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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.
35 lines
925 B
Python
35 lines
925 B
Python
from ctypes import c_float
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from .base import FormatColumn
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class FloatColumn(FormatColumn):
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py_types = (float, int)
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class Float32Column(FloatColumn):
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ch_type = 'Float32'
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format = 'f'
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def __init__(self, types_check=False, **kwargs):
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super(Float32Column, self).__init__(types_check=types_check, **kwargs)
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if types_check:
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# Chop only bytes that fit current type.
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# Cast to -nan or nan if overflows.
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def before_write_items(items, nulls_map=None):
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null_value = self.null_value
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for i, item in enumerate(items):
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if nulls_map and nulls_map[i]:
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items[i] = null_value
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else:
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items[i] = c_float(item).value
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self.before_write_items = before_write_items
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class Float64Column(FloatColumn):
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ch_type = 'Float64'
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format = 'd'
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