hive-helper.js
43095f57cc20master

hive-helper.js
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			var helper;
			var window;

			function HiveHelper(i2b2Window) {
			window = i2b2Window;
			}

			HiveHelper.prototype.parseXml = parseXml;
			HiveHelper.prototype.xPath = xPath;
			HiveHelper.prototype.getXNodeVal = getXNodeVal;


			/**
			*
			*/
			function parseXml(xmlString) {
			var domParser = new window.DOMParser();
			var xmlDoc = domParser.parseFromString(xmlString, 'text/xml');
			return xmlDoc;
			}

			/**
			*
			*/
			function xPath(xmlDoc, path) {
			var retArray = [];

			var nodes = window.document.evaluate(path, xmlDoc, null, 0, null);

			// -- traverse node -- //
			var rec = nodes.iterateNext();
			while (rec) {
			retArray.push(rec);
			rec = nodes.iterateNext();
			}

			return retArray;
			}

			/**
			*
			*/
			function getXNodeVal(xmlElement, nodeName, includeChildren) {
			var gotten = xPath(xmlElement, 'descendant-or-self::' + nodeName + '/text()');
			var final = '';

			if (gotten.length > 0) {

			if (includeChildren === true) {
			for (var i = 0; i < gotten.length; i++) {
			final += gotten[i].nodeValue;
			}
			}
			else {
			final = gotten[0].nodeValue;
			}
			}
			else {
			final = undefined;
			}
			return final;
			}

			// -- instance based --//
			module.exports = HiveHelper;