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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4869) Implement JDBC 4.1, the api increment introduced by Java 7
Date Fri, 11 Feb 2011 10:48:57 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4869?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12993439#comment-12993439
] 

Knut Anders Hatlen commented on DERBY-4869:
-------------------------------------------

Hi Rick,

On a machine that has shown this failure in the nightly tests (the SUSE box), I ran the test
100 times successfully without your fix, so I'm not sure how to reproduce it easily.

I'm not sure, though, if the essence of the comment is that the query should return more than
one row. My understanding is that the MOD function is used to force one next() call to consider
multiple rows before it returns. The MOD function in that query makes next() have to consider
three rows because only every third row qualifies.

It may also be significant that the second argument to the delay function is a reference to
a column, so that the function has to be invoked for every row.

> Implement JDBC 4.1, the api increment introduced by Java 7
> ----------------------------------------------------------
>
>                 Key: DERBY-4869
>                 URL: https://issues.apache.org/jira/browse/DERBY-4869
>             Project: Derby
>          Issue Type: Improvement
>          Components: JDBC
>            Reporter: Rick Hillegas
>            Assignee: Rick Hillegas
>         Attachments: Drv41.java, JDBC_4.1_Changes.html, derby-4869-01-ac-rs-getObject.diff,
derby-4869-01-ad-rs-getObject.diff, derby-4869-02-aa-cs-ps-addBatch.diff, derby-4869-02-ab-cs-ps-addBatch.diff,
derby-4869-03-aa-rs-getObject-errorCleanup.diff, derby-4869-04-aa-rs-getObject-simplification.diff,
derby-4869-05-aa-rs-getObject-exception.diff, derby-4869-06-aa-cs-getObject.diff, derby-4869-06-ab-cs-getObject.diff,
derby-4869-07-aa-timedisplacement.diff, derby-4869-08-ac-nullHandling.diff, derby-4869-09-ac-abort.diff,
derby-4869-10-aa-abortSecurityTest.diff, derby-4869-11-aa-abortHidePrivates.diff, derby-4869-12-aa-xaAndPooledAborts.diff,
derby-4869-13-aa-xaAndPooledAbortsSecurityManager.diff, derby-4869-14-ac-closeOnCompletion.diff,
derby-4869-15-aa-autoGenKeys.diff, derby-4869-16-aa-clarifyStatementSpec.diff, derby-4869-17-aa-statementTimeoutException.diff,
derby-4869-18-aa-getSetSchema.diff, derby-4869-19-aa-getSetNetworkTimeout.diff, derby-4869-20-aa-setSchemaFastPath.diff,
derby-4869-21-aa-implicitlyClosedResultSets.diff, derby-4869-21-ab-implicitlyClosedResultSets.diff,
derby-4869-22-aa-unstableStatementTest.diff, derby-4869-23-aa-dbmd.diff, derby-4869-24-ab-getParentLogger.diff,
derby-4869-25-aa-removeClosureCheck.diff, derby-4869-26-aa-signatureTests.diff, derby-4869-27-aa-driver40.diff,
derby-4869-28-ab-autoloadExceptionFactory.diff, derby-4869-29-aa-fixAutoloadTest.diff, derby-4869-30-aa-unstableStatementTest.diff,
derby-4869-31-aa-unstableStatementTest.diff, derby-4869-exp-01-aa-noTryCatch.diff, disable-tests.diff,
timezone.diff
>
>
> This is a master issue logged to track our work implementing JDBC 4.1, the changes to
the java.sql and javax.sql packages introduced by Java 7.

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