I have a problem with running below procedure in oracle 11g because of the JSON value feature not available in 11g. Can you please help in correcting the procedure.

create or replace PROCEDURE             "STANDARDIZE_ADDRESS"  (   JSON_DOC IN VARCHAR2 , JSON_OUT OUT VARCHAR2 ) is     CNTRY_IN VARCHAR2(100);     STATE_IN VARCHAR2(100);     CITY_IN VARCHAR2(100);     LAT_IN VARCHAR2(100);     LONG_IN VARCHAR(100);     SOURCE VARCHAR2(100);      COUNTRY_NAME VARCHAR2(100);     COUNTRY_ID RAW(16);     STATE_NAME VARCHAR2(100);     STATE_ID RAW(16);     CITY_NAME VARCHAR2(100);     CITY_ID RAW(16);     REGION_ID RAW(16);      MAP_COUNTRY VARCHAR2(100);     MAP_STATE VARCHAR2(100);     MAP_CITY VARCHAR(100);      COUNTRYSEQ NUMBER;     UNK_REGION RAW(16);      OUTPUT_STR VARCHAR2(3000);      QUOTE_REPLACE VARCHAR2(4); BEGIN     QUOTE_REPLACE := 'zqzq';     UNK_REGION := HEXTORAW('00000000000000000000000000000000');      -- Parse values from JSON     select json_value(json_doc,'$  .Country'),            json_value(json_doc,'$  .State'),            json_value(json_doc,'$  .City'), --         json_value(json_doc,'$  .Latitude'), --         json_value(json_doc,'$  .Longitude'),            json_value(json_doc,'$  .Source')         into cntry_in, state_in, city_in, source          from dual;      -- Any blanks get treated as "None" (so there are no null entries in DB     CNTRY_IN := NVL(CNTRY_IN,'none');     STATE_IN := NVL(STATE_IN,'none');     CITY_IN  := NVL(CITY_IN,'none');     SOURCE   := UPPER(NVL(SOURCE,'unknown'));      -- Check to see if passed in address matches Master data     BEGIN         -- Query against standard list         select COUNTRYNAME, COUNTRYID, STATENAME, STATEID, CITYNAME, CITYID             into COUNTRY_NAME, COUNTRY_ID, STATE_NAME, STATE_ID, CITY_NAME, CITY_ID             from STANDARDLIST_VIEW             where (CountryName = CNTRY_IN or CountryCode = UPPER(CNTRY_IN))               and StateName = STATE_IN               and CityName = CITY_IN;          DBMS_OUTPUT.PUT_LINE('Using Standard Data');     EXCEPTION         WHEN OTHERS THEN             -- Replace special characters and Standardize case of data             if (LENGTH(CNTRY_IN) > 2) then                 -- INITCAP function does not correctly case the character after an apostrophe.                 CNTRY_IN := REPLACE_SYMBOLS(REPLACE(INITCAP(CNTRY_IN),chr(39)||'S',chr(39)||'s'));             else                 -- Two characters are assumed to be CountryCode                 CNTRY_IN := REPLACE_SYMBOLS(UPPER(CNTRY_IN));             end if;              -- INITCAP function does not correctly case the character after an apostrophe.             STATE_IN := REPLACE_SYMBOLS(REPLACE(INITCAP(STATE_IN),chr(39)||'S',chr(39)||'s'));             if (LENGTH(STATE_IN) = 2 and (UPPER(CNTRY_IN) = 'UNITED STATES' or UPPER(CNTRY_IN) = 'US')) then                 -- Special case of US States are upper case 2-character, not title-cased                 STATE_IN := UPPER(STATE_IN);             end if;              -- INITCAP function does not correctly case the character after an apostrophe.             CITY_IN := REPLACE_SYMBOLS(REPLACE(INITCAP(CITY_IN),chr(39)||'S',chr(39)||'s'));              BEGIN                 -- Check mapping data to see if this has been translated to standard values                 select stdcountry,stdstate,stdcity                     into MAP_COUNTRY, MAP_STATE, MAP_CITY                     from GEO_MAPPING_VIEW                     where upper(srccountry) = upper(CNTRY_IN)                       and upper(srcstate) = upper(STATE_IN)                       and upper(srccity) = upper(CITY_IN);                  -- If we found a match use this data for lookup, else use our cleaned up data                 CNTRY_IN := MAP_COUNTRY;                 STATE_IN := MAP_STATE;                 CITY_IN  := MAP_CITY;                  DBMS_OUTPUT.PUT_LINE('Found Mapped Data');             EXCEPTION                 WHEN OTHERS THEN                     -- don't worry about error.  