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From "Knut Anders Hatlen (JIRA)" <derby-...@db.apache.org>
Subject [jira] Updated: (DERBY-970) Add new metadata methods to network client driver
Date Thu, 23 Mar 2006 10:15:16 GMT
     [ http://issues.apache.org/jira/browse/DERBY-970?page=all ]

Knut Anders Hatlen updated DERBY-970:

    Attachment: derby-970-part3-v1.diff

Attaching patch derby-970-part3-v1.diff which implements the new JDBC
4 methods getSchemas(String, String) and getClientInfoProperties() on
the client driver.

Description of changes on the embedded side:

  1) Moved getSchemas(String, String) from EmbedDatabaseMetaData40 to
     EmbedDatabaseMetaData so that a server running JVM < 1.6 does not

  2) Extended SystemProcedures.SQLTABLES() (aka SYSIMB.SQLTABLES) to
     support getSchemas(String, String). It already has support for
     the zero-parameter getSchemas() by passing an option string
     "GETSCHEMAS=1". The new getSchemas() is invoked by passing

Description of changes on the client side:

  3) New SQLSTATE and error message for the case when a JDBC method is
     not supported by the server (i.e., when running a new client
     against an old server). Message text: "JDBC method {0} is not
     supported by the server. Please upgrade the server."

  4) DatabaseMetaData.getClientInfoProperties() returns an empty
     result set with the correct column names. The query is hard-coded
     so that an empty result set is returned regardless of server
     version. (Same pattern is used as in the existing methods
     getSuperTypes(), getSuperTables() and getAttributes().)

  5) DatabaseMetaData.getSchemas(String, String) is implemented as a
     call to SYSIBM.SQLTABLES with the GETSCHEMAS=2 option. Since
     GETSCHEMAS=2 is not supported by older servers, the JDBC version
     of the server is checked. If the server does not support JDBC 4,
     an exception is thrown (without this check, the result of a call
     to getTables() would have been returned).

Description of test changes:

  6) In TestDbMetaData, removed try/catch blocks which were added to
     make the test continue to run when the methods were not
     implemented. (The test is still not enabled in DerbyNetClient
     because getFunctions() and getFunctionParameters() are not
     implemented yet.)

> Add new metadata methods to network client driver
> -------------------------------------------------
>          Key: DERBY-970
>          URL: http://issues.apache.org/jira/browse/DERBY-970
>      Project: Derby
>         Type: Sub-task
>     Reporter: David Van Couvering
>     Assignee: Knut Anders Hatlen
>  Attachments: derby-970-part1-v1.diff, derby-970-part1-v1.stat, derby-970-part2-v1.diff,
derby-970-part2-v1.stat, derby-970-part3-v1.diff, derby-970-part3-v1.stat
> Implement new JDBC 4.0 DatabaseMetaData methods in the client driver:
>   - supportsStoredFunctionsUsingCallSyntax()
>   - autoCommitFailureClosesAllResultSets()
>   - getClientInfoProperties()
>   - providesQueryObjectGenerator()
>   - getSchemas()
>   - getRowIdLifetime()

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