paimon-python/pypaimon/write/table_delete.py

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# to you under the Apache License, Version 2.0 (the
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#   http://www.apache.org/licenses/LICENSE-2.0
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from typing import TYPE_CHECKING, List, Optional

from pypaimon.write.commit_message import CommitMessage
from pypaimon.write.row_input import RowIdInput, normalize_row_ids

if TYPE_CHECKING:
    from pypaimon.execution.python.write.table_delete import _AnchorRangesInfo


class TableDeleteByRowId:
    """Prepare row deletion messages for a table."""

    def __init__(self, table, _precomputed_anchor_ranges: Optional['_AnchorRangesInfo'] = None):
        self.table = table
        from pypaimon.write.backend_dispatch import create_row_id_delete_execution
        self._execution = create_row_id_delete_execution(table, _precomputed_anchor_ranges)

    @classmethod
    def _from_python(cls, table, _precomputed_anchor_ranges=None):
        """Create within an operation that has already selected Python execution."""
        owner = cls.__new__(cls)
        owner.table = table
        from pypaimon.write.backend_dispatch import create_python_row_id_delete
        owner._execution = create_python_row_id_delete(table, _precomputed_anchor_ranges)
        return owner

    def delete(self, row_ids: RowIdInput) -> List[CommitMessage]:
        """Delete sequence or integer Arrow IDs; duplicate IDs are idempotent."""
        return self._execution.delete(normalize_row_ids(row_ids))

    def _snapshot_anchor_ranges(self):
        # Ray's metadata coordinator selects _from_python explicitly. Native
        # writers must never initialize Python's anchor planner on demand.
        return self._execution._snapshot_anchor_ranges()