218 lines
6.5 KiB
JavaScript
218 lines
6.5 KiB
JavaScript
goog.provide('ol.format.GML2');
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goog.require('goog.asserts');
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goog.require('goog.dom');
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goog.require('goog.dom.NodeType');
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goog.require('ol.extent');
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goog.require('ol.format.GML');
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goog.require('ol.format.GMLBase');
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goog.require('ol.format.XSD');
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goog.require('ol.proj');
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goog.require('ol.xml');
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/**
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* @classdesc
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* Feature format for reading and writing data in the GML format,
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* version 2.1.2.
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*
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* @constructor
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* @param {olx.format.GMLOptions=} opt_options Optional configuration object.
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* @extends {ol.format.GMLBase}
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* @api
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*/
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ol.format.GML2 = function(opt_options) {
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var options = /** @type {olx.format.GMLOptions} */
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(goog.isDef(opt_options) ? opt_options : {});
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goog.base(this, options);
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/**
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* @inheritDoc
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*/
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this.schemaLocation = goog.isDef(options.schemaLocation) ?
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options.schemaLocation : ol.format.GML2.schemaLocation_;
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};
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goog.inherits(ol.format.GML2, ol.format.GMLBase);
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/**
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* @const
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* @type {string}
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* @private
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*/
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ol.format.GML2.schemaLocation_ = 'http://www.opengis.net/gml ' +
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'http://schemas.opengis.net/gml/2.1.2/feature.xsd';
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/**
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* @param {Node} node Node.
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* @param {Array.<*>} objectStack Object stack.
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* @private
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* @return {Array.<number>|undefined} Flat coordinates.
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*/
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ol.format.GML2.prototype.readFlatCoordinates_ = function(node, objectStack) {
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var s = ol.xml.getAllTextContent(node, false).replace(/^\s*|\s*$/g, '');
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var context = objectStack[0];
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goog.asserts.assert(goog.isObject(context));
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var containerSrs = context['srsName'];
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var containerDimension = node.parentNode.getAttribute('srsDimension');
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var axisOrientation = 'enu';
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if (!goog.isNull(containerSrs)) {
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var proj = ol.proj.get(containerSrs);
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axisOrientation = proj.getAxisOrientation();
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}
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var coords = s.split(/[\s,]+/);
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// The "dimension" attribute is from the GML 3.0.1 spec.
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var dim = 2;
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if (!goog.isNull(node.getAttribute('srsDimension'))) {
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dim = ol.format.XSD.readNonNegativeIntegerString(
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node.getAttribute('srsDimension'));
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} else if (!goog.isNull(node.getAttribute('dimension'))) {
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dim = ol.format.XSD.readNonNegativeIntegerString(
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node.getAttribute('dimension'));
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} else if (!goog.isNull(containerDimension)) {
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dim = ol.format.XSD.readNonNegativeIntegerString(containerDimension);
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}
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var x, y, z;
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var flatCoordinates = [];
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for (var i = 0, ii = coords.length; i < ii; i += dim) {
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x = parseFloat(coords[i]);
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y = parseFloat(coords[i + 1]);
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z = (dim === 3) ? parseFloat(coords[i + 2]) : 0;
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if (axisOrientation.substr(0, 2) === 'en') {
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flatCoordinates.push(x, y, z);
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} else {
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flatCoordinates.push(y, x, z);
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}
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}
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return flatCoordinates;
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};
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/**
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* @param {Node} node Node.
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* @param {Array.<*>} objectStack Object stack.
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* @private
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* @return {ol.Extent|undefined} Envelope.
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*/
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ol.format.GML2.prototype.readBox_ = function(node, objectStack) {
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goog.asserts.assert(node.nodeType == goog.dom.NodeType.ELEMENT);
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goog.asserts.assert(node.localName == 'Box');
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var flatCoordinates = ol.xml.pushParseAndPop(
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/** @type {Array.<number>} */ ([null]),
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this.BOX_PARSERS_, node, objectStack, this);
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return ol.extent.createOrUpdate(flatCoordinates[1][0],
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flatCoordinates[1][1], flatCoordinates[1][3],
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flatCoordinates[1][4]);
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};
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/**
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* @param {Node} node Node.
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* @param {Array.<*>} objectStack Object stack.
