Unit 'DB'	Package
[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index]	[#fcl]

TDefCollection

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

Definition collection.

Declaration

Source position: db.pas line 157

`type TDefCollection = class(TOwnedCollection)`
`public`
`constructor create();`		Instantiate a new `TDefCollection` instance.
`function Find();`		Find an item by name.
`procedure GetItemNames();`		Return a list of all names in the collection.
`function IndexOf();`		Find location of item by name.
`property Dataset: TDataSet; [r]`		Dataset this collection manages definitions for.
`property Updated: Boolean; [rw]`		Has one of the items been changed.
`end;`

Inheritance

`TDefCollection`		Definition collection.
\|
`TOwnedCollection`
\|
`TCollection`
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`TPersistent`
\|
`TObject,IFPObserved`

Description

TDefCollection is a parent class for the TFieldDefs and TIndexDefs collections: It holds a set of named definitions on behalf of a TDataset component. To this end, it introduces a dataset property, and a mechanism to notify the dataset of any updates in the collection. It is supposed to hold items of class TNamedItem, so the TDefCollection.Find method can find items by named.