48 lines
931 B
Python
48 lines
931 B
Python
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class LongOpStatus(object):
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def __init__(self):
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self._cancel = False
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def cancel(self):
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self._cancel = True
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def shouldCancel(self):
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return self._cancel
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class CursorIterator(object):
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def __init__(self,db,cursor):
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self._db = db
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self._cursor = cursor
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self._status = LongOpStatus()
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def __iter__(self):
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try:
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# Emit start signal
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self._db.emit('long-op-start',(self._status,))
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first = self._cursor.first()
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if first:
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yield first
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next = self._cursor.next()
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while next:
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yield next
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# check for cancel
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#if self._status.shouldCancel():
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# raise GrampsDbUserCancel
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# emit heartbeat
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self._db.emit('long-op-heartbeat')
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next = self._cursor.next()
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# emit stop signal
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self._db.emit('long-op-end')
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self._cursor.close()
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raise StopIteration
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except:
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self._cursor.close()
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self._db.emit('long-op-end')
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raise
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