问题
I have an class that has a map as one of its fields. Is there a way in Hazelcast using predicates to query for object where the key in the map has the values I am looking for?
回答1:
Queries on maps are not yet implemented (as they are out of the box for lists / arrays). It is, however, possible to implement your own ValueExtractor to extract the values from the map based on your key.
http://docs.hazelcast.org/docs/3.8/manual/html-single/index.html#custom-attributes
来源：https://stackoverflow.com/questions/43691378/hazelcast-is-there-a-way-to-iterate-over-a-map-keys-and-or-values-to-query