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Streamingfeatures #40

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db64f0e
initial playing with keyset pagination
bitner Jul 21, 2022
9e34276
Stream features rather than creating output all in memory first
bitner Jul 25, 2022
eaba0af
add links, fix geojson output
bitner Jul 25, 2022
eda1f47
paging links
bitner Jul 25, 2022
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16 changes: 11 additions & 5 deletions tifeatures/dbmodel.py
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Original file line number Diff line number Diff line change
Expand Up @@ -90,16 +90,22 @@ def id_column_info(self) -> Column: # type: ignore
if col.name == self.id_column:
return col

def columns(self, properties: Optional[List[str]] = None) -> List[str]:
def columns(
self, properties: Optional[List[str]] = None, nogeo: bool = False
) -> List[str]:
"""Return table columns optionally filtered to only include columns from properties."""
cols = [c.name for c in self.properties]
if nogeo:
cols = [c.name for c in self.properties if not c.type.startswith("geo")]
else:
cols = [c.name for c in self.properties]
if properties is not None:
if self.id_column not in properties:
properties.append(self.id_column)

geom_col = self.geometry_column()
if geom_col:
properties.append(geom_col.name)
if not nogeo:
geom_col = self.geometry_column()
if geom_col:
properties.append(geom_col.name)

cols = [col for col in cols if col in properties]

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