Mapping Architect for Visio Guide

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Rule Order

You can set the order in which Mapping Architect for Visio evaluates the rules in a rule set. The order of the rules affects the list of ports for which Mapping Architect for Visio creates links. After you create the rules for a rule set, you can change the order in which you want Mapping Architect for Visio to evaluate them.

Mapping Architect for Visio evaluates the rules from top to bottom and creates one link for each port. Two rules can affect the same port. For example, a Named Port rule or a Foreign Key rule at the bottom of the rule set may override a Named Port rule at the top of the rule set.

The following table shows a sample list of starting ports for a link:

Port Name	Port Type	Datatype
ITEM_ID	Primary key	-
ITEM_NAME	-	String
ITEM_DESC	-	String
PRICE	-	Decimal
DISCONTINUED_FLAG	-	Boolean
MANUFACTURER_ID	Foreign key	-
DISTRIBUTOR_ID	Foreign key	-

Based on the example ports in Rule Order, Mapping Architect for Visio creates links for the sample rule sets.

The following table shows how Mapping Architect for Visio evaluates the rules in a rule set.

This rule set...	Creates these links...
All Ports Named:ITEM_DESC (TO) DESCRIPTION Named:PRICE (TO) ITEM_PRICE DataType:decimal	ITEM_ID links to ITEM_ID ITEM_NAME links to ITEM_NAME ITEM_DESC links to DESCRIPTION PRICE links to PRICE DISCONTINUED_FLAG links to DISCONTINUED_FLAG MANUFACTURER_ID links to MANUFACTURER_ID DISTRIBUTOR_ID links to DISTRIBUTOR_ID The Named Port rules for ITEM_DESCRIPTION and PRICE override the All Ports rule. However, the Datatype rule overrides the Named Port rule for PRICE.
Named:ITEM_DESC (TO) DESCRIPTION Named:PRICE (TO) ITEM_PRICE Pattern:[A-Za-z_][A-Za-z_0-9]*_ID$ (TO) NEW_$0 All Ports	ITEM_ID links to ITEM_ID ITEM_NAME links to ITEM_NAME ITEM_DESC links to ITEM_DESC PRICE links to PRICE DISCONTINUED_FLAG links to DISCONTINUED_FLAG MANUFACTURER_ID links to MANUFACTURER_ID DISTRIBUTOR_ID links to DISTRIBUTOR_ID The All Ports rule overrides all previous rules.
Pattern:^ITEM._.$ (TO) $0_IN Primary Key Foreign Key	ITEM_ID links to ITEM_ID ITEM_NAME links to ITEM_NAME_IN ITEM_DESC links to ITEM_DESC_IN MANUFACTURER_ID links to MANUFACTURER_ID DISTRIBUTOR_ID links to DISTRIBUTOR_ID The Primary Key rule overrides the Pattern rule for ITEM_ID.

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Mapping Architect for Visio Guide

Mapping Architect for Visio Guide

Rule Order

Rule Order