Question

In the client side, I have constructed a JSOnARRAY like this:

{"filterEntries":[{"dataName":"mainContact","filterValue":"BILLGATES"}]}.

On the server side (java), I can retireve the values using :

jfilter = JSONValue.parse(jsonFilterStr); //jsonFilterStr={"filterEntries":[{"dataName":"mainContact","filterValue":"BILLGATES"}]}.

JSONArray jFilterEntries = (JSONArray) jfilter.get("filterEntries");
for (int i=0;i<jFilterEntries.size();i++){
    JSONObject jFilterEntry = (JSONObject) jFilterEntries.get(i);
    String dataName = (String) jFilterEntry.get("dataName");
    String filterValue = (String) jFilterEntry.get("filterValue");
}

But the existing app is using flex.json.deserializer and I am unable to achieve the same using flex.json.deserializer. How should I proceed?
I wish to do something like this:

JSONDeserializer jsonDeserializer = new JSONDeserializer();
jsonDeserializer.use(null, List.class);
List<Map<String,String>>    lMap= (List<Map<String,String>>)jsonDeserializer.deserialize(params);

Answer 1

Remember the top object that wraps the array. You have to handle that as well. You have to tell it to expect a Map inside the List. To do that you have to specify the type contained in the list by using the path expression “values”.

Map<String,List<Map<String,String>>> result = new JSONDeserializer<Map<String,List<Map<String,String>>>>()
    .use("values",List.class)
    .use("values.values", Map.class)
    .deserialize( json);

List<Map<String,String>> filterEntries = result.get("filterEntries");

Updated: Add the new keyword, and made the generic types on the right match the left.