representing the box.
|
|
554
|
*/
|
|
555
|
box: function(node) {
|
|
556
|
var nodeList = this.getElementsByTagNameNS(node, this.gmlns,
|
|
557
|
"coordinates");
|
|
558
|
var coordString;
|
|
559
|
var coords, beginPoint = null, endPoint = null;
|
|
560
|
if (nodeList.length > 0) {
|
|
561
|
coordString = nodeList[0].firstChild.nodeValue;
|
|
562
|
coords = coordString.split(" ");
|
|
563
|
if (coords.length == 2) {
|
|
564
|
beginPoint = coords[0].split(",");
|
|
565
|
endPoint = coords[1].split(",");
|
|
566
|
}
|
|
567
|
}
|
|
568
|
if (beginPoint !== null && endPoint !== null) {
|
|
569
|
return new OpenLayers.Bounds(parseFloat(beginPoint[0]),
|
|
570
|
parseFloat(beginPoint[1]),
|
|
571
|
parseFloat(endPoint[0]),
|
|
572
|
parseFloat(endPoint[1]) );
|
|
573
|
}
|
|
574
|
}
|
|
575
|
|
|
576
|
},
|
|
577
|
|
|
578
|
/**
|
|
579
|
* Method: parseAttributes
|
|
580
|
*
|
|
581
|
* Parameters:
|
|
582
|
* node - {DOMElement}
|
|
583
|
*
|
|
584
|
* Returns:
|
|
585
|
* {Object} An attributes object.
|
|
586
|
*/
|
|
587
|
parseAttributes: function(node) {
|
|
588
|
var attributes = {};
|
|
589
|
// assume attributes are children of the first type 1 child
|
|
590
|
var childNode = node.firstChild;
|
|
591
|
var children, i, child, grandchildren, grandchild, name, value;
|
|
592
|
while(childNode) {
|
|
593
|
if(childNode.nodeType == 1) {
|
|
594
|
// attributes are type 1 children with one type 3 child
|
|
595
|
children = childNode.childNodes;
|
|
596
|
for(i=0; i<children.length; ++i) {
|
|
597
|
child = children[i];
|
|
598
|
if(child.nodeType == 1) {
|
|
599
|
grandchildren = child.childNodes;
|
|
600
|
if(grandchildren.length == 1) {
|
|
601
|
grandchild = grandchildren[0];
|
|
602
|
if(grandchild.nodeType == 3 ||
|
|
603
|
grandchild.nodeType == 4) {
|
|
604
|
name = (child.prefix) ?
|
|
605
|
child.nodeName.split(":")[1] :
|
|
606
|
child.nodeName;
|
|
607
|
value = grandchild.nodeValue.replace(
|
|
608
|
this.regExes.trimSpace, "");
|
|
609
|
attributes[name] = value;
|
|
610
|
}
|
|
611
|
} else {
|
|
612
|
// If child has no childNodes (grandchildren),
|
|
613
|
// set an attribute with null value.
|
|
614
|
// e.g. <prefix:fieldname/> becomes
|
|
615
|
// {fieldname: null}
|
|
616
|
attributes[child.nodeName.split(":").pop()] = null;
|
|
617
|
}
|
|
618
|
}
|
|
619
|
}
|
|
620
|
break;
|
|
621
|
}
|
|
622
|
childNode = childNode.nextSibling;
|
|
623
|
}
|
|
624
|
return attributes;
|
|
625
|
},
|
|
626
|
|
|
627
|
/**
|
|
628
|
* APIMethod: write
|
|
629
|
* Generate a GML document string given a list of features.
|
|
630
|
*
|
|
631
|
* Parameters:
|
|
632
|
* features - {Array(<OpenLayers.Feature.Vector>)} List of features to
|
|
633
|
* serialize into a string.
|
|
634
|
*
|
|
635
|
* Returns:
|
|
636
|
* {String} A string representing the GML document.
|
|
637
|
*/
|
|
638
|
write: function(features) {
|
|
639
|
if(!(OpenLayers.Util.isArray(features))) {
|
|
640
|
features = [features];
|
|
641
|
}
|
|
642
|
var gml = this.createElementNS("http://www.opengis.net/wfs",
|
|
643
|
"wfs:" + this.collectionName);
|
|
644
|
for(var i=0; i<features.length; i++) {
|
|
645
|
gml.appendChild(this.createFeatureXML(features[i]));
|
|
646
|
}
|
|
647
|
return OpenLayers.Format.XML.prototype.write.apply(this, [gml]);
|
|
648
|
},
|
|
649
|
|
|
650
|
/**
|
|
651
|
* Method: createFeatureXML
|
|
652
|
* Accept an OpenLayers.Feature.Vector, and build a GML node for it.