Use cleaned up data for building Non-Stand entries                     COUNTRY_ID := null;  -- dummy statement to trap error             END;              BEGIN                 -- Query against standard list                 select COUNTRYNAME, COUNTRYID, STATENAME, STATEID, CITYNAME, CITYID                     into COUNTRY_NAME, COUNTRY_ID, STATE_NAME, STATE_ID, CITY_NAME, CITY_ID                     from STANDARDLIST_VIEW                     where (CountryName = CNTRY_IN or CountryCode = CNTRY_IN)                       and StateName = STATE_IN  -- (StateName = STATE_IN or StateCode = UPPER(STATE_IN))                       and CityName = CITY_IN;                  DBMS_OUTPUT.PUT_LINE('Using Mapped/Cleaned Data');             EXCEPTION                 -- Build out table entries based on what's missing                 WHEN OTHERS THEN                     -- Query Country table by CountryName/CountryCode                     BEGIN                         select COUNTRYNAME, ID                             into COUNTRY_NAME, COUNTRY_ID                             from MASTER_COUNTRIES                             where CountryName = CNTRY_IN or CountryCode = CNTRY_IN or CountryISO3Code = UPPER(CNTRY_IN);                     EXCEPTION                         WHEN OTHERS THEN                             -- If record not found, Create Country entry                             COUNTRY_ID := null;                             COUNTRY_NAME := CNTRY_IN;                              -- select ID into REGION_ID from MASTER_REGIONS where REGION = 'NAM';                             REGION_ID := UNK_REGION;                             select SYS_GUID() into COUNTRY_ID from dual;                             -- Create value for CountryCode (starts at 10; iso3 issequnce value + 900)                             select SEQ_COUNTRYCODE.NEXTVAL into COUNTRYSEQ from dual;                              insert into MASTER_COUNTRIES (ID, COUNTRYCODE, COUNTRYISO3CODE, COUNTRYNAME, REGIONID, NONSTDSOURCE, NONSTDDATE, LASTMODIFIED)                             values (COUNTRY_ID, to_char(countryseq), to_char(countryseq + 900), COUNTRY_NAME, REGION_ID, SOURCE, SYSDATE, SYSTIMESTAMP);                      END;                              -- Query State table by StateName and CountryID                     BEGIN                         select STATENAME, STATEID                             into STATE_NAME, STATE_ID                             from MASTER_STATES                             where StateName = STATE_IN                               and CountryID = COUNTRY_ID;                     EXCEPTION                         WHEN OTHERS THEN                             -- If record not found, Create State entry                             STATE_ID := null;                             STATE_NAME := STATE_IN;                              select SYS_GUID() into STATE_ID from dual;                              insert into MASTER_STATES (STATEID, STATENAME, COUNTRYID, NONSTDSOURCE, NONSTDDATE, LASTMODIFIED)                             values (STATE_ID, STATE_NAME, COUNTRY_ID, SOURCE, SYSDATE, SYSTIMESTAMP);                      END;                              -- Query City table by CityName and StateID                     BEGIN                         select CITYNAME, CITYID                             into CITY_NAME, CITY_ID                             from MASTER_CITIES                             where CityName = CITY_IN                               and StateID = STATE_ID;                     EXCEPTION                         WHEN OTHERS THEN                             -- If record not found, Create City entry                             CITY_ID := null;                             CITY_NAME := CITY_IN;                              select SYS_GUID() into CITY_ID from dual;                              insert into MASTER_CITIES (CITYID, CITYNAME, STATEID, NONSTDSOURCE, NONSTDDATE, LASTMODIFIED)                             values (CITY_ID, CITY_NAME, STATE_ID, SOURCE, SYSDATE, SYSTIMESTAMP);                      END;                      DBMS_OUTPUT.PUT_LINE('Creating Non-Standard Data');             END;     END;      -- dbms_output.put_line(json_doc);      -- Build JSON Output     output_str := '{"Country":{"Name":"' || COUNTRY_NAME || '","ID":"' || RAWTOHEX(COUNTRY_ID) || '"},' ||                   '"State":{"Name":"' || STATE_NAME || '","ID":"' || RAWTOHEX(STATE_ID) || '"},' ||                   '"City":{"Name":"' || CITY_NAME || '","ID":"' || RAWTOHEX(CITY_ID) || '"}}';       -- dbms_output.put_line(cntry_in||','||state_in||','||city_in||','||source);     -- dbms_output.put_line(country_name||','||country_id||','||state_name||','||state_id||','||city_name||','||city_id);      json_out := output_str;  EXCEPTION   WHEN OTHERS THEN     DBMS_OUTPUT.PUT_LINE(SQLERRM);     json_out := '{}'; END;