DocumentDB facade (wrapper)

azureDocDBHelper.js

//Constructor
function AzureDbHelper(databaseName, collectionName){
	var _this = this;
	if(!this.database || !this.collection) {
		readOrCreateDatabase(databaseName, function (error, database) {
			if (error) {
				//throw new Error(error);
        			return;
			}
			_this.database = database;
			_this._readOrCreateCollection(_this.database, collectionName, function (error, collection) {
				if (error) {
					//throw new Error(error);
				}
				_this.collection = collection;
			});
		});
	}
};