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#
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from typing import Any, Dict, Callable
import xarray as xr
from .abc import MultiLevelDataset
from .lazy import LazyMultiLevelDataset
[docs]
class MappedMultiLevelDataset(LazyMultiLevelDataset):
def __init__(
self,
ml_dataset: MultiLevelDataset,
mapper_function: Callable[[xr.Dataset], xr.Dataset],
ds_id: str = None,
mapper_params: Dict[str, Any] = None
):
"""
"""
super().__init__(ds_id=ds_id,
parameters=mapper_params)
self._ml_dataset = ml_dataset
self._mapper_function = mapper_function
def _get_num_levels_lazily(self) -> int:
return self._ml_dataset.num_levels
def _get_dataset_lazily(self, index: int,
mapper_params: Dict[str, Any]) -> xr.Dataset:
return self._mapper_function(self._ml_dataset.get_dataset(index),
**mapper_params)
[docs]
def close(self):
self._ml_dataset.close()