https://bugs.documentfoundation.org/show_bug.cgi?id=140268
Bug ID: 140268
Summary: Adding jar for HSQLDB JDBC driver breaks embedded
HSQLDB
Product: LibreOffice
Version: 7.0.0.3 release
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Base
Assignee: [email protected]
Reporter: [email protected]
In order to connect to an external HSQLDB database via JDBC (e.g. a DB running
in server mode), I need to get a current HSQLDB JAR and add it to the
classpath, as for any JDBC driver.
However, when I do that and open a DB which uses the embedded HSQLDB engine, I
cannot access any tables, presumably due to a conflict between the two HSQL
versions—one that is bundled with LO for the embedded DB, and the other I need
for JDBC. If I need both use cases (external and embedded HSQLDB), I constantly
have to adapt my configuration, and it is impossible to open two different
kinds of DB side by side.
Granted, embedded HSQLDB is deprecated, but that doesn’t mean databases using
that engine are going away overnight—migration may be complex and require a lot
of manual intervention, so we’ll still need that support for quite a while.
However, I suppose the HSQLDB engine which ships with LO already includes a
JDBC driver (it’s bundled into the jar, unless you have made some heavy
modifications to it). So the solution would be to let the user to select that.
Users would be constrained to that particular version of HSQLDB, but that
should not be an issue when connecting to an instance running in server mode
(and that could be used as a workaround to access an external HSQLDB file which
is not compatible with the bundled HSQL version).
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