XSLT 2.0 and XPath 2.0 Programmer's Reference, 4th Edition (149 page)

See Also

immediately following.

xsl:copy-of

The main purpose of the

instruction is to copy a sequence of nodes to the result sequence. This is a deep copy—when a node is copied, its descendants are also copied.

Changes in 2.0

A new
copy-namespaces
attribute is introduced: This gives you control over whether or not the unused namespaces of an element should be copied.

Two new attributes
validation
and
type
are available to control whether and how the copied nodes are validated against a schema.

Format

Position

is an instruction. It is always used within a sequence constructor.

Attributes

Name	Value	Meaning
select mandatory	XPath Expression	The sequence of nodes or atomic values to be copied to the output destination
copy-namespaces optional	yes or no . Default is yes	Indicates whether the namespace nodes of an element should be copied
validation optional	strict , lax , preserve , or skip	Indicates whether and how the copied nodes should be subjected to schema validation, or whether existing type annotations should be retained or removed