add parser for Sensor Observation Service GetFeatureOfInterest method, r=ahocevar (closes #2347)
git-svn-id: http://svn.openlayers.org/trunk/openlayers@9911 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
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bartvde
192
lib/OpenLayers/Format/SOSGetFeatureOfInterest.js
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192
lib/OpenLayers/Format/SOSGetFeatureOfInterest.js
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/* Copyright (c) 2006-2009 MetaCarta, Inc., published under the Clear BSD
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* license. 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/Format/GML/v3.js
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*/
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/**
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* Class: OpenLayers.Format.SOSGetFeatureOfInterest
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* Read and write SOS GetFeatureOfInterest. This is used to get to
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* the location of the features (stations). The stations can have 1 or more
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* sensors.
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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.SOSGetFeatureOfInterest = OpenLayers.Class(
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OpenLayers.Format.XML, {
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/**
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* Constant: VERSION
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* {String} 1.0.0
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*/
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VERSION: "1.0.0",
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/**
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* Property: namespaces
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* {Object} Mapping of namespace aliases to namespace URIs.
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*/
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namespaces: {
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sos: "http://www.opengis.net/sos/1.0",
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gml: "http://www.opengis.net/gml",
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sa: "http://www.opengis.net/sampling/1.0",
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xsi: "http://www.w3.org/2001/XMLSchema-instance"
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},
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/**
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* Property: schemaLocation
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* {String} Schema location
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*/
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schemaLocation: "http://www.opengis.net/sos/1.0 http://schemas.opengis.net/sos/1.0.0/sosAll.xsd",
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/**
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* Property: defaultPrefix
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*/
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defaultPrefix: "sos",
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/**
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* Property: regExes
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* Compiled regular expressions for manipulating strings.
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*/
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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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/**
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* Constructor: OpenLayers.Format.SOSGetFeatureOfInterest
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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: read
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* Parse a GetFeatureOfInterest response and return an array 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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if(data && data.nodeType == 9) {
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data = data.documentElement;
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}
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var info = {features: []};
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this.readNode(data, info);
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var features = [];
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for (var i=0, len=info.features.length; i<len; i++) {
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var container = info.features[i];
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// reproject features if needed
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if(this.internalProjection && this.externalProjection &&
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container.components[0]) {
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container.components[0].transform(
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this.externalProjection, this.internalProjection
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);
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}
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var feature = new OpenLayers.Feature.Vector(
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container.components[0], container.attributes);
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features.push(feature);
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}
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return features;
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},
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/**
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* Property: readers
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* Contains public functions, grouped by namespace prefix, that will
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* be applied when a namespaced node is found matching the function
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* name. The function will be applied in the scope of this parser
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* with two arguments: the node being read and a context object passed
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* from the parent.
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*/
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readers: {
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"sa": {
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"SamplingPoint": function(node, obj) {
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// sampling point can also be without a featureMember if
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// there is only 1
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if (!obj.attributes) {
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var feature = {attributes: {}};
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obj.features.push(feature);
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obj = feature;
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}
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obj.attributes.id = this.getAttributeNS(node,
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this.namespaces.gml, "id");
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this.readChildNodes(node, obj);
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},
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"position": function (node, obj) {
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this.readChildNodes(node, obj);
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}
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},
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"gml": OpenLayers.Util.applyDefaults({
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"FeatureCollection": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"featureMember": function(node, obj) {
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var feature = {attributes: {}};
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obj.features.push(feature);
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this.readChildNodes(node, feature);
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},
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"name": function(node, obj) {
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obj.attributes.name = this.getChildValue(node);
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},
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"pos": function(node, obj) {
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// we need to parse the srsName to get to the
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// externalProjection, that's why we cannot use
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// GML v3 for this
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if (!this.externalProjection) {
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this.externalProjection = new OpenLayers.Projection(
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node.getAttribute("srsName"));
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}
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OpenLayers.Format.GML.v3.prototype.readers.gml.pos.apply(
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this, [node, obj]);
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}
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}, OpenLayers.Format.GML.v3.prototype.readers.gml)
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},
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/**
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* Property: writers
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* As a compliment to the readers property, this structure contains public
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* writing functions grouped by namespace alias and named like the
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* node names they produce.
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*/
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writers: {
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"sos": {
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"GetFeatureOfInterest": function(options) {
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var node = this.createElementNSPlus("GetFeatureOfInterest", {
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attributes: {
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version: this.VERSION,
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service: 'SOS',
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"xsi:schemaLocation": this.schemaLocation
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}
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});
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for (var i=0, len=options.fois.length; i<len; i++) {
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this.writeNode("FeatureOfInterestId", {foi: options.fois[i]}, node);
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}
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return node;
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},
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"FeatureOfInterestId": function(options) {
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var node = this.createElementNSPlus("FeatureOfInterestId", {value: options.foi});
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return node;
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}
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}
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},
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CLASS_NAME: "OpenLayers.Format.SOSGetFeatureOfInterest"
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});
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