[XERCESJ-1705] Validation against asserts (1.1) is slow and takes up a lot of memory for larger files.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Later
• Affects Version/s: 2.12.0
• Component/s: XML Schema 1.1 Structures
• Assignee: Unassigned
• Reporter: Gerben Abbink
• Created: 10/Jan/19 17:19
• Updated: 21/Jan/19 13:33
• Resolved: 21/Jan/19 09:18

Description

The validation of xml against asserts in XMLSchema 1.1 is slow and takes up a lot of memory for larger xml files. I have created a simple test xml file with lots of repetition and a corresponding xml schema to show the problem.

It takes 20 sec. to validate the xml against the xml schema. When i remove the asserts in the xml schema it takes just 1 second to validate. Testing was done from the command prompt on a modern Windows machine with 8GByte memory.

To compare, i have also validated the xml file against the xml schema in XMLSpy. With asserts it takes 2 sec., without the asserts 1 sec. (XMLSpy does not uses Xerces.)