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Revision 1893

sql.py: Made row() and value() cache the result by fetching all rows before returning the first row

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sql.py
6 6
import warnings
7 7

  
8 8
import exc
9
import iters
9 10
from Proxy import Proxy
10 11
import rand
11 12
import strings
......
180 181

  
181 182
def rows(cur): return iter(lambda: cur.fetchone(), None)
182 183

  
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def row(cur): return rows(cur).next()
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def next_row(cur): return rows(cur).next()
184 185

  
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def row(cur):
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    row_iter = rows(cur)
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    row_ = row_iter.next()
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    iters.consume_iter(row_iter) # fetch all rows so result will be cached
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    return row_
191

  
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def next_value(cur): return next_row(cur)[0]
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185 194
def value(cur): return row(cur)[0]
186 195

  
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def values(cur): return iter(lambda: value(cur), None)
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def values(cur): return iters.func_iter(lambda: next_value(cur))
188 197

  
189 198
def value_or_none(cur):
190 199
    try: return value(cur)

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