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/* Copyright (c) 2006-2013 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/GML/Base.js
*/
/**
* Class: OpenLayers.Format.GML.v2
* Parses GML version 2.
*
* Inherits from:
* - <OpenLayers.Format.GML.Base>
*/
OpenLayers.Format.GML.v2 = OpenLayers.Class(OpenLayers.Format.GML.Base, {
/**
* Property: schemaLocation
* {String} Schema location for a particular minor version.
*/
schemaLocation: "http://www.opengis.net/gml http://schemas.opengis.net/gml/2.1.2/feature.xsd",
/**
* Constructor: OpenLayers.Format.GML.v2
* Create a parser for GML v2.
*
* Parameters:
* options - {Object} An optional object whose properties will be set on
* this instance.
*
* Valid options properties:
* featureType - {String} Local (without prefix) feature typeName (required).
* featureNS - {String} Feature namespace (required).
* geometryName - {String} Geometry element name.
*/
initialize: function(options) {
OpenLayers.Format.GML.Base.prototype.initialize.apply(this, [options]);
},
/**
* 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: {
"gml": OpenLayers.Util.applyDefaults({
"outerBoundaryIs": function(node, container) {
var obj = {};
this.readChildNodes(node, obj);
container.outer = obj.components[0];
},
"innerBoundaryIs": function(node, container) {
var obj = {};
this.readChildNodes(node, obj);
container.inner.push(obj.components[0]);
},
"Box": function(node, container) {
var obj = {};
this.readChildNodes(node, obj);
if(!container.components) {
container.components = [];
}
var min = obj.points[0];
var max = obj.points[1];
container.components.push(
new OpenLayers.Bounds(min.x, min.y, max.x, max.y)
);
}
}, OpenLayers.Format.GML.Base.prototype.readers["gml"]),
"feature": OpenLayers.Format.GML.Base.prototype.readers["feature"],
"wfs": OpenLayers.Format.GML.Base.prototype.readers["wfs"]
},
/**
* Method: write
*
* Parameters:
* features - {Array(<OpenLayers.Feature.Vector>) | OpenLayers.Feature.Vector}
* An array of features or a single feature.
*
* Returns:
* {String} Given an array of features, a doc with a gml:featureMembers
* element will be returned. Given a single feature, a doc with a
* gml:featureMember element will be returned.
*/
write: function(features) {
var name;
if(OpenLayers.Util.isArray(features)) {
// GML2 only has abstract feature collections
// wfs provides a feature collection from a well-known schema
name = "wfs:FeatureCollection";
} else {
name = "gml:featureMember";
}
var root = this.writeNode(name, features);
this.setAttributeNS(
root, this.namespaces["xsi"],
"xsi:schemaLocation", this.schemaLocation
);
return OpenLayers.Format.XML.prototype.write.apply(this, [root]);
},
/**
* Property: writers
* As a compliment to the readers property, this structure contains public
* writing functions grouped by namespace alias and named like the
* node names they produce.
*/
writers: {
"gml": OpenLayers.Util.applyDefaults({
"Point": function(geometry) {
var node = this.createElementNSPlus("gml:Point");
this.writeNode("coordinates", [geometry], node);
return node;
},
"coordinates": function(points) {
var numPoints = points.length;
var parts = new Array(numPoints);
var point;
for(var i=0; i<numPoints; ++i) {
point = points[i];
if(this.xy) {
parts[i] = point.x + "," + point.y;
} else {
parts[i] = point.y + "," + point.x;
}
if(point.z != undefined) { // allow null or undefined
parts[i] += "," + point.z;
}
}
return this.createElementNSPlus("gml:coordinates", {
attributes: {
decimal: ".", cs: ",", ts: " "
},
value: (numPoints == 1) ? parts[0] : parts.join(" ")
});
},
"LineString": function(geometry) {
var node = this.createElementNSPlus("gml:LineString");
this.writeNode("coordinates", geometry.components, node);
return node;
},
"Polygon": function(geometry) {
var node = this.createElementNSPlus("gml:Polygon");
this.writeNode("outerBoundaryIs", geometry.components[0], node);
for(var i=1; i<geometry.components.length; ++i) {
this.writeNode(
"innerBoundaryIs", geometry.components[i], node
);
}
return node;
},
"outerBoundaryIs": function(ring) {
var node = this.createElementNSPlus("gml:outerBoundaryIs");
this.writeNode("LinearRing", ring, node);
return node;
},
"innerBoundaryIs": function(ring) {
var node = this.createElementNSPlus("gml:innerBoundaryIs");
this.writeNode("LinearRing", ring, node);
return node;
},
"LinearRing": function(ring) {
var node = this.createElementNSPlus("gml:LinearRing");
this.writeNode("coordinates", ring.components, node);
return node;
},
"Box": function(bounds) {
var node = this.createElementNSPlus("gml:Box");
this.writeNode("coordinates", [
{x: bounds.left, y: bounds.bottom},
{x: bounds.right, y: bounds.top}
], node);
// srsName attribute is optional for gml:Box
if(this.srsName) {
node.setAttribute("srsName", this.srsName);
}
return node;
}
}, OpenLayers.Format.GML.Base.prototype.writers["gml"]),
"feature": OpenLayers.Format.GML.Base.prototype.writers["feature"],
"wfs": OpenLayers.Format.GML.Base.prototype.writers["wfs"]
},
CLASS_NAME: "OpenLayers.Format.GML.v2"
});
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