Description
The functx:sequence-type function checks the types and/or node kinds of one or more items ($items) and returns a sequence type that matches $items. This is useful for debugging and testing the composition of a sequence.
Arguments and Return Type| Name | Type | Description |
|---|
$items |
item()* |
the items whose sequence type you want to determine |
| return value |
xs:string |
XSLT Function Declaration| See XQuery definition. | | XSLT 2.0 Syntax: |
|---|
<xsl:function name="functx:sequence-type" as="xs:string"
xmlns:functx="http://www.functx.com" >
<xsl:param name="items" as="item()*"/>
<xsl:sequence select="
concat(
if (empty($items))
then 'empty-sequence()'
else if (every $val in $items
satisfies $val instance of xs:anyAtomicType)
then if (count(distinct-values(functx:atomic-type($items)))
> 1)
then 'xs:anyAtomicType'
else functx:atomic-type($items[1])
else if (some $val in $items
satisfies $val instance of xs:anyAtomicType)
then 'item()'
else if (count(distinct-values(functx:node-kind($items))) > 1)
then 'node()'
else concat(functx:node-kind($items[1]),'()')
,
if (count($items) > 1)
then '+' else '')
"/>
</xsl:function>
|
Examples<xsl:variable name="in-xml" as="item()*"> | | <in-xml>
<a att1="y">x</a>
<b att1="x">x</b>
<!-- comment -->
</in-xml> |
| </xsl:variable> |
| XSLT Example | Results | Explanation |
|---|
functx:sequence-type(2)
|
xs:integer
|
functx:sequence-type(('abc','def'))
|
xs:string+
|
functx:sequence-type(('abc',2))
|
xs:anyAtomicType+
|
functx:sequence-type( () )
|
empty-sequence()
|
functx:sequence-type($in-xml/*[1])
|
element()
|
functx:sequence-type($in-xml/*)
|
element()+
|
functx:sequence-type($in-xml/*/@*)
|
attribute()+
|
functx:sequence-type($in-xml/*/text())
|
text()+
|
functx:sequence-type($in-xml/comment())
|
comment()
|
functx:sequence-type($in-xml/node())
|
node()+
|
generic because there is a combination of node kinds (element and comment) |
functx:sequence-type(($in-xml/*,'2'))
|
item()+
|
even more generic because there is a combination of nodes and an atomic value |
Depends OnHistory |
|
