string - Schematron: Element within mixed-type element only with other content -

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my xml data should this:

<mixed_type_parent>  ...text...    <other_element1/>   <other_element2/>    <element_in_question>...some content...</element_in_question>    <other_element2>...text...</other_element2>   <other_element1>...text...</other_element1>  ...text... </mixed_type_parent>

what want make sure using schematron "element_in_question" may appear within "mixed_type_parent" if there text outside of "element_in_question". means

<mixed_type_parent>   <element_in_question>...some content...</element_in_question> </mixed_type_parent>

is not allowed , should cause error.

i tried string-length of text within "mixed_type_parent"

string-length(replace(ancestor::mixed_type_parent[1]/text(),' ', ''))

but, again, there 1 of annoying errors in xpath: "a sequence of more 1 item not allowed first argument of replace()"

in xslt have solved problem simplest function can think about:

<xsl:function name="locfun:make_string">  <xsl:param name="input_sequence"/>  <xsl:value-of select="$input_sequence"/> </xsl:function>

(it shame there seams no such built-in function in xpath.)

but how can use function in schematron? didn't find solution this.

and other that: how text form other childs of "mixed_type_parent" except "mixed_type_parent"?

try this:

string-join(ancestor::mixed_type_parent[1]/text(),'')=''

for second question: how text form other childs of "mixed_type_parent" except "mixed_type_parent"?

/mixed_type_parent/*[not(self::element_in_question)]/text()

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