[jira] Commented: (DERBY-1599) Clob.getSubString() throws NullPointerException when created by updatable result set

["Knut Anders Hatlen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DERBY-1599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12539340 ] 

Knut Anders Hatlen commented on DERBY-1599:
-------------------------------------------

I'm fine with that restriction as long as we get an SQLException with a clear message instead of NullPointerException/EOFException/AssertFailure.

> Clob.getSubString() throws NullPointerException when created by updatable result set
> ------------------------------------------------------------------------------------
>
>                 Key: DERBY-1599
>                 URL: https://issues.apache.org/jira/browse/DERBY-1599
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC, Network Client
>    Affects Versions: 10.1.3.1, 10.2.1.6
>            Reporter: Knut Anders Hatlen
>            Priority: Minor
>         Attachments: Repro.java
>
>
> If you create a clob value with one of the ResultSet.updateXXX methods that take a stream or a reader, and retrieve that value with ResultSet.getClob(), a NullPointerException will be thrown when getSubString() is called on the returned Clob object. This happens with the network client driver, and it has been observed on Derby 10.1.3.1 and trunk.
> Exception in thread "main" java.lang.NullPointerException
>         at org.apache.derby.client.am.Clob.getSubStringX(Clob.java:229)
>         at org.apache.derby.client.am.Clob.getSubString(Clob.java:210)
>         at Repro.main(Repro.java:24)

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