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Implements the base class for a map for unique IDs to arbitrary data.
Source position: maps.pp line 94
type TBaseMap = class(TPersistent) |
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protected |
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procedure LockMap; |
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Locks the Map when an iterator is added. |
procedure UnLockMap; |
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Unlocks the Map when an iterator is removed. |
procedure InternalAdd(); |
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Adds a map item with the specified ID and Data to the AVL Tree. |
function InternalGetData(); |
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Gets the data stored in the specified map item. |
function InternalGetDataPtr(); |
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Gets a Pointer to the data for the specified map item. |
function InternalGetId(); |
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Get the ID value for the specified map item. |
function InternalSetData(); |
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Stores the data for the specified map item. |
procedure ReleaseData(); virtual; |
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Frees resources allocated for the data in the map item. |
public |
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constructor Create(); |
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Constructor for the class instance. |
procedure Clear; |
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Clears all map items in the AVL Tree. |
function Count; |
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Gets the number of map items in the AVL Tree. |
function Delete(); |
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Deletes the specified map item from the AVL Tree. |
destructor Destroy; override; |
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Destructor for the class instance. |
end; |
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Implements the base class for a map for unique IDs to arbitrary data. |
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Implements the base class that is a map for unique IDs to arbitrary data. The ID-to-Data mapping is stored in an Average Level Binary Tree for fast indexing. The map also maintains a linked list between the ordered items for fast iteration through its elements. The ID can be signed or unsigned, with a size of 1, 2, 4, 8, 16 or 32 bytes. The data can be of any (constant) size.
Use a descendant class, such as TMap, which includes methods to Add items and to read or write their arbitrary data values.
Author: Marc Weustink
| Version 4.0 | Generated 2025-05-03 | Home |