Product Administration Guide > Configuration Rule Assembly Language >

Rule Examples

This section contains examples of how to use the eConfigurator Rule Assembly Language to create rules. Some of the rules show item names consisting of both the product name and its configuration ID (Cfg ID).

Basic Rules

The following table shows how create basic rules using Rule Assembly Language.

Rule Type                                                
Advanced Rule Language            
A requires B noncumulatively
req(A, B)
A requires B cumulatively
inc(A,B)
A excludes B
excl(A,B)
A provides the amount B to C
inc(*(A,B),C)
A consumes the amount B from C
inc(*(A,-(B)),C)
A's minimum quantity is B, enforced
>=(A,B)
A's maximum quantity is B, enforced
<=(A,B)
A recommends B
rec(req(A,B))

Boolean and Comparison Operators

The following table shows how to create rules using Boolean and comparison operators.

Rule Type                                
Advanced Rule Language        
A AND B =C
==(and(A,B),C)
A OR B = C
==(or(A,B),C)
NOT (A = B)
xor(A,B)
(A < B) requires C
req(<(A,B),C)
(A <= B) requires C
req(<=(A,B),C)
(A = B) requires C
req(==(A,B),C)
(A != B) requires C
req(!=(A,B),C)
(A >=B) requires C
req(>=(A,B),C)
(A >B) requires C
req(>(A,B),C)
(A + B) contributes to C
inc(+(A,B),C)
(A - B) contributes to C
inc(-(A,B),C)
(A * B) contributes to C
inc(*(A,B),C)
(A/B) contributes to C
inc(/(A,B),C)
(A MIN B) contributes to C
inc(min(A,B),C)
(A MAX B) contributes to C
inc(max(A,B),C)

Rule Template Translations

Table 46 shows examples of the rule templates translated into Rule Assembly Language.

Table 46. Rule Template Translations to Rule Assembly Language
Template
RAL Equivalent                                   
Explanation
Constrain
con(>(Item A),1))
Constrain (quantity of
Item A> 1) to be true.
Constrain Conditionally
if(>(Item A), 1), >=
(Item B), 2), excl(Item C, Item D))
When (quantity of
Item A> 1)(quantity of Item B >= 2), otherwise Selection of Item C excludes selection of
Item D.
Constrain Product Quantity
==(Item A, 2)
The quantity of Item A = 2.
Consume
inc(*(Item A), -(1)), Resource B)
Each Item A consumes 1 from Resource B.
Exclude
excl(Item A, Item B)
Selection of Item A excludes selection of Item B.
Exclude List
excl(Item A, Item B, Item C))
Item A excludes (selection of Item B, selection of Item C).
Message
msg(>(Item A, 1))
When (Item A > 1), display this rule's description.
Preference
prefer(Item A, 1)
When possible, constrain Item A is selected to be true with a priority of 1.
Provide
inc(*(Item A), 1),
Resource B)
Each Item A provides 1 to Resource B.
Recommends
chk(req(Item A, Item B), "Item B is recommended")
Selection of Item A recommends selection of at least one Item B by displaying "Item B is recommended".
Requires
req(Item A, Item B)
Item A requires Item B.
Requires (Mutual)
eqv(Item A, Item B)
Item A requires Item B AND Item B requires Item A.
Constrain Attribute Value
==(@.[Class A]
([Item B]).[Day], "Monday")
The attribute Class A
"Item B" Attribute C = Monday.


 Product Administration Guide, Version 7.5 
 Published: 18 April 2003