[jira] Resolved: (XERCESJ-1406) Performance: XMLSchemaValidator.findSchemaGrammar() called too often.

["Michael Glavassevich (JIRA)" <xe...@xml.apache.org>]

     [ https://issues.apache.org/jira/browse/XERCESJ-1406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Glavassevich resolved XERCESJ-1406.
-------------------------------------------

       Resolution: Fixed
    Fix Version/s: 2.10.0

Implemented in SVN rev 883581.

> Performance: XMLSchemaValidator.findSchemaGrammar() called too often.
> ---------------------------------------------------------------------
>
>                 Key: XERCESJ-1406
>                 URL: https://issues.apache.org/jira/browse/XERCESJ-1406
>             Project: Xerces2-J
>          Issue Type: Improvement
>          Components: XML Schema 1.0 Structures
>    Affects Versions: 2.9.1
>            Reporter: Michael Glavassevich
>            Assignee: Michael Glavassevich
>             Fix For: 2.10.0
>
>
> On every startElement() call we attempt to look-up a SchemaGrammar which is usually never read.  In the best case it's already in the XMLGrammarPool, but when we're processing local elements with no namespace we're likely to end up calling the EntityResolver over and over again (even when none is registered we always go through XMLEntityManager.resolveEntity()), attempting to load an empty XMLInputSource with the schema loader and after all that returning null back from the method.  That's a lot of wasted time.

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