Gary,
Can you take a look at another one for me. If I execute the folowing code
<xsl:copy-of select="$table" /> , the query() function is called twice. Now
if I add anything to the XPath statement like select="$table/row-set", it
is only called once.
Thanks
John G
Gary L Peskin wrote:
> John --
>
> Here is the diff that will fix your XPath problems:
>
> cvs diff SQLDocument.java (in directory
> C:\Xalan-dev\xml-xalan\java\src\org\apache\xalan\lib\sql\)
> Index: SQLDocument.java
> ===================================================================
> RCS file:
> /home/cvs/xml-xalan/java/src/org/apache/xalan/lib/sql/SQLDocument.java,v
> retrieving revision 1.7
> diff -r1.7 SQLDocument.java
> 806c806
> < if (nodeIdx != DTM.NULL) return m_attribute.elementAt(nodeIdx);
> ---
> > if (nodeIdx != DTM.NULL) return m_attribute.elementAt(nodeIdx) | m_dtmIdent;
> 868c868
> < if (nodeIdx != DTM.NULL) return m_nextsib.elementAt(nodeIdx);
> ---
> > if (nodeIdx != DTM.NULL) return m_nextsib.elementAt(nodeIdx) | m_dtmIdent;
>
> What was happening was that in getFirstAttribute and getNextAttribute
> you were returning the raw node number (ie 0x00000004) instead of the
> full node number which included the DTM id (ie 0x00300004).
>
> You may have this problem in some other methods as well but these were
> the ones I found off the bat and they fixed the original problem. Since
> you're much more familiar with the code, perhaps you could check other
> similar methods and make sure they return the full node number.
>
> Also, I haven't committed anything since I didn't want to step on any of
> your changes. I saw that Joe gave you some suggestions regarding
> tracking down the hanging thread. If you need assistance on that,
> please come back to me and I'll have a look.
>
> Gary
>
> John Gentilin wrote:
> > ...
> > If you have the time to look at this, I am also having another
> > problem that is really hanging me up. If I execute an XPath
> > statement and the select specifies the extent on a tree, it
> > will result in an exception. So if I have the code
> >
> > <xsl:copy-of select="$table/row-set/row/column" />
> >
> > An exception will occur where as if I execute the following.
> >
> > <xsl:copy-of select="$table/row-set/row" />
> > Not only will the exception NOT occur, the data is transferred
> > to the result tree just fine.
> >
> > The same occurs for the following code pair
> > <xsl:copy-of select="$table/row-set/column-header" />
> > and
> > <xsl:copy-of select="$table/row-set" />
> >
> > The only difference I can see is that the XPath statement
> > specifies all the elements in the selected branch.
> >
> > Regards
> > John G
> >
> > Gary L Peskin wrote:
> >
> > > John --
> > >
> > > I can't think of anything in the extension mechanism that would make
> > > this happen. If null is returned from an extension element, nothing
> > > happens. If returned from an extension function, it just turns into an
> > > XNull. If you can't figure it out, please post what I would need to
> > > recreate the situation.
> > >
> > > Thanks,
> > > Gary
> > >
> > > John Gentilin wrote:
> > > >
> > > > If my extension returns null, the transformation seems to
> > > > complete as expected but Process never seems to terminate,
> > > > like some background thread is just keeping the program
> > > > hung up.
> >
> > ------------------------------------------------------------------------
> > <?xml version="1.0"?>
> > <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> > version="1.0"
> > xmlns:sql="org.apache.xalan.lib.sql.XConnection"
> > extension-element-prefixes="sql">
> >
> > <xsl:output method="html" indent="yes"/>
> >
> > <xsl:param name="driver" select="'org.enhydra.instantdb.jdbc.idbDriver'"/>
> > <xsl:param name="datasource" select="'jdbc:idb:./instantdb/sample.prp'"/>
> > <xsl:param name="query" select="'SELECT * FROM import1'"/>
> >
> > <xsl:template match="/">
> > <xsl:variable name="db" select="sql:new($driver, $datasource)"/>
> > <!-- xsl:if test="sql:connect($db, $driver, $datasource)" -->
> > <xsl:text> Connection make OK</xsl:text>
> > <!-- /xsl:if -->
> > <xsl:variable name="table" select='sql:query($db, $query)'/>
> > <!--
> > <xsl:for-each select="$table/row-set/column-header">
> > <xsl:value-of select="@column-label"/></TH>
> > </xsl:for-each>
> > -->
> > <xsl:variable name="table" select='sql:query($db, $query)'/>
> > <xsl:copy-of select="$table/row-set/" />
> > <xsl:value-of select="sql:close($db)"/>
> >
> > </xsl:template>
> >
> > </xsl:stylesheet>
