async def next(self):
if not self.has_next():
raise IteratorExhausted()
mu = await self._source.next()
while not self._evaluate(mu):
mu = await self._source.next()
return mu
async def next(self):
"""Get the next element from the join"""
if not self.has_next():
raise IteratorExhausted()
if self._currentIter is None or (not self._currentIter.has_next()):
self._currentBinding = await self._source.next()
self._currentIter = self._initInnerLoop(self._innerTriple, self._currentBinding)
return await self._innerLoop()
async def next(self):
"""
Get the next item from the iterator, reading from the left source and then the right source
"""
if not self.has_next():
raise IteratorExhausted()
value = await self._source.next()
if self._values is None:
return value
return {k: v for k, v in value.items() if k in self._values}
async def next(self):
"""Get the next element from the join"""
if not self.has_next():
raise IteratorExhausted()
cpt = 0
while self._currentIter is None or (not self._currentIter.has_next()):
cpt += 1
self._currentBinding = await self._source.next()
self._currentIter = self._initInnerLoop(self._innerTriple, self._currentBinding)
# WARNING: await sleep(0) cost a lot, so we only trigger it every 50 cycle.
# additionnaly, there may be other call to await sleep(0) in index join in the pipeline.
if cpt > 50:
cpt = 0
await sleep(0)
return await self._innerLoop()
async def next(self):
"""Scan the relation and return the next set of solution mappings"""
if not self.has_next():
raise IteratorExhausted()
mappings = selection(next(self._source), self._variables)
return mappings