selectSingleNode not returning element...

[schu777]

I've got a simple test case and it doesn't return the element - I'm confused of what could be wrong.

Any ideas of what could be wrong? Incorrect?

Thanks, Michael

Code:

	public void quickTest()
	{
		String lXml = "<OTA_HotelDescriptiveContentNotifRQ xmlns=\"http://www.opentravel.org/OTA/2003/05\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" Version=\"4.000\" PrimaryLangID=\"EN\"><HotelDescriptiveContents><HotelDescriptiveContent><HotelInfo><CategoryCodes><LocationCategory Code=\"10\" CodeDetail=\"This hotel is a resort.\" Removal=\"False\"/><SegmentCategory Code=\"1\" Removal=\"False\"/><HotelCategory Code=\"20\" Removal=\"False\"/><GuestRoomInfo Code=\"2\" CodeDetail=\"Non Smoking Rooms\" Removal=\"False\" Quantity=\"220\"/><GuestRoomInfo Code=\"1\" CodeDetail=\"Accessible Rooms\" Removal=\"False\" Quantity=\"5\"/><GuestRoomInfo Code=\"12\" CodeDetail=\"Total number of rooms\" Removal=\"False\" Quantity=\"258\"/><GuestRoomInfo Code=\"5\" CodeDetail=\"Total number of floors\" Removal=\"False\" Quantity=\"13\"/></CategoryCodes><Position Latitude=\"3213.23131\" Longitude=\"321.2132\"/><Services><Service Included=\"TRUE\" Code=\"113\" Removal=\"False\" ProximityCode=\"4\"/><Service Code=\"114\" Removal=\"False\" ProximityCode=\"1\"/><Service Code=\"115\" Removal=\"False\" ProximityCode=\"1\"/><Service Code=\"117\" Removal=\"False\" ProximityCode=\"1\"/><Service Code=\"1\" Removal=\"False\" ProximityCode=\"1\"/><Service Code=\"2\" Removal=\"False\" ProximityCode=\"2\"/><Service Code=\"3\" Removal=\"False\" ProximityCode=\"2\"/><Service Code=\"116\" Removal=\"False\" ProximityCode=\"1\"/><Service Code=\"6\" Removal=\"False\" ProximityCode=\"1\"/><Service Code=\"156\" Removal=\"False\" ProximityCode=\"1\"/><Service Code=\"4\" Removal=\"False\" ProximityCode=\"2\"/></Services><Languages><Languages LanguageCode=\"DE\"/></Languages></HotelInfo><FacilityInfo><MeetingRooms><MeetingRoom RoomName=\"Champagne Ballroom\" Removal=\"False\" ID=\"001\"><Dimension Area=\"5500\" Height=\"12\"/><AvailableCapacities><MeetingRoomCapacity MeetingRoomFormatCode=\"1\"><Occupancy MaxOccupancy=\"400\"/></MeetingRoomCapacity><MeetingRoomCapacity MeetingRoomFormatCode=\"8\"><Occupancy MaxOccupancy=\"500\"/></MeetingRoomCapacity></AvailableCapacities></MeetingRoom></MeetingRooms></FacilityInfo></HotelDescriptiveContent></HotelDescriptiveContents></OTA_HotelDescriptiveContentNotifRQ>";
		try
		{
			Document lDocument = DocumentHelper.parseText(lXml);
			Element lTest = (Element)lDocument.getRootElement().selectSingleNode("//HotelDescriptiveContents");
			Log.info("lTest", "test");
		}
		catch (DocumentException pException)
		{
			Log.info("Exception: ", pException.toString());
		}
	}

[brianhks]

If I didn't know better I would say that code is C# and not Java. Am I correct? Just in case it was missed this is a Java forum.

[schu777]

Well - it is java. Just some some method calls that my work uses to log out information...I didn't include the whole class, can if needed. The main thing this is using is Dom4j - so perhaps that is what is confusing...

[brianhks]

I've never given Dom4j much thought as there is an XML parser built in to Java. Now having a look I like it's API set much better than the standard DOM. It was parseText that threw me off. C# uses that.

Anyway as to your problem. I think it has to do with namespaces. The node you are looking for has a namespace but the XPath query does not have a namespace.

I think the solution is to add the namespace with a prefix to the document. Then use that prefix in your XPath query. Unfortunately I'm not sure how to do this.

[schu777]

Cool - I'll take a stab at that and post the results if I get any positive ones that is...

Thanks, Michael