Revision 2902
Added by Aaron Marcuse-Kubitza over 12 years ago
| lib/sql_gen.py | ||
|---|---|---|
| 153 | 153 |
def is_underlying_table(table): |
| 154 | 154 |
return isinstance(table, Table) and table.to_Table() is table |
| 155 | 155 |
|
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class NoUnderlyingTableException(Exception): pass |
|
| 157 |
|
|
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def underlying_table(table): |
|
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table = remove_table_rename(table) |
|
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if not is_underlying_table(table): raise NoUnderlyingTableException |
|
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return table |
|
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|
|
| 156 | 163 |
def as_Table(table, schema=None): |
| 157 | 164 |
if table == None or isinstance(table, Code): return table |
| 158 | 165 |
else: return Table(table, schema) |
| ... | ... | |
| 260 | 267 |
if isinstance(col, NamedCol): col = col.code |
| 261 | 268 |
return col |
| 262 | 269 |
|
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class NoUnderlyingTableException(Exception): pass |
|
| 264 |
|
|
| 265 | 270 |
def underlying_col(col): |
| 266 | 271 |
col = remove_col_rename(col) |
| 267 | 272 |
if not isinstance(col, Col): raise NoUnderlyingTableException |
| 268 | 273 |
|
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table = remove_table_rename(col.table) |
|
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if not is_underlying_table(table): raise NoUnderlyingTableException |
|
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|
|
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return Col(col.name, table, col.srcs) |
|
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return Col(col.name, underlying_table(col.table), col.srcs) |
|
| 273 | 275 |
|
| 274 | 276 |
def wrap(wrap_func, value): |
| 275 | 277 |
'''Wraps a value, propagating any column renaming to the returned value.''' |
Also available in: Unified diff
sql_gen.py: Added underlying_table() and use it in underlying_col()