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https://issues.apache.org/jira/browse/XERCESJ-1406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Glavassevich updated XERCESJ-1406:
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Description: 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. (was:
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 a local elements with no namespace we're likely to end up
calling the EntityResolver over and over again (even when none is register 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.)
> 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
>
> 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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