[fdo-trac] #744: RDBMS: Incremental DescribeSchema tuning.
FDO
trac_fdo at osgeo.org
Mon Jan 31 15:52:21 EST 2011
#744: RDBMS: Incremental DescribeSchema tuning.
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Reporter: brentrobinson | Owner: brentrobinson
Type: enhancement | Status: new
Priority: major | Milestone: 3.6.0
Component: GenericRdbms API | Version: 3.6.0
Severity: 3 | Keywords: incremental DescribeSchema performance
External_id: |
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The following sequence of steps:
- execute FdoIGetClassNames
- execute FdoIDescribeSchema for a list of classes
can be slow because the FdoIDescribeSchema step ends up fetching the
classes one table or view at a time from the RDBMS server.
For example, for the SQLServerSpatial provider, describing 20 feature
classes from a 1500 class local datastore takes 8 seconds.
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Ticket URL: <http://trac.osgeo.org/fdo/ticket/744>
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