Distributed query when value in IMap is hashMap

[Reed Wang]

Hi there, we have some requirement that the object field length stored in hazelcast IMap is dynamic so I choose HashMap to store the data, kind of like:

HazelcastInstance hz = Hazelcast.newHazelcastInstance(config);

IMap<String, Map<String, String>> map = hz.getMap("mapTest");

We also have needs to do some distributed query for this IMap, unfortunately when I tried error occurs:

Caused by: com.hazelcast.query.impl.QueryException: java.lang.IllegalArgumentException: There is no suitable accessor for 'wzk' on class 'class java.util.HashMap'

So currently there is no way for hazelcast to support this dynamic object and do a distributed query?

[noctarius]

Hi Reed,

Instead of using a HashMap you might want to go for serializing to JSON or you have to write your own predicates.

Chris

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[Reed Wang]

Thanks for the reply Chris, I think if I stored like JSON that I still couldn't use existing predicates right? maybe generate dynamic class is one way.

在 2014年10月4日星期六UTC+8下午10时03分52秒，Christoph Engelbert写道：