|
|
653
|
*
|
|
654
|
* Parameters:
|
|
655
|
* feature - {<OpenLayers.Feature.Vector>} The feature to be built as GML.
|
|
656
|
*
|
|
657
|
* Returns:
|
|
658
|
* {DOMElement} A node reprensting the feature in GML.
|
|
659
|
*/
|
|
660
|
createFeatureXML: function(feature) {
|
|
661
|
var geometry = feature.geometry;
|
|
662
|
var geometryNode = this.buildGeometryNode(geometry);
|
|
663
|
var geomContainer = this.createElementNS(this.featureNS,
|
|
664
|
this.featurePrefix + ":" +
|
|
665
|
this.geometryName);
|
|
666
|
geomContainer.appendChild(geometryNode);
|
|
667
|
var featureNode = this.createElementNS(this.gmlns,
|
|
668
|
"gml:" + this.featureName);
|
|
669
|
var featureContainer = this.createElementNS(this.featureNS,
|
|
670
|
this.featurePrefix + ":" +
|
|
671
|
this.layerName);
|
|
672
|
var fid = feature.fid || feature.id;
|
|
673
|
featureContainer.setAttribute("fid", fid);
|
|
674
|
featureContainer.appendChild(geomContainer);
|
|
675
|
for(var attr in feature.attributes) {
|
|
676
|
var attrText = this.createTextNode(feature.attributes[attr]);
|
|
677
|
var nodename = attr.substring(attr.lastIndexOf(":") + 1);
|
|
678
|
var attrContainer = this.createElementNS(this.featureNS,
|
|
679
|
this.featurePrefix + ":" +
|
|
680
|
nodename);
|
|
681
|
attrContainer.appendChild(attrText);
|
|
682
|
featureContainer.appendChild(attrContainer);
|
|
683
|
}
|
|
684
|
featureNode.appendChild(featureContainer);
|
|
685
|
return featureNode;
|
|
686
|
},
|
|
687
|
|
|
688
|
/**
|
|
689
|
* APIMethod: buildGeometryNode
|
|
690
|
*/
|
|
691
|
buildGeometryNode: function(geometry) {
|
|
692
|
if (this.externalProjection && this.internalProjection) {
|
|
693
|
geometry = geometry.clone();
|
|
694
|
geometry.transform(this.internalProjection,
|
|
695
|
this.externalProjection);
|
|
696
|
}
|
|
697
|
var className = geometry.CLASS_NAME;
|
|
698
|
var type = className.substring(className.lastIndexOf(".") + 1);
|
|
699
|
var builder = this.buildGeometry[type.toLowerCase()];
|
|
700
|
return builder.apply(this, [geometry]);
|
|
701
|
},
|
|
702
|
|
|
703
|
/**
|
|
704
|
* Property: buildGeometry
|
|
705
|
* Object containing methods to do the actual geometry node building
|
|
706
|
* based on geometry type.
|
|
707
|
*/
|
|
708
|
buildGeometry: {
|
|
709
|
// TBD retrieve the srs from layer
|
|
710
|
// srsName is non-standard, so not including it until it's right.
|
|
711
|
// gml.setAttribute("srsName",
|
|
712
|
// "http://www.opengis.net/gml/srs/epsg.xml#4326");
|
|
713
|
|
|
714
|
/**
|
|
715
|
* Method: buildGeometry.point
|
|
716
|
* Given an OpenLayers point geometry, create a GML point.
|
|
717
|
*
|
|
718
|
* Parameters:
|
|
719
|
* geometry - {<OpenLayers.Geometry.Point>} A point geometry.
|
|
720
|
*
|
|
721
|
* Returns:
|
|
722
|
* {DOMElement} A GML point node.
|
|
723
|
*/
|
|
724
|
point: function(geometry) {
|
|
725
|
var gml = this.createElementNS(this.gmlns, "gml:Point");
|
|
726
|
gml.appendChild(this.buildCoordinatesNode(geometry));
|
|
727
|
return gml;
|
|
728
|
},
|
|
729
|
|
|
730
|
/**
|
|
731
|
* Method: buildGeometry.multipoint
|
|
732
|
* Given an OpenLayers multipoint geometry, create a GML multipoint.
|
|
733
|
*
|
|
734
|
* Parameters:
|
|
735
|
* geometry - {<OpenLayers.Geometry.MultiPoint>} A multipoint geometry.
|
|
736
|
*
|
|
737
|
* Returns:
|
|
738
|
* {DOMElement} A GML multipoint node.
