Name
xml_tree_doc_media_type
Synopsis
varchar xml_tree_doc_media_type ( |
in xml_entity any
); |
Description
This function returns the media type in effect for the result of the xslt() (XSL-T) transformation , based on xsl:output "media-type" and "method" attributes of the XSL-T style-sheet applied. It accepts an entity (potentially resulting from using xslt()) as a argument and will return a string containing the media-type.
Parameters
xml_entity
An XML entity such as that returned by the xslt() function.
Return Types
If xsl:output "media-type" specified in XSL-T sheet it's value will be returned. If no "media-type" is specified, the valid results dependent on the <xsl:output "method" attribute are:
| if unknown : non-string value |
| if 'html' : 'text/html' |
| if 'xhtml' : 'text/html' |
| if 'xml' : 'text/xml' |
| if 'text' : 'text/plain'. |
Errors
This function can generate the following errors:
22023 SR003 Function xml_tree_doc_media_type needs an XML entity as argument 1, not an arg of type <type_name> (<type>)
Examples
Example24.519.Assessing the media type
-- x.xsl --
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="text" />
....
</xsl:stylesheet>
-- execute a simple transformation via ISQL tool
SQL> select xml_tree_doc_media_type (xslt ('file:/x.xsl',xml_tree_doc ('<A />')));
Connected to OpenLink Virtuoso
Driver: 03.00.2310 OpenLink Virtuoso ODBC Driver
callret
VARCHAR
_______________________________________________________________________________
text/plain
1 Rows. -- 95 msec.