Index text field as JSON

[rbkio]

Is there a way, using stratio index, I can index a text column in my Cassandra table as a json object and query on the keys with in the json?

For example consider the below table structure :
CREATE TABLE test (pk int PRIMARY KEY, json_text text, lucene text);

My data in this table looks like this :

pk	json_text	lucene
1	{"key1":"Value1","key2":"Value2","key3":"Value3"}
2	{"key2":"AnotherValue1","key3":"AnotherValue2","key5":"AnotherValue3"}

Can I create any such index :

CREATE CUSTOM INDEX idx ON test(lucene)
    USING 'com.stratio.cassandra.lucene.Index'
    WITH OPTIONS = {
        'schema': '{
            fields: {
                json_text: {type: "json"}
            }
        }'
    };

And do queries like below or anything similar :

SELECT * FROM test WHERE expr(lucene, '{    
   filter: {    
      type: "match",
      field: "json_text.key1",
      value: "Value1"
   }
}');

I know I can use maps to achieve what I am trying to do here with json text column. But, I have read about and faced issues with huge maps in Cassandra. So, trying to avoid maps and trying to get similar functionality with strings. Any suggestions?

[dbapramod882]

Can you try "select JSON a, b from....." Not sure if i am correct.

[rbkio]

My intention here is not to get results back as JSON, but to index my string column as json.
Checking if something of this sort is possible with Stratio indexes.