XQL doesn't seem to handle the | (union) operator

General
1

The XPath 1.0 reference describes the | operator (xpath cover page - W3C) as the “union” operator.

So the following syntax //AAA|//BBB should return the nodes that match //AAA and //BBB. But it seems that it only returns the ones matching //AAA

The syntax seems to be accepted as it doesn’t raise an XMLException (wrong expression syntax) but the XQL method doesn’t handle it as it should…

Am I wrong ?

By the way I created a Feedback case <https://xojo.com/issue/51390>

2

I suggest you make a small test project that confirm the problem, and upload it to feedback.
it seems not so, Xojo team will ask you soon.

3

your suggestion was more than good !
while making a little test app I make it work !
So the issue is not where I thought…

The issue happens on a XML document build from scratch.
But if I create a new XML document from the toString method of the previous one, the xql query (with |) works !

Thai is strange… I have to digg more…

Thank you.

I am going to suppress the Feedback case.

4

Well, I think I found the bug…

with this very simple XML Document :

<?xml version="1.0" encoding="UTF-8"?> <AAA> <BBB/> <CCC/> <DDD> <CCC/> </DDD> <EEE/> </AAA>

if the XmlDocument instance if created by parsing the xml string (in the constructor), the XQL union operator runs well (/AAA/EEE | //BBB for instance)

But, when the same XmlDocument instance if built “manually” from code like so :

dim xml2 as new XmlDocument dim root as XmlNode = xml2.AppendChild(xml2.CreateElement("AAA")) root.AppendChild(xml2.CreateElement("BBB")) root.AppendChild(xml2.CreateElement("CCC")) dim ddd as XmlNode = xml2.CreateElement("DDD") root.AppendChild(ddd) ddd.AppendChild(xml2.CreateElement("CCC")) root.AppendChild(xml2.CreateElement("EEE"))

the XQL union operator doesn’t work anymore (/AAA/EEE | //BBB)

I created a Feedback case with a test app that shows the issue (<https://xojo.com/issue/51393>) …