sdir.h File Reference

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Macros
#define	ScanDirectionIsValid(direction)
#define	ScanDirectionIsBackward(direction)   ((bool) ((direction) == BackwardScanDirection))
#define	ScanDirectionIsNoMovement(direction)   ((bool) ((direction) == NoMovementScanDirection))
#define	ScanDirectionIsForward(direction)   ((bool) ((direction) == ForwardScanDirection))

Typedefs
typedef enum ScanDirection	ScanDirection

Enumerations
enum	ScanDirection { BackwardScanDirection = -1, NoMovementScanDirection = 0, ForwardScanDirection = 1 }

Macro Definition Documentation

ScanDirectionIsBackward

#define ScanDirectionIsBackward

(

direction

)

((bool) ((direction) == BackwardScanDirection))

Definition at line 41 of file sdir.h.

Referenced by _bt_advance_array_keys(), _bt_check_rowcompare(), _bt_checkkeys(), _bt_endpoint(), _bt_first(), _bt_start_array_keys(), _hash_first(), build_index_pathkeys(), ExplainIndexScanDetails(), heapgettup(), heapgettup_pagemode(), IndexNext(), IndexNextWithReorder(), IndexOnlyNext(), and TidNext().

ScanDirectionIsForward

#define ScanDirectionIsForward

(

direction

)

((bool) ((direction) == ForwardScanDirection))

Definition at line 55 of file sdir.h.

Referenced by _bt_check_rowcompare(), _bt_checkkeys(), _bt_endpoint(), _bt_first(), _bt_initialize_more_data(), _bt_next(), _bt_readnextpage(), _bt_readpage(), _bt_steppage(), _hash_load_qualified_items(), _hash_next(), _hash_readpage(), choose_next_subplan_for_leader(), choose_next_subplan_for_worker(), choose_next_subplan_locally(), CteScanNext(), ExecLimit(), ExecMaterial(), ExecSort(), FunctionNext(), heapgettup(), heapgettup_pagemode(), IndexNext(), IndexNextWithReorder(), IndexOnlyNext(), NamedTuplestoreScanNext(), RunFromStore(), ValuesNext(), and WorkTableScanNext().

ScanDirectionIsNoMovement

#define ScanDirectionIsNoMovement

(

direction

)

((bool) ((direction) == NoMovementScanDirection))

Definition at line 48 of file sdir.h.

Referenced by PortalRunSelect(), RunFromStore(), and standard_ExecutorRun().

ScanDirectionIsValid

#define ScanDirectionIsValid

(

direction

)

Value:

((bool) (BackwardScanDirection <= (direction) && \
             (direction) <= ForwardScanDirection))

Definition at line 33 of file sdir.h.

Typedef Documentation

ScanDirection

typedef enum ScanDirection ScanDirection

Enumeration Type Documentation

ScanDirection

enum ScanDirection

Enumerator
BackwardScanDirection
NoMovementScanDirection
ForwardScanDirection

Definition at line 22 of file sdir.h.

{
    BackwardScanDirection = -1,
    NoMovementScanDirection = 0,
    ForwardScanDirection = 1
} ScanDirection;