You can control whether pattern parameters can be edited by pattern users based on the values of other pattern parameters.
By using XPath expressions you can control whether pattern users can edit pattern parameters in the Pattern Instance editor . If an expression evaluates to Boolean true, the pattern user can configure the parameter in the Configure Pattern Parameters page; if an expression evaluates to Boolean false, the parameter is read-only, and the pattern user cannot configure it. When the pattern user configures pattern parameters, expressions are evaluated whenever any of the pattern parameters used in an expression change.
IBM® Integration Bus supports
XPath 1.0. For XPath reference information, including information
about XPath functions, see W3C XPath 1.0 Specification.
To define an XPath expression to control whether a pattern parameter can be edited: