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https://issues.apache.org/jira/browse/DERBY-5488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13154172#comment-13154172
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Rick Hillegas commented on DERBY-5488:
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Thanks for reviewing the issues raised by derby-5488-10-aa-metadataTypo.diff,
Knut. In private email, JDBC spec lead Lance Andersen also raised the
possibility of letting the DatabaseMetaData.getColumns() ResultSet recognize
SCOPE_CATLOG as a column name as well as SCOPE_CATALOG. As you note, vendors
are allowed to add extra columns to these ResultSets.
I agree that the extra SCOPE_CATLOG column would be a useful piece of defensive
logic. I will add it in a revised version of this patch. Note that the position
of the extra SCOPE_CATLOG column will change if a future rev of the JDBC spec
adds more columns to the end of this ResultSet. That will affect users who do
not pay attention to the warning that vendor-specific columns should only be
referenced by name, not by position. If needed, we can address that issue in a
future release note accompanying our implementation of those spec changes.
Thanks,
-Rick
> Add remaining JDBC 4.1 bits which did not appear in the Java 7 javadoc.
> -----------------------------------------------------------------------
>
> Key: DERBY-5488
> URL: https://issues.apache.org/jira/browse/DERBY-5488
> Project: Derby
> Issue Type: Improvement
> Components: JDBC, SQL
> Affects Versions: 10.9.0.0
> Reporter: Rick Hillegas
> Assignee: Rick Hillegas
> Attachments: JDBC_4.1_Supplement.html,
> derby-5488-01-aa-objectMappingAndConversion.diff,
> derby-5488-02-aa-fixBigInteger.diff,
> derby-5488-03-ac-moveDecimalSetterGetterAndTest.diff,
> derby-5488-04-aa-fixBigIntegerDecimal.diff,
> derby-5488-05-ad-limitOffset.diff, derby-5488-06-aa-limitOffsetTests.diff,
> derby-5488-07-aa-booleanObjects.diff,
> derby-5488-08-aa-extraLimitOffsetTest.diff,
> derby-5488-09-aa-jdbcMinorVersion.diff, derby-5488-10-aa-metadataTypo.diff,
> fix-jdbc30-test.diff, z.java
>
>
> In addition to the JDBC 4.1 bits which were visible in the Java 7 javadoc, a
> couple other items appear in the JDBC 4.1 Maintenance Review spec. This spec
> has been published on the JCP website at
> http://download.oracle.com/otndocs/jcp/jdbc-4_1-mrel-eval-spec/index.html. I
> will attach a functional spec for the remaining bits.
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