Advanced usage - extending rules with in-line Groovy

The built-in expressions that can be used in conditions and actions, and the built-in actions provide most of the commonly used capabilities. When you have conditions and actions that are not supported by these built-in capabilities, you can use in-line Groovy.

This section is not intended to be a detailed description or tutorial on Groovy. See http://groovy.codehaus.org for such details.


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