DBExtend :: GetBaseExtent - Get superset definition
The function provides the property definition for a superset (base extent).
The function works for property definitions referring to extents. When calling the function for structure properties or key components, no property definition is returned.
In order to provide the superset for a local property (relationship) the Property function baseCollection () can be called.
When the function is called with an invalid property definition it, throws an exception.
Implementation overview
- Get base extent by position
DBExtend :: GetBaseExtent ( extent_pos ) - Get base extent by name
DBExtend :: GetBaseExtent ( cnstring )
Implementation details
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Get base extent by position
DBExtend * DBExtend :: GetBaseExtent ( int16 extent_pos )
This implementation searches for the extent in the extent list at the position in the list. This function can be used to list all base extents for an extent. The function returns NULL, when no (more) extents could be found at the given position.
- extent_pos
- Extent position in the list
This is the relative position of an extent in a list. The first extent in the list has position 0.
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- extent_pos
- Extent position in the list
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Get base extent by name
DBExtend * DBExtend :: GetBaseExtent ( NString &cnstring )
This implementation searches for the extent in the extent list with the name passed to the function. The function returns NULL, when no extent with the given name has been found in the list of base extents.
- cnstring - String containing the text
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