|
|
739
|
*/
|
|
740
|
multipoint: function(geometry) {
|
|
741
|
var gml = this.createElementNS(this.gmlns, "gml:MultiPoint");
|
|
742
|
var points = geometry.components;
|
|
743
|
var pointMember, pointGeom;
|
|
744
|
for(var i=0; i<points.length; i++) {
|
|
745
|
pointMember = this.createElementNS(this.gmlns,
|
|
746
|
"gml:pointMember");
|
|
747
|
pointGeom = this.buildGeometry.point.apply(this,
|
|
748
|
[points[i]]);
|
|
749
|
pointMember.appendChild(pointGeom);
|
|
750
|
gml.appendChild(pointMember);
|
|
751
|
}
|
|
752
|
return gml;
|
|
753
|
},
|
|
754
|
|
|
755
|
/**
|
|
756
|
* Method: buildGeometry.linestring
|
|
757
|
* Given an OpenLayers linestring geometry, create a GML linestring.
|
|
758
|
*
|
|
759
|
* Parameters:
|
|
760
|
* geometry - {<OpenLayers.Geometry.LineString>} A linestring geometry.
|
|
761
|
*
|
|
762
|
* Returns:
|
|
763
|
* {DOMElement} A GML linestring node.
|
|
764
|
*/
|
|
765
|
linestring: function(geometry) {
|
|
766
|
var gml = this.createElementNS(this.gmlns, "gml:LineString");
|
|
767
|
gml.appendChild(this.buildCoordinatesNode(geometry));
|
|
768
|
return gml;
|
|
769
|
},
|
|
770
|
|
|
771
|
/**
|
|
772
|
* Method: buildGeometry.multilinestring
|
|
773
|
* Given an OpenLayers multilinestring geometry, create a GML
|
|
774
|
* multilinestring.
|
|
775
|
*
|
|
776
|
* Parameters:
|
|
777
|
* geometry - {<OpenLayers.Geometry.MultiLineString>} A multilinestring
|
|
778
|
* geometry.
|
|
779
|
*
|
|
780
|
* Returns:
|
|
781
|
* {DOMElement} A GML multilinestring node.
|
|
782
|
*/
|
|
783
|
multilinestring: function(geometry) {
|
|
784
|
var gml = this.createElementNS(this.gmlns, "gml:MultiLineString");
|
|
785
|
var lines = geometry.components;
|
|
786
|
var lineMember, lineGeom;
|
|
787
|
for(var i=0; i<lines.length; ++i) {
|
|
788
|
lineMember = this.createElementNS(this.gmlns,
|
|
789
|
"gml:lineStringMember");
|
|
790
|
lineGeom = this.buildGeometry.linestring.apply(this,
|
|
791
|
[lines[i]]);
|
|
792
|
lineMember.appendChild(lineGeom);
|
|
793
|
gml.appendChild(lineMember);
|
|
794
|
}
|
|
795
|
return gml;
|
|
796
|
},
|
|
797
|
|
|
798
|
/**
|
|
799
|
* Method: buildGeometry.linearring
|
|
800
|
* Given an OpenLayers linearring geometry, create a GML linearring.
|
|
801
|
*
|
|
802
|
* Parameters:
|
|
803
|
* geometry - {<OpenLayers.Geometry.LinearRing>} A linearring geometry.
|
|
804
|
*
|
|
805
|
* Returns:
|
|
806
|
* {DOMElement} A GML linearring node.
|
|
807
|
*/
|
|
808
|
linearring: function(geometry) {
|
|
809
|
var gml = this.createElementNS(this.gmlns, "gml:LinearRing");
|
|
810
|
gml.appendChild(this.buildCoordinatesNode(geometry));
|
|
811
|
return gml;
|
|
812
|
},
|
|
813
|
|
|
814
|
/**
|
|
815
|
* Method: buildGeometry.polygon
|
|
816
|
* Given an OpenLayers polygon geometry, create a GML polygon.
|
|
817
|
*
|
|
818
|
* Parameters:
|
|
819
|
* geometry - {<OpenLayers.Geometry.Polygon>} A polygon geometry.
|
|
820
|
*
|
|
821
|
* Returns:
|
|
822
|
* {DOMElement} A GML polygon node.
