Script expressions can use a variety of scripting languages. Currently supported languages are:
Script Expression Structure
All the script expressions have the same internal structure no matter where and how they are used. The structure is illustrated in the following code snippet.
<expression> <script> <language>http://midpoint.evolveum.com/xml/ns/public/expression/language#Groovy</language> <code> 'Mr. ' + user.getFamilyName(); </code> </script> </expression>
Meaning of individual fields is as follows:
Language URL. Specifies the language in which the expression is written.
Expression code. This is usually a string, but it also may be an XML. Please note that the code is embedded in the XML therefore proper XML escaping is required
The XPath expressions used in midPoint are most frequently using variables. For example, the following XPath expression will evaluate to the content of the
fullName property of a user (using
c as a namespace prefix):
<code> $c:user/c:fullName </code>
<code> user.getFullName(); </code>
See Expression page for more generic information about the use of variables in expressions.
Absolute and Relative Script Expressions
The expressions are designed to be extensible and the expression language is not fixed. New expression languages may come in the future if there is a demand for them.