Data.DB.TFieldDefList
Delphi
TFieldDefList = class(TFlatList)
C++
class PASCALIMPLEMENTATION TFieldDefList : public TFlatList
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| class | public | Data.DB.pas Data.DB.hpp |
Data.DB | Data.DB |
Description
TFieldDefList lists the field definition (TFieldDef) objects of a dataset in a flattened form.
TFieldDefList is used by a dataset to implement its FieldDefList property. This object lists field definitions in a flattened format.
With object field types, such as TADTField and TArrayField, there are two ways to represent the field definitions: hierarchically or flattened. When represented hierarchically, object field definitions contain a set of child definitions for the constituent subfields. When represented as a flattened set, child field definitions appear as siblings sequentially after the parent field definition.
TFieldDefList stores the flattened field definitions of a dataset. This is a linear representation of the data, and is in contrast to TFieldDefs which has a hierarchical representation of the data.
TFieldDefList is a descendant of TStringList. The strings in this string list are the names of fields. The objects that correspond to those strings are the TFieldDef objects.