|
|
823
|
*/
|
|
824
|
polygon: function(geometry) {
|
|
825
|
var gml = this.createElementNS(this.gmlns, "gml:Polygon");
|
|
826
|
var rings = geometry.components;
|
|
827
|
var ringMember, ringGeom, type;
|
|
828
|
for(var i=0; i<rings.length; ++i) {
|
|
829
|
type = (i==0) ? "outerBoundaryIs" : "innerBoundaryIs";
|
|
830
|
ringMember = this.createElementNS(this.gmlns,
|
|
831
|
"gml:" + type);
|
|
832
|
ringGeom = this.buildGeometry.linearring.apply(this,
|
|
833
|
[rings[i]]);
|
|
834
|
ringMember.appendChild(ringGeom);
|
|
835
|
gml.appendChild(ringMember);
|
|
836
|
}
|
|
837
|
return gml;
|
|
838
|
},
|
|
839
|
|
|
840
|
/**
|
|
841
|
* Method: buildGeometry.multipolygon
|
|
842
|
* Given an OpenLayers multipolygon geometry, create a GML multipolygon.
|
|
843
|
*
|
|
844
|
* Parameters:
|
|
845
|
* geometry - {<OpenLayers.Geometry.MultiPolygon>} A multipolygon
|
|
846
|
* geometry.
|
|
847
|
*
|
|
848
|
* Returns:
|
|
849
|
* {DOMElement} A GML multipolygon node.
|
|
850
|
*/
|
|
851
|
multipolygon: function(geometry) {
|
|
852
|
var gml = this.createElementNS(this.gmlns, "gml:MultiPolygon");
|
|
853
|
var polys = geometry.components;
|
|
854
|
var polyMember, polyGeom;
|
|
855
|
for(var i=0; i<polys.length; ++i) {
|
|
856
|
polyMember = this.createElementNS(this.gmlns,
|
|
857
|
"gml:polygonMember");
|
|
858
|
polyGeom = this.buildGeometry.polygon.apply(this,
|
|
859
|
[polys[i]]);
|
|
860
|
polyMember.appendChild(polyGeom);
|
|
861
|
gml.appendChild(polyMember);
|
|
862
|
}
|
|
863
|
return gml;
|
|
864
|
|
|
865
|
},
|
|
866
|
|
|
867
|
/**
|
|
868
|
* Method: buildGeometry.bounds
|
|
869
|
* Given an OpenLayers bounds, create a GML box.
|
|
870
|
*
|
|
871
|
* Parameters:
|
|
872
|
* bounds - {<OpenLayers.Geometry.Bounds>} A bounds object.
|
|
873
|
*
|
|
874
|
* Returns:
|
|
875
|
* {DOMElement} A GML box node.
|
|
876
|
*/
|
|
877
|
bounds: function(bounds) {
|
|
878
|
var gml = this.createElementNS(this.gmlns, "gml:Box");
|
|
879
|
gml.appendChild(this.buildCoordinatesNode(bounds));
|
|
880
|
return gml;
|
|
881
|
}
|
|
882
|
},
|
|
883
|
|
|
884
|
/**
|
|
885
|
* Method: buildCoordinates
|
|
886
|
* builds the coordinates XmlNode
|
|
887
|
* (code)
|
|
888
|
* <gml:coordinates decimal="." cs="," ts=" ">...</gml:coordinates>
|
|
889
|
* (end)
|
|
890
|
*
|
|
891
|
* Parameters:
|
|
892
|
* geometry - {<OpenLayers.Geometry>}
|
|
893
|
*
|
|
894
|
* Returns:
|
|
895
|
* {XmlNode} created xmlNode
|
|
896
|
*/
|
|
897
|
buildCoordinatesNode: function(geometry) {
|
|
898
|
var coordinatesNode = this.createElementNS(this.gmlns,
|
|
899
|
"gml:coordinates");
|
|
900
|
coordinatesNode.setAttribute("decimal", ".");
|
|
901
|
coordinatesNode.setAttribute("cs", ",");
|
|
902
|
coordinatesNode.setAttribute("ts", " ");
|
|
903
|
|
|
904
|
var parts = [];
|
|
905
|
|
|
906
|
if(geometry instanceof OpenLayers.Bounds){
|
|
907
|
parts.push(geometry.left + "," + geometry.bottom);
|
|
908
|
parts.push(geometry.right + "," + geometry.top);
|
|
909
|
} else {
|
|
910
|
var points = (geometry.components) ? geometry.components : [geometry];
|
|
911
|
for(var i=0; i<points.length; i++) {
|
|
912
|
parts.push(points[i].x + "," + points[i].y);
|
|
913
|
}
|
|
914
|
}
|
|
915
|
|
|
916
|
var txtNode = this.createTextNode(parts.join(" "));
|
|
917
|
coordinatesNode.appendChild(txtNode);
|
|
918
|
|
|
919
|
return coordinatesNode;
|
|
920
|
},
|
|
921
|
|
|
922
|
CLASS_NAME: "OpenLayers.Format.GML"
|
|
923
|
});
|