Minimum or Maximum Rule Type

Minimum or Maximum Rule Type
The minimum (min)/maximum (max) rule declares a parent attribute to be maintained as the min/max of a designated child role's maxed attribute, with an optional qualification to filter child objects.
The value of the attribute is updated to reflect the min/max of the specified attribute in the child objects whenever necessary. This includes child objects being added to and removed from the parent object, as well as modifications to the children objects that change their qualification in the min or the min value. Observe that min/max processing is triggered by changes to the child, as visible in the log.
For more information about the log, see Debug.
Create a Minimum or Maximum Rule
  1. In API Creator, under the Manage menu, click
    , and then click 
    Create New Rule
  2. Select the
    rule type, the entity to which it applies, and click
    Create Rule
  3. Define the parameters of the rule:
    Minimum/Maximum name
    The name of the min/max rule. 
    Leave this field blank for the system default. 
    The name of the parent entity and column representing the min/max result. 
    The topic associated with this rule.
    Defines the child role (first combo box) and attribute (second combo box) being minimized/maximized.
    For more information about roles and foreign key-based relationships, see Data Sources.
    Boolean JavaScript expression designating the child rows checked for the min/max.
    Select to activate the rule (the definition must be complete).
    Indicates whether you can optimize the rule by executing it in SQL instead of in JavaScript.
    Just In Time
    Specifies that 
    CA Live API Creator
     recompute the data values.
    If the value in the database is null, 
    CA Live API Creator
     executes the rule on the first read, stores the value for that column in the database, and returns the value. To prevent 
    CA Live API Creator
     from executing rules with null return values on every read, the rule should never return a null value.
    Specifying min/max rules as Just in Time (JIT) can affect performance whenever new values are computed on the fly.
    For more information about JIT, including how to specify to have 
    CA Live API Creator
     recompute your rules when/as it detects null vales, see Synchronize Data with Logic.
  4. Click
    Activate and Close
    to return to the list of rules.
The min/max rule is created.