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* @private
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*/
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ol.format.GML2.prototype.innerBoundaryIsParser_ =
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function(node, objectStack) {
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goog.asserts.assert(node.nodeType == goog.dom.NodeType.ELEMENT);
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goog.asserts.assert(node.localName == 'innerBoundaryIs');
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var flatLinearRing = ol.xml.pushParseAndPop(
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/** @type {Array.<number>|undefined} */ (undefined),
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this.RING_PARSERS, node, objectStack, this);
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if (goog.isDef(flatLinearRing)) {
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var flatLinearRings = /** @type {Array.<Array.<number>>} */
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(objectStack[objectStack.length - 1]);
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goog.asserts.assert(goog.isArray(flatLinearRings));
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goog.asserts.assert(flatLinearRings.length > 0);
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flatLinearRings.push(flatLinearRing);
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}
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};
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/**
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* @param {Node} node Node.
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* @param {Array.<*>} objectStack Object stack.
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* @private
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*/
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ol.format.GML2.prototype.outerBoundaryIsParser_ =
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function(node, objectStack) {
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goog.asserts.assert(node.nodeType == goog.dom.NodeType.ELEMENT);
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goog.asserts.assert(node.localName == 'outerBoundaryIs');
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var flatLinearRing = ol.xml.pushParseAndPop(
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/** @type {Array.<number>|undefined} */ (undefined),
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this.RING_PARSERS, node, objectStack, this);
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if (goog.isDef(flatLinearRing)) {
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var flatLinearRings = /** @type {Array.<Array.<number>>} */
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(objectStack[objectStack.length - 1]);
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goog.asserts.assert(goog.isArray(flatLinearRings));
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goog.asserts.assert(flatLinearRings.length > 0);
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flatLinearRings[0] = flatLinearRing;
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}
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};
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/**
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* @const
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* @type {Object.<string, Object.<string, ol.xml.Parser>>}
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* @private
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*/
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ol.format.GML2.prototype.GEOMETRY_FLAT_COORDINATES_PARSERS_ = Object({
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'http://www.opengis.net/gml' : {
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'coordinates': ol.xml.makeReplacer(
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ol.format.GML2.prototype.readFlatCoordinates_)
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}
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});
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/**
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* @const
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* @type {Object.<string, Object.<string, ol.xml.Parser>>}
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* @private
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*/
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ol.format.GML2.prototype.FLAT_LINEAR_RINGS_PARSERS_ = Object({
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'http://www.opengis.net/gml' : {
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'innerBoundaryIs': ol.format.GML2.prototype.innerBoundaryIsParser_,
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'outerBoundaryIs': ol.format.GML2.prototype.outerBoundaryIsParser_
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}
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});
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/**
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* @const
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* @type {Object.<string, Object.<string, ol.xml.Parser>>}
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* @private
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*/
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ol.format.GML2.prototype.BOX_PARSERS_ = Object({
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'http://www.opengis.net/gml' : {
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'coordinates': ol.xml.makeArrayPusher(
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ol.format.GML2.prototype.readFlatCoordinates_)
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}
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});
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/**
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* @const
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* @type {Object.<string, Object.<string, ol.xml.Parser>>}
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* @private
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*/
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ol.format.GML2.prototype.GEOMETRY_PARSERS_ = Object({
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'http://www.opengis.net/gml' : {
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'Point': ol.xml.makeReplacer(ol.format.GMLBase.prototype.readPoint),
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'MultiPoint': ol.xml.makeReplacer(
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ol.format.GMLBase.prototype.readMultiPoint),
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'LineString': ol.xml.makeReplacer(
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ol.format.GMLBase.prototype.readLineString),
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'MultiLineString': ol.xml.makeReplacer(
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ol.format.GMLBase.prototype.readMultiLineString),
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'LinearRing' : ol.xml.makeReplacer(
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ol.format.GMLBase.prototype.readLinearRing),
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'Polygon': ol.xml.makeReplacer(ol.format.GMLBase.prototype.readPolygon),
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'MultiPolygon': ol.xml.makeReplacer(
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ol.format.GMLBase.prototype.readMultiPolygon),
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'Box': ol.xml.makeReplacer(ol.format.GML2.prototype.readBox_)
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}
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});
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