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jdbc: metadata: ParameterMetaData support #173
Description
The JDBC compliance requires java.sql.ParameterMetaData to be fully implemented.
This issue is about describing Inputs of a PreparedStatement Object and optionally of a CallableStatement.
The method PreparedStatement.getParameterMetaData returns a ParameterMetaData object describing the parameter markers that appear in the PreparedStatement object. Methods in the ParameterMetaData interface provide information about the number of parameters and their characteristics.
Example:
PreparedStatement pstmt = conn.prepareStatement(
"SELECT * FROM BOOKLIST WHERE ISBN = ?"
);
ParameterMetaData pmd = pstmt.getParameterMetaData();
int colType = pmd.getParameterType(1);See the API specification for more details.
Activity
Totktonada commentedon May 20, 2019
AFAIK, we cannot obtain such metainformation from Tarantool right now and it seems we have no ways to emulate this feature on the driver side. I'll move this to
JDBC + transactionsmilestone and will try to elaborate whether we'll support such kind of metainfo in the future.@nicktorwald Can you please investigate how this usually implemented by other vendors? Whether they allows to obtain parameters metainfo w/o actual operation performing? If no, whether the metainfo is available after an operation?
Totktonada commentedon May 21, 2019
Blocked on tarantool/tarantool#3292
jdbc: support ParameterMetaData class
jdbc: support ParameterMetaData class
jdbc: support ParameterMetaData class