I am trying to use SCDF to split and aggregate my list. But I can't aggregate as expected.
My SCDF is being fed by a list over rabbitmq each minute. Let's say i have a list consisting of objects like:
[{"foo" : "11", "bar" : "21"},{"foo" : "11", "bar" : "22"},{"foo" : "12", "bar" : "23"}]
I am splitting the array into the objects in splitter as: app.splitter.expression=#jsonPath(payload,'$.[*]') and it is working as expected.
And in the aggregator, I want to aggregate them based on the value of the property foo, so that the result of aggregation should be two different arrays like:
[{"foo" : "11", "bar" : "21"},{"foo" : "11", "bar" : "22"}]
[{"foo" : "12", "bar" : "23"}]
I set the correlation as: app.aggregator.correlation=#jsonPath(payload,'$.foo') but I dont know how to set release SpEL expression.
Can you show me how should i set release?
PS: As a workaround, I tried to add a last object to the list for detecting it is the end of the list. So, I add {{"foo" : "EoS"} object to the list. And in the release I tried: app.aggregator.release=!messages.?[new String(payload).contains("EoS")].empty but it didn't work.
