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https://issues.apache.org/jira/browse/DERBY-3870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13036223#comment-13036223
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Bryan Pendleton commented on DERBY-3870:
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Your approach seems fine to me. When I was working on the XPLAIN tables I
remember thinking
it would be nice if the operator nodes had a closer base class than ValueNode,
so that seems
like a good idea to me. Isn't it true that the compile classes and the
execution classes have a
common class hierarchy? Is there a parallel re-factoring of a common base class
to be done in
the other tree? I think that if we move the SqlXmlExecutor from the execute
package to the
types package, it might be nice to change its name (to remove "Executor").
Thanks for cleaning
up this code, it will be nice to have this feature be more reliable.
> Concurrent Inserts of rows with XML data results in an exception
> ----------------------------------------------------------------
>
> Key: DERBY-3870
> URL: https://issues.apache.org/jira/browse/DERBY-3870
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.4.1.3, 10.4.2.1, 10.5.2.0, 10.6.1.0
> Environment: System: MS windows server 2003 standard edition service
> pack 2. Derby is run as a server on port 1527.
> Reporter: Royi Ronen
> Assignee: Knut Anders Hatlen
> Labels: derby_triage10_5_2
> Attachments: Copy of derby.log, DerbyMultiInsertXmlException.zip,
> d3870-1a.diff, d3870-1a.stat, d3870-junit.diff
>
>
> We insert rows into a table using the following prepared statement (through
> JDBC):
> INSERT INTO USER1.PSTORE values(?,?, XMLPARSE(document CAST (? AS CLOB)
> preserve whitespace))
> where each of the ?'s are replaced with a string.
> One thread runs fine. Two or more result in the following exception:
> org.apache.derby.client.am.SqlException: Java exception: 'FWK005 parse may
> not be called while parsing.: org.xml.sax.SAXException'.
> at org.apache.derby.client.am.SqlException.<init>(Unknown Source)
> at org.apache.derby.client.am.SqlException.<init>(Unknown Source)
> We believe that this comes from the dBuilder.parse(InputSource) method.
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