Class SparseVector

lib/sqlalchemy/dialects/oracle/vector.py:201–231

Lightweight SQLAlchemy-side version of SparseVector. This mimics oracledb.SparseVector. .. versionadded:: 2.0.43

class SparseVector:
    """
    Lightweight SQLAlchemy-side version of SparseVector.
    This mimics oracledb.SparseVector.

    .. versionadded:: 2.0.43

    """

    def __init__(
        self,
        num_dimensions: int,
        indices: Union[list, array.array],
        values: Union[list, array.array],
    ):
        if not isinstance(indices, array.array) or indices.typecode != "I":
            indices = array.array("I", indices)
        if not isinstance(values, array.array):
            values = array.array("d", values)
        if len(indices) != len(values):
            raise TypeError("indices and values must be of the same length!")

        self.num_dimensions = num_dimensions
        self.indices = indices
        self.values = values

    def __str__(self):
        return (
            f"SparseVector(num_dimensions={self.num_dimensions}, "
            f"size={len(self.indices)}, typecode={self.values.typecode})"
        )


class VECTOR(types.TypeEngine):