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https://issues.apache.org/jira/browse/DERBY-4959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rick Hillegas updated DERBY-4959:
---------------------------------
Attachment: derby-4959-01-aa-detectNulls.diff
Attaching derby-4959-01-aa-detectNulls.diff. This patch percolates nulls up the
call stack when the server is called to wrap a stream around a LOB. I will run
regression tests.
Touches the following files:
---------
M java/drda/org/apache/derby/impl/drda/EXTDTAInputStream.java
The method which wraps streams around LOB output parameters now detects when
the underlying LOB is null.
---------
M
java/testing/org/apache/derbyTesting/functionTests/tests/jdbc4/CallableStatementTest.java
New test case for this bug.
> NPE in network server trying to return a null LOB as a procedure output arg
> ---------------------------------------------------------------------------
>
> Key: DERBY-4959
> URL: https://issues.apache.org/jira/browse/DERBY-4959
> Project: Derby
> Issue Type: Bug
> Components: JDBC, Network Server, SQL
> Affects Versions: 10.8.0.0
> Reporter: Rick Hillegas
> Assignee: Rick Hillegas
> Attachments: derby-4959-01-aa-detectNulls.diff, zz.java
>
>
> The server stumbles on the following error if you try to return a null LOB as
> a procedure output arg:
> java.lang.NullPointerException
> at
> org.apache.derby.impl.drda.EXTDTAInputStream.length(EXTDTAInputStream.java:280)
> at
> org.apache.derby.impl.drda.EXTDTAInputStream.isEmptyStream(EXTDTAInputStream.java:274)
> at
> org.apache.derby.impl.drda.DRDAConnThread.writeFdocaVal(DRDAConnThread.java:7930)
> at
> org.apache.derby.impl.drda.DRDAConnThread.writeFDODTA(DRDAConnThread.java:7183)
> at
> org.apache.derby.impl.drda.DRDAConnThread.parseEXCSQLSTT(DRDAConnThread.java:4179)
> at
> org.apache.derby.impl.drda.DRDAConnThread.processCommands(DRDAConnThread.java:1021)
> at
> org.apache.derby.impl.drda.DRDAConnThread.run(DRDAConnThread.java:294)
> This kills the connection. I will attach a repro.
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