openlayers/lib/OpenLayers/Format/WCSCapabilities/v1_0_0.js

/* Copyright (c) 2006-2012 by OpenLayers Contributors (see authors.txt for 
 * full list of contributors). Published under the 2-clause BSD license.
 * See license.txt in the OpenLayers distribution or repository for the
 * full text of the license. */

/**
 * @requires OpenLayers/Format/WCSCapabilities/v1.js
 */

/**
 * Class: OpenLayers.Format.WCSCapabilities/v1_0_0
 * Read WCS Capabilities version 1.0.0.
 * 
 * Inherits from:
 *  - <OpenLayers.Format.WCSCapabilities.v1>
 */
OpenLayers.Format.WCSCapabilities.v1_0_0 = OpenLayers.Class(
    OpenLayers.Format.WCSCapabilities.v1, {
    
    /**
     * Constructor: OpenLayers.Format.WCSCapabilities.v1_0_0
     * Create a new parser for WCS capabilities version 1.0.0.
     *
     * Parameters:
     * options - {Object} An optional object whose properties will be set on
     *     this instance.
     */


    /**
     * Property: namespaces
     * {Object} Mapping of namespace aliases to namespace URIs.
     */
    namespaces: {
        wcs: "http://www.opengis.net/wcs",
        xlink: "http://www.w3.org/1999/xlink",
        xsi: "http://www.w3.org/2001/XMLSchema-instance",
        ows: "http://www.opengis.net/ows"
    },


    /**
     * Property: errorProperty
     * {String} Which property of the returned object to check for in order to
     * determine whether or not parsing has failed. In the case that the
     * errorProperty is undefined on the returned object, the document will be
     * run through an OGCExceptionReport parser.
     */
    errorProperty: "service",


    /**
     * Property: readers
     * Contains public functions, grouped by namespace prefix, that will
     *     be applied when a namespaced node is found matching the function
     *     name.  The function will be applied in the scope of this parser
     *     with two arguments: the node being read and a context object passed
     *     from the parent.
     */
    readers: {
        "wcs": OpenLayers.Util.applyDefaults({
             "WCS_Capabilities": function(node, obj) {          
                this.readChildNodes(node, obj);
            },
            "Service": function(node, obj) {
                obj.service = {};
                this.readChildNodes(node, obj.service);
            },
            "name": function(node, service) {  
                service.name = this.getChildValue(node);
            },
            "label": function(node, service) {  
                service.label = this.getChildValue(node);
            },
            "keywords": function(node, service) { 
                service.keywords = []; 
                this.readChildNodes(node, service.keywords);
            },
            "keyword": function(node, keywords) { 
                // Append the keyword to the keywords list
                keywords.push(this.getChildValue(node));      
            },
            "responsibleParty": function(node, service) {
                service.responsibleParty = {};
                this.readChildNodes(node, service.responsibleParty);   
            },
            "individualName": function(node, responsibleParty) {
                responsibleParty.individualName = this.getChildValue(node);
            },
            "organisationName": function(node, responsibleParty) {
                responsibleParty.organisationName = this.getChildValue(node);
            },
            "positionName": function(node, responsibleParty) {
                responsibleParty.positionName = this.getChildValue(node);
            },
            "contactInfo": function(node, responsibleParty) {
                responsibleParty.contactInfo = {};
                this.readChildNodes(node, responsibleParty.contactInfo);
            },
            "phone": function(node, contactInfo) {
                contactInfo.phone = {};
                this.readChildNodes(node, contactInfo.phone);
            },
            "voice": function(node, phone) {
                phone.voice = this.getChildValue(node);
            },
            "facsimile": function(node, phone) {
                phone.facsimile = this.getChildValue(node);
            },
            "address": function(node, contactInfo) {
                contactInfo.address = {};
                this.readChildNodes(node, contactInfo.address);
            },
            "deliveryPoint": function(node, address) {
                address.deliveryPoint = this.getChildValue(node);
            },
            "city": function(node, address) {
                address.city = this.getChildValue(node);
            },
            "postalCode": function(node, address) {
                address.postalCode = this.getChildValue(node);
            },
            "country": function(node, address) {
                address.country = this.getChildValue(node);
            },
            "electronicMailAddress": function(node, address) {
                address.electronicMailAddress = this.getChildValue(node);
            },
            "fees": function(node, service) {
                service.fees = this.getChildValue(node);
            },
            "accessConstraints": function(node, service) {
                service.accessConstraints = this.getChildValue(node);
            },
            "ContentMetadata": function(node, obj) {
                obj.contentMetadata = [];
                this.readChildNodes(node, obj.contentMetadata);
            },
            "CoverageOfferingBrief": function(node, contentMetadata) {
                var coverageOfferingBrief = {};
                this.readChildNodes(node, coverageOfferingBrief);
                contentMetadata.push(coverageOfferingBrief);
            },
            "name": function(node, coverageOfferingBrief) {
                coverageOfferingBrief.name = this.getChildValue(node);
            },
            "label": function(node, coverageOfferingBrief) {
                coverageOfferingBrief.label = this.getChildValue(node);
            },
            "lonLatEnvelope": function(node, coverageOfferingBrief) {

               // Look for <gml:pos>.  Only write the data if everything parsed neatly.
               // This works well for the data samples I have access to, but may need to be generalized to cover other possible use cases.
                var nodeList = this.getElementsByTagNameNS(node, "http://www.opengis.net/gml", "pos");

                // We expect two nodes here, to create the corners of a bounding box
                if(nodeList.length == 2) {
                    var min = {}, 
                        max = {};

                    var ok = true;

                    // min    
                    var coordString = nodeList[0].firstChild.nodeValue;

                    coordString = coordString.replace(this.regExes.trimSpace, "");
                    var coords = coordString.split(this.regExes.splitSpace);

                    if(coords.length == 2) {
                        min.lon = coords[0];
                        min.lat = coords[1];
                    } else {
                        ok = false;
                    }

                    // max
                    var coordString = nodeList[1].firstChild.nodeValue;

                    coordString = coordString.replace(this.regExes.trimSpace, "");
                    var coords = coordString.split(this.regExes.splitSpace);

                    if(coords.length == 2) {
                        max.lon = coords[0];
                        max.lat = coords[1];
                    } else {
                        ok = false;
                    }

                    if(ok) {
                        coverageOfferingBrief.lonLatEnvelope = {};
                        coverageOfferingBrief.lonLatEnvelope.srsName = node.getAttribute("srsName");
                        coverageOfferingBrief.lonLatEnvelope.min = min;
                        coverageOfferingBrief.lonLatEnvelope.max = max;
                    }
                }
            },
        }, OpenLayers.Format.WCSCapabilities.v1.prototype.readers["wcs"])
    },
    
    CLASS_NAME: "OpenLayers.Format.WCSCapabilities.v1_0_0" 

});