About Mapping Condition XQuery Expressions

This topic describes how to use the Mapping Rule editor, Mapping tab, Condition subtab, Expressions area, XQuery subtab to write an expression that defines a condition that must be satisfied to apply this mapping.

Context: The input document is a target order item.
Prolog: You can declare the order item namespace in the XQuery prolog. For example:
```
  declare namespace prop='http://oracle.communications.broadband';
```
Body: The XQuery body returns a Boolean, with true meaning that the mapping rule should be run and false meaning that the mapping rule should not be run.

The following example shows an XQuery expression that will execute the rule only if the target action is None.

declare namespace prop='http://oracle.communications.cso';
osm:properties/prop:Action/text() = 'None'