Templates

Extensibility is among the major OpenRules capabilities that make the product highly customizable allowing users to create domain-specific decision tables. As an example, let’s add a new column type “SumOfArray” which is supposed to summarize all elements of an array and assign the result to another variable.  Here is the proper template and a decision table that was created based on it:

This template defines a new action type called “SumOfArray” in the first row. The second row can contain any Java snippet including any standard and 3^rd party Java methods. The third row defines the type and name of the array. And the 4^th row should contain the name of the variable in which this action is supposed to put a sum of the array. A decision table on the right uses the action of the type “SumOfArray”. If “My Array” is defined as {1,2,3,4,5} then the variable “Sum” will become 15. This action column now can be mixed with regular Condition and Conclusion columns in any decision table.

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