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https://issues.apache.org/jira/browse/CALCITE-705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14572665#comment-14572665
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YeongWei commented on CALCITE-705:
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Hi [~julianhyde],
I have made the changes as per your guidance, the Work-In-Progress can be found
at the following link,
https://github.com/yeongwei/incubator-calcite/commit/1b654b5b58bdea680bce35011638d05b55563f79?diff=split
Highlights,
1. JdbcMeta#prepare needs to handle connection from both underlying data
sources (HSQLDB, MYSQL, etc) and also CalciteConnections. To facilitata
StatementType information at this level, I have create the
AvaticaStatement#getStatementType. Therefore, if the PreparedStatement is a
wrapped of AvaticaPreparedStatement then proceed to unwrap then get the
StatementType else will treat as null.
2. DDL scenarios will have the AvaticaStatement#signature as null, therefore
additional check added in AvaticaConnection#isUpdateCapable
3. At various point where the routine needs to construct the Signature Objects.
If there is existing signature then attempt to reuse the statementType else
assumes SELECT.
Let me know what do you think.
Thanks!
> AvaticaStatement execute method to support DML
> ----------------------------------------------
>
> Key: CALCITE-705
> URL: https://issues.apache.org/jira/browse/CALCITE-705
> Project: Calcite
> Issue Type: New Feature
> Reporter: YeongWei
> Assignee: Julian Hyde
>
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