Data Object subtypes

[openlowcode]

In current system, Data Objects all have the same fields and properties. For example, a data object 'animal' would always have the same fields and properties.

The sub-type module will provide the following:

• Data object will get a type (e.g. 'hyena', 'lion', 'spider' )
• For each type, potentially, a sub data object (a list of fields and properties) will be attached. For examples, all mammals ( here 'hyena' and 'lion' ) may get the sub data object 'mammal', with information like length of gestation...
• The sub-type and families are search criteria

For any screen when there is a single data object, or all data objects are of the same family, all fields are shown, including the fields of the sub-object.

For any screen where there can be data objects of different families, only the common fields and property display elements are shown.

When creating a new object, the type is chosen first, then the screen shows both the fields of the object and sub object.

It is possible to specify different business rules even for properties on the main data object. Typically, auto-numbering and auto-naming business rules can be specific per sub-object / family.

Non objectives:

• Change of object type outside of a family.
• Generally, other objects will link to the data object type (e.g. animal), not the subtype ( 'hyena' ) pr the family ( 'mammal' ). Restricting links to subtypes or families may be implemented in a further ticket.