there are (number) (type)

This construct tests whether there is a specific number of objects of a given type in the specified collection.

Purpose

You use this construct to determine whether the collection contains exactly the specified number of occurrences of a particular object.

Syntax

there are <number> <type> [in <list>] [where <test>,]

Description

Use the 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 if the number of Gold customers is equal to 8.

if
   there are 8 customers in the customers of bank
      where the category of each customer is Gold
then...