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https://issues.apache.org/jira/browse/DERBY-1599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12539403
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Daniel John Debrunner commented on DERBY-1599:
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What exactly would this restriction be? Can I call getCharacterStream() to view
the contents and then updateCharacterStream() to update them (based upon what I
read)?
> 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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