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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-5765) Embedded doesn't clear warnings on ResultSet when moving to next row
Date Wed, 16 May 2012 12:47:03 GMT

     [ https://issues.apache.org/jira/browse/DERBY-5765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Knut Anders Hatlen updated DERBY-5765:
--------------------------------------

    Attachment: ClearWarnings.java

The attached program reproduces the bug by executing a statement that returns two rows, with
a warning on the first row.

With the client driver it (correctly) prints:

Warnings on row 1: java.sql.SQLWarning: Null values were eliminated from the argument of a
column function.
Warnings on row 2: null

With the embedded driver the warning chain isn't cleared before row 2 is read, and it prints:

Warnings on row 1: java.sql.SQLWarning: Null values were eliminated from the argument of a
column function.
Warnings on row 2: java.sql.SQLWarning: Null values were eliminated from the argument of a
column function.
                
> Embedded doesn't clear warnings on ResultSet when moving to next row
> --------------------------------------------------------------------
>
>                 Key: DERBY-5765
>                 URL: https://issues.apache.org/jira/browse/DERBY-5765
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.8.2.2
>            Reporter: Knut Anders Hatlen
>         Attachments: ClearWarnings.java
>
>
> The javadoc for java.sql.ResultSet.getWarnings() says that the warning chain should be
cleared automatically when a new row is read. The client driver does that, but the embedded
driver does not.

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