Describes the input source for an xsl:merge instruction.
Permitted parent elements: xsl:merge
Name of the merge source. Used to distinguish
different merge sources within the
XPath expression returning a set of nodes. Selects the anchor nodes for non-streamed merging.
XPath expression returning a set of
URIs; these are the URIs of documents used for streamed merging; the root nodes
of these documents act as the anchor nodes. In an earlier draft of the XSLT 3.0
specification, this attribute was named
XPath expression; for each anchor node, this selects the descendant nodes that make up the stream of data to be merged.
Streamed merging requires Saxon-EE.
First implemented in Saxon 9.8. Defines the set of accumulators that are applicable to the streamed document.
Specifies whether each input
sequence will first be sorted to ensure that it is in the correct order. The
Determines whether validation is applied to the input read from this merge source. Validation requires Saxon-EE.
If specified, data read from this merge source is validated against the named schema type. Validation requires Saxon-EE.
Available in XSLT 3.0. From Saxon 9.8, available in all editions. Implemented in Saxon-PE and Saxon-EE since Saxon 9.6. Available for all platforms.
Notes on the Saxon implementation
The implementation of streaming uses one thread for each input document. The configuration option to allow multi-threaded execution must not be disabled.
For more information see Streaming with xsl:merge. Streamed merging requires Saxon-EE.
use-accumulators attribute is first implemented in Saxon 9.8.
For details and examples, see xsl:merge