Decision Table

The Decision Table element provides a graphical representation of the 'decision table' expression. When a Decision Table has been dragged onto a rule or an attribute the Create Decision Table wizard is displayed. The user must set the following options:

Number of Rows - this is the number of rows that will be contained in the Decision table, the maximum number of rows is 99;
Result Type - this is the return type of the decision table, the result type must match with the result type of the rule or attribute containing the decision table; and
Rule Class - users can select the current rule class, or change rule classes.

When the user hits the Next button, they can use an existing rule; or choose to create a new rule.

Properties:

The following table lists specific properties items for this element:

Table 1. Decision Table properties items
Name	Description
Class	The name of the rule class that is chosen as a type. This is visible in the Business Tab.
Attribute	The name of the attribute containing the Decision Table. This is visible in the Business Tab
Single Item	Only one item returned from the element. This is visible in the Technical Tab.
Behavior when no items found	Return either one of these results (error, return null) when no items found. This is activated when the 'Single Item' box is checked.
Behavior when multiple items found	Return either one of these results (error, return null, return first, return last) when multiple items found. This is activated when the 'Single Item' box is checked.

Pop-up menu:

The following table lists specific pop-up menu items for this element:

Table 2. Decision Table Pop-up Menus items
Name	Description
Edit Decision Table	Change the Result Type or the associated attribute.
Add new row.	Ad done new row to the decision table.