url - Universität zu Lübeck

2.4. XUPDATE: XML MODIFICATION LANGUAGE 37
1
2
3 12.99
4
5
Figure 2.17: XUpdate update operation
Copying and moving nodes
XUpdate allows to bind the result of an XPath expression to a variable. In the
following example a name of an item is bound to a variable i and the variable is
inserted at another place. The value of the variable is addressed with $i. This way
one can copy a node in a document.
1
2
3
4
5
7
Figure 2.18: XUpdate operation for copying nodes
It is possible to move a node from one position to another if the node is bound to
a variable and deleted before reinserted. This is shown in the next example.
1
2
3
4
5
6
8
Figure 2.19: XUpdate operation for moving nodes