[JXPATH-100] Core union operation does not sort result nodes according to document order

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2 Final, Nightly Builds
• Fix Version/s: 1.3
• Assignee: Unassigned
• Reporter: Sergey Vladimirov
• Created: 19/Aug/07 10:54
• Updated: 27/Aug/07 19:53
• Resolved: 27/Aug/07 19:53

Description

Source document:
<MAIN><A>avalue</A><B>bvalue</B></MAIN>

According to string() function defintion:
"A node-set is converted to a string by returning the string-value of the node in the node-set that is first in document order. If the node-set is empty, an empty string is returned."

Following XPath calculated incorrectly:
string(/MAIN/B | /MAIN/A)

Expected result: "avalue"
Actual value: "bvalue"

Reason:
sorting of result nodes is missing from CoreOperationUnion