PM02579: XSCHEMARESOLVER MAY BE CALLED EXCESSIVELY FOR A SCHEMA DOCUMENT WITH NO NAMESPACE.

APAR status

• Closed as program error.

Error description

• When an XSchemaResolver has been registered on the XFactory it
  may be called excessively to resolve a schema document with no
  namespace during the validation of an instance document. This
  may impact the overall performance of the application,
  particularly if the XSchemaResolver does a significant amount
  of work on each call.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of the IBM WebSphere Application  *
  *                  Server v7.0 Feature Pack for XML 1.0.       *
  ****************************************************************
  * PROBLEM DESCRIPTION: XSchemaResolver may be called           *
  *                      excessively for a schema document with  *
  *                      no namespace.                           *
  ****************************************************************
  * RECOMMENDATION:  Install a fix pack that contains this APAR. *
  ****************************************************************
  When an XSchemaResolver has been registered on the XFactory
  it may be called excessively to resolve a schema document with
  no namespace during the validation of an instance document.
  This may adversely impact the overall performance of the
  application, particularly if the document contains many
  elements with no namespace and the XSchemaResolver does a
  significant amount of work on each call.
  

Problem conclusion

• The XSchemaResolver provided by the application may be called
  during the validation of a document to return a list of
  schemas for a namespace it has not yet resolved. This call was
  occurring before first checking whether a local element
  declaration (with no namespace) was already available to the
  validator.
  
  The validator has been updated so that it will never call the
  XSchemaResolver for an element if an element declaration is
  already available in the schemas that have already been loaded.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 1.0.0.1. Please refer to the Recommended Updates
  page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  XML FEATUREPACK

• Fixed component ID

  5724J0856

Applicable component levels

• R700 PSY

     UP