CodeSnip Old Code (SVN)

Added new GetReferrersTo and GetDependentsOf methods to TDatabase.
Removed IDatabaseEdit's GetReferrers and GetDependents and _IDatabase's GetReferrersTo and GetDependentsOf methods along with their implementations in _TDatabase.
Modified code that used removed _TDatabase methods to use the new TDatabase methods instead.

Renamed IReadOnlySnippet as ISnippet and made required changes to affected code.
Also renamed TDatabase's LookupReadOnlySnippet method and LookupSnippet.

Changed code that accessed _Database.Select to use Database.SelectSnippets instead.
Deleted Select method from IDatabase and _TDatabase.

Changed IQuery's FilterSelection method to take an IDBFilter instance as a parameter instead of a callback function. Changed implementation in TQuery to use the new filter and to use Database.SelectSnippets instead of _Database.Select to perform actual selection.

Moved TDBFilterFn, IDBFilter and TDelegatedDBFilter from CS.Database.Types.pas to DB.UMain.pas and split TDelegatedDBFilter into two classes: the abstract TDBFilter in the interface section with a concrete implementation in TDelegatedDBFilter placed in the implementation section.

Removed unused Clear method from IDatabase and made its implementation in _TDatabase private.

Changed code that accessed _Database.Contains to use Database.SnippetExists instead.
Deleted Contains method from IDatabase and _TDatabase.

Changed code that accessed _Database.GetAllTags to use Database.GetAllTags instead.
Deleted GetAllTags method from IDatabase and _TDatabase.

Changed code that accessed _Database.SelectAll to use Database.GetAllSnippets instead.
Deleted SelectAll method from IDatabase and _TDatabase.

Changed code that accessed _Database.IsEmpty to use Database.IsEmpty instead.
Deleted IsEmpty method from IDatabase and _TDatabase.