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Posted to dev@xalan.apache.org by bu...@apache.org on 2002/09/05 18:21:07 UTC

DO NOT REPLY [Bug 12337] New: - SQL Extension broken for streaming mode

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=12337

SQL Extension broken for streaming mode

           Summary: SQL Extension broken for streaming mode
           Product: XalanJ2
           Version: 2.4Dx
          Platform: All
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: org.apache.xalan.lib.sql
        AssignedTo: xalan-dev@xml.apache.org
        ReportedBy: johnglinux@eyecatching.com


The iterator used when traversing the result set from the SQL Extension
unnecessarily sorts the data. In streaming mode, this causes loss of data
which results in only the last row of data being returned. 

To workaround this problem only apply-templates to the row-set element and
provide another level of templates i.e.
<xsl:apply-templates select="$table/sql/row-set"/>
instead of
<xsl:apply-templates select="$table/sql/row-set/row"/>

Then provide a dummy template

<xsl:template match="row-set">
<xsl:apply-templates select="row"/>
</xsl:template>

I am also assuming that this will provide a performance enhancement since
the first select statement only selects one row, then only one row will
be sorted (in non streaming mode).