Scan

source: bluebase/rm/scan.py

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dataclassclass RmPredicate(name: str, comp: Comp, value: bool | int | float | str, domain: Domain, offset: int)

Bases: Predicate

file scan을 위한 predicate를 나타내는 dataclass 클래스입니다.

Variables:

• domain (Domain)

• offset (int)

slice() → slice

validate_offset(record_size: int) → None

Raises:

RmRecordOutOfRangeError –

evaluate_record(record: RmRecord) → bool

Raises:

RmRecordOutOfRangeError –

dataclassclass RmScanCursor(pid: RmPageId, sid: RmSlotId)

Bases: object

Variables:

• pid (RmPageId)

• sid (RmSlotId)

class RmFileScan(file: RmFile, predicate: RmPredicate | None = None)

Bases: object

Variables:

• file (RmFile)

• predicate (RmPredicate | None)

• cursor (RmScanCursor | None)

Raises:

RmRecordOutOfRangeError –

__iter__() → Iterator[RmRecord]

file scan을 순회하는 iterator를 반환합니다.

assignment__next__() → RmRecord

Raises:

StopIteration –

optional_init_cursor() → None

Hint

이런 함수가 있으면 편하다!

optional_advance_cursor() → None

Hint

이런 함수가 있으면 편하다!

optional_fetch_record() → RmRecord | None

Hint

이런 함수가 있으면 편하다!

optional_match_record(record: RmRecord) → bool

Hint

이런 함수가 있으면 편하다!