there is no <object>

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there is no <object>

Summary

Tests to see if there are no objects of the given type in the current data set or the specified collection.

Syntax

there is no <object> [in <list>] [where <tests>,*]

Description

Use this construct to determine if the current data set contains no occurrences of a particular object.

Use the optional in clause to apply the test to a specific collection of objects. Use one or more optional where clauses to filter the objects to be counted with one or more conditions.

This construct can only be used in the if part of a rule.

Example

The following condition tests that there is no object of type Customer in the object set provided to the rule engine for execution.

if
   there is no customer where...
then...