FrameIndexData

class standard_e2e.data_structures.FrameIndexData(**data)

Bases: BaseModel

Frame index metadata (for parquet serialization).

Parameters:

• dataset_name (str)

• segment_id (str)

• frame_id (int | str)

• timestamp (float)

• split (str)

• filename (str)

• extra_index_data (dict | None)

dataset_name: str

extra_index_data: dict | None

filename: str

frame_id: int | str

classmethod save_index_data(index_data, output_path)

Persist a list of index entries to a sorted Parquet file.

Parameters:

• index_data (list[FrameIndexData]) – Sequence of frame index records to serialize.

• output_path (str) – Directory where the Parquet file will be written.

Returns:

The sorted index dataframe that was written to disk.

Return type:

DataFrame

segment_id: str

split: str

timestamp: float

to_index_dict()

Convert index metadata to a flat dictionary used for Parquet writes.

Extra fields stored in extra_index_data are prefixed with extra_ to keep backward compatibility with legacy index files.

Return type:

dict