dbIsImplicit

dbIsImplicit(
d_objectId
) 
=> t / nil

Description

Verifies whether the object represented by the specified database ID is implicit. Supported objects: dbRailDef, dbBackgroundDef and dbCompTypeSetDef.

An implicit object is owned by a rowRegion. Implicit objects cannot be modified directly. However, they can be modified indirectly by changing their corresponding attributes in the rowRegionSpec. Otherwise, the rowRegion can be flattened and the objects owned by the rowRegion are no longer implicit.

Arguments

d_objectId

Database ID of the object to be queried.

Value Returned

t	The object is implicit.
nil	The object is not implict.

Examples

The object backgroundDefId is implicit.

dbIsImplicit(backgroundDefId) 

=> t

Related Topics

Placement Database Access Functions

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