[XERCESJ-1701] Xerces-J 2.12.0: XSD 1.1 PK constraint scalability issue

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.12.0
• Fix Version/s: 2.12.0
• Component/s: JAXP (javax.xml.validation)
• Labels: XSD key
• Environment: Windows 10, 64-bit
• Assignee: Unassigned
• Reporter: Yitzhak Khabinsky
• Created: 06/Sep/18 17:47
• Updated: 21/Sep/18 05:20

Description

Hello,

A test case is very simple:

• XML file, size 700 MB
• XSD file

XSD is enforcing the following:

• XML structure
• Data elements/attributes data types
• PK constraint, composite primary key based on four elements
• No asserts/assertions/CTAs

<xs:key name="PK">
 <xs:selector xpath="r"/>
 <xs:field xpath="CountryCode"/>
 <xs:field xpath="Date"/>
 <xs:field xpath="AnalyticsArrangementKey"/>
 <xs:field xpath="PaymentType"/>
</xs:key>

 
Saxon Java EE runs XSD validation for 2 minutes
Xerces-J 2.12.0 cannot finish it at all, running for many hours.
If I comment out the xs:key constraint, Xerces has no problems to finish the validation.