apoc.periodic.countdown
Procedure APOC Core
apoc.periodic.countdown('name',statement,repeat-rate-in-seconds) submit a repeatedly-called background statement until it returns 0
Signature
apoc.periodic.countdown(name :: STRING?, statement :: STRING?, rate :: INTEGER?) :: (name :: STRING?, delay :: INTEGER?, rate :: INTEGER?, done :: BOOLEAN?, cancelled :: BOOLEAN?)
Output parameters
Name | Type |
---|---|
name |
STRING? |
delay |
INTEGER? |
rate |
INTEGER? |
done |
BOOLEAN? |
cancelled |
BOOLEAN? |
Usage Examples
The examples in this section are based on the following sample graph:
CREATE (:Counter {value: 10000});
The following decrements the
value
once a second until it gets to 0:CALL apoc.periodic.countdown(
"decrement",
"MATCH (counter:Counter)
SET counter.value = counter.value - 1
RETURN counter.value as count",
1);