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zeekay
eb74c996a6
Imports read `datastore_driver`, distribution `datastore-driver`, so nothing has to import another product's name to talk to Hanzo Datastore. Cut from upstream 0.2.9 — the version this stack already ran — rather than from upstream HEAD, so it is a PURE RENAME with no behaviour change. Forking from HEAD would have dragged versions along with the name (connect alone jumped 0.8.17 -> 1.6.0, a major), which is a different and much riskier change wearing a rename's clothes. X-ClickHouse-* headers are untouched: they are wire protocol the server sends and expects, and a different token shape from the module name.
38 lines
1.2 KiB
Python
38 lines
1.2 KiB
Python
import numpy as np
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from .base import NumpyColumn
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from ..util import get_inner_spec, get_inner_columns
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class TupleColumn(NumpyColumn):
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def __init__(self, nested_columns, **kwargs):
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self.nested_columns = nested_columns
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super(TupleColumn, self).__init__(**kwargs)
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def write_data(self, items, buf):
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names = items.dtype.names
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for i, (x, name) in enumerate(zip(self.nested_columns, names)):
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x.write_data(items[name], buf)
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def write_items(self, items, buf):
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return self.write_data(items, buf)
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def read_data(self, n_items, buf):
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data = [x.read_data(n_items, buf) for x in self.nested_columns]
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dtype = [('f{}'.format(i), x.dtype) for i, x in enumerate(data)]
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rv = np.empty(n_items, dtype=dtype)
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for i, x in enumerate(data):
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rv['f{}'.format(i)] = x
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return rv
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def read_items(self, n_items, buf):
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return self.read_data(n_items, buf)
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def create_tuple_column(spec, column_by_spec_getter, column_options):
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inner_spec = get_inner_spec('Tuple', spec)
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columns = get_inner_columns(inner_spec)
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return TupleColumn([column_by_spec_getter(x) for x in columns],
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**column_options)
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