It is not possible to use request parameters as a variable in JdbcDataSource.
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Patch with the fix.
Updated to resolve variables once again before a connection is created. I'll commit this shortly.
Committed revision 756340.
Fixing a bug with resolving batchSize parameter in JdbcDataSource introduced by the last commit.
Committed revision 765481.
JNDI name is not resolved
Resolve all variables before extracting jndi name
Committed revision 771656.
Bulk close for Solr 1.4