An extractor for JSON. Nested objects have their fields
concatenated with field_separator. An array is converted into a
multi-valued field.
{"name":"ryan",
"info":{"city":"Baltimore",
"visited":["Boston", "New York", "San Francisco"]}}
[{<<"info_visited">>,<<"San Francisco">>},
{<<"info_visited">>,<<"New York">>},
{<<"info_visited">>,<<"Boston">>},
{<<"info_city">>,<<"Baltimore">>},
{<<"name">>,<<"ryan">>}]Options:
field_separator - Use a different field separator than the
default of ..Generated by EDoc