Are there limitations to running queries inside of transactions?

Question

I'm seeing altered or no results when running under a transaction:
context = getXmlManager().createQueryContext();
XmlQueryExpression.execute(XmlTransaction, XmlQueryContext, XmlDocumentConfig)where:
            TransactionConfig txnConfig = new TransactionConfig();
            txnConfig.setNoWait(false);
            txnConfig.setSync(true);
            transaction = getXmlManager().createTransaction(null, txnConfig);and         XmlDocumentConfig docConfig = new XmlDocumentConfig();
        docConfig.setLockMode(LockMode.RMW);
        docConfig.setLazyDocs(false);The XmlContainer and Environment are transactional. There are node indexes on these containers.
If I use: XmlQueryExpression.execute(XmlQueryContext, XmlDocumentConfig) all is fine.
My test conditions are single threaded dbxml 2.2.13 on Windows 2003 Server. Later I'll need to run multi-threaded.
Any thoughts (aside from upgrade)?
Known, confirmed problem?
Are there any limitations to what can be inside of a query that is run inside a transaction?
Can the query span containers?
Any impact from setDefaultContainer?
Does document{ } work any differently?
Do FLWR queries behave differently?
Thanks in advance,
Douglas Moore

Answer 1

John,
I'm actually pointing out a functional difference while running with a single threaded non-stressful unit test.
The inner <report> elements do not show up when transactional api is used.
Inlining the FLWOR expression does not change the situation.
I now have the 6 patches applied to dbxml 2.2.13 and see the same results as an unpatched dbxml library.
My query looks like:
declare function local:get_ordered($max_reports as xs:decimal)
        for $reports in collection("per-system.dbxml")/reports-catalog/report
                        where $reports/@type = "ABC"
        return $reports
document{
<reports-catalog xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.persistable.org/reports-catalog.xsd"
        mime-type="application/pdf" sequence="65241390550" id="ABC">
                local:get_ordered(1)
</reports-catalog>
} Thanks,
Douglas Moore