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https://issues.apache.org/jira/browse/DERBY-4031?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Knut Anders Hatlen updated DERBY-4031:
--------------------------------------
Description:
Currently Derby returns null from Statement.getGeneratedKeys() if the
statement is prepared or executed with Statement.NO_GENERATED_KEYS. The javadoc
says:
If this Statement object did not generate any keys, an empty ResultSet object
is returned.
so we should return an empty ResultSet for this case. It is not entirely clear
what the structure of the ResultSet and ResultSetMetaData should be. I tend to
think the following:
getConcurrency() - inherit from the parent statement
getStatement() - null
ResultSetMetaData
getColumnCount - 0
an alternative would be to have the ResultSetMetaData match the signature of
Identity_Val_local() but I think to return 0 columns makes more sense.
was:
Currently Derby returns null from Statement.getGeneratedKeys() if the
statement is prepared or executed with Statement.NO_GENERATED_KEYS. The javadoc
says:
If this Statement object did not generate any keys, an empty ResultSet object
is returned.
so we should return an empty ResultSet for this case. It is not entirely clear
what the structure of the ResultSet and ResultSetMetaData should be. I tend to
think the following:
getConcurrency() - inherit from the parent statement
getStatement() - null
ResultSetMetaData
getColumnCount - 0
an alternative would be to have the ResultSetMetaData match the signature of
Identity_Val_local() but I think to return 0 columns makes more sense.
(Removed lots of trailing blank lines from the description for readability.)
> If NO_GENERATED_KEYS is specified, Statement.getGeneratedKeys should return
> an empty ResultSet, not null
> ---------------------------------------------------------------------------------------------------------
>
> Key: DERBY-4031
> URL: https://issues.apache.org/jira/browse/DERBY-4031
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.3.3.0, 10.4.2.0, 10.5.1.1
> Reporter: Kathey Marsden
>
> Currently Derby returns null from Statement.getGeneratedKeys() if the
> statement is prepared or executed with Statement.NO_GENERATED_KEYS. The
> javadoc says:
> If this Statement object did not generate any keys, an empty ResultSet object
> is returned.
> so we should return an empty ResultSet for this case. It is not entirely
> clear what the structure of the ResultSet and ResultSetMetaData should be. I
> tend to think the following:
> getConcurrency() - inherit from the parent statement
> getStatement() - null
> ResultSetMetaData
> getColumnCount - 0
> an alternative would be to have the ResultSetMetaData match the signature of
> Identity_Val_local() but I think to return 0 columns makes more sense.
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