Re: streaming XSLT creating a header from a first reco

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Subject: Re: streaming XSLT creating a header from a first record
From: "Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 8 May 2018 18:11:02 -0000

On 08.05.2018 18:04, Michael Kay mike@xxxxxxxxxxxx wrote:

I don't think you need two accumulators, you can have a single accumulator that matches every row and only creates the map if the current value is an empty map.

Taking up that idea I tried also to construct a streaming accumulator that stores a (shallow) copy of the first row element and a deep copy of its attributes:

<xsl:accumulator name="first-row-copy" as="element(row)?" initial-value="()" streamable="yes"> <xsl:accumulator-rule match="table/row"> <xsl:choose> <xsl:when test="empty($value)"> <xsl:copy> <xsl:copy-of select="@*"/> </xsl:copy> </xsl:when> <xsl:otherwise> <xsl:sequence select="$value"/> </xsl:otherwise> </xsl:choose> </xsl:accumulator-rule> </xsl:accumulator>

Seems to also work fine. So in that case one doesn't need to switch between XML and maps when processing the stored value but can continue to use the traditional XSLT processing of XML.

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