paimon_python_api/read_builder.py

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from abc import ABC, abstractmethod
from table_read import TableRead
from table_scan import TableScan
from typing import List
from typing_extensions import Self


class ReadBuilder(ABC):
    """An interface for building the TableScan and TableRead."""

    @abstractmethod
    def with_projection(self, projection: List[List[int]]) -> Self:
        """Push nested projection."""

    @abstractmethod
    def with_limit(self, limit: int) -> Self:
        """Push row number."""

    @abstractmethod
    def new_scan(self) -> TableScan:
        """Create a TableScan to perform batch planning."""

    @abstractmethod
    def new_read(self) -> TableRead:
        """Create a TableRead to read splits."""