Replace HSQL database by H2 for EPSG factory
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Key: GEOT-1430
URL: http://jira.codehaus.org/browse/GEOT-1430
Project: GeoTools
Issue Type: Improvement
Components: core referencing
Affects Versions: 2.5-M0
Reporter: Martin Desruisseaux
Assignee: Martin Desruisseaux
Priority: Minor
Fix For: 2.5.0
HSQL loads the full EPSG database in memory before usage, which is slow and
consume a lot of memory (4 Mb). H2 has been reported faster and more reasonable
on memory usage. Furthermore, H2 is under consideration for adoption by the
Geoserver project, and we will probably want to avoid usage of 2 database
engines in the same JVM.
Given that the H2 API is very close to the HSQL one, it should be easy to
switch from HSQL to H2. But we may need to wait for one remaining issue before
we can switch:
http://groups.google.com/group/h2-database/browse_frm/thread/ef14b5a50a3d8961
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