HSQLDB:Tips and Tricks
From Apache OpenOffice Wiki
Revision as of 07:58, 18 September 2006 by Frank Schoenheit (Talk | contribs)
How to connect to a "normal" (not embedded) HSQL database?
- Connect via JDBC
- as driver class, use org.hsqldb.jdbcDriver
- enter the URL to your HSQL database as described in the HSQLDB documentation, and append
;default_schema=true
to the URL
How to migrate data between embedded and non-embedded HSQLDB?
TODO
How to know the version of the embedded HSQLDB?
You can determine the version of the embedded HSQLDB engine with the following Basic macro
[oobas]
Option Explicit
Sub hsqlVersion
Dim databaseURLOrRegisteredName As String databaseURLOrRegisteredName = "hsqldb" ' adjust this string to your needs. It needs to be the name of a registered database, ' or a complete URL
Dim databaseContext As Object databaseContext = createUnoService( "com.sun.star.sdb.DatabaseContext" )
Dim databaseDocument As Object databaseDocument = databaseContext.getByName( databaseURLOrRegisteredName )
Dim connection As Object connection = databaseDocument.getConnection( "", "" )
MsgBox "product version: " & connection.getMetaData().getDatabaseProductVersion()
connection.close
End Sub Note that this will give you a version number such as "1.8.0", but not "1.8.0.1".
The minor version can be obtained by issueing a SQL statement in the query designer's "Direct SQL" mode:
call "org.hsqldb.Library.getDatabaseFullProductVersion"()
will give you the full version. Drawbacks:
- This is only available in 1.8.0.5 and later
- in 1.8.0.5, it - wrongly - returns 1.8.0.4 :(