Avoid holding a reference to SeRasterAttr in ArcSDERasterGridCoverage2DReader
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Key: GEOT-2302
URL: http://jira.codehaus.org/browse/GEOT-2302
Project: GeoTools
Issue Type: Improvement
Components: data arcsde
Affects Versions: 2.5.2
Reporter: Gabriel Roldán
Assignee: Gabriel Roldán
Fix For: 2.5.3
{{ArcSDERasterGridCoverage2DReader}} holds a {{SeRasterAttr}} as instance
variable, but {{SeRasterAttr}} holds a reference to the {{SeConnection}} it was
created with, and surely it uses it for some operations like {{getBands()}},
{{getRasterInfo}}, etc.
This is potential source of problems since the SeConnection we use is a pooled
one, and hence it should be used in the smallest execution units possible and
then returned to the pool, but the instance variable holding a reference to a
connection already returned to the pool may lead to unpredictable issues.
The approach is to hold enough metadata as simple objects as to get the
{{SeRasterAttr}} for the raster when its needed and then discard it, returning
the SeConnection to the pool with confidence it's not going to be used without
our concent.
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