in case no recors found for query, JSON output is 0.



 Structure of the JSON output of queries
------------------------------------------

[ 

    [
        {"name": "countries", 
         "description": "Countries", 
         "header": ["@","Name","Area"], 
         "values":  [ 
                        [    
                            {"shplink": ["countries","10","3057923.0500429+2026548.815946+4290283.2615152+3218639.2567819"]}, 
                            "France", 
                            "548780908430.388"
                        ], 
                        
                        [   {"shplink": ["countries","18","4010837.8743164+1381902.3825304+5099564.4860098+2701742.8339509"]}, 
                            "Italy", 
                            "301635595620.649"
                        ]
                    ]
        } , 
        
        {"name": "cities", 
         "description": "Cities", 
         "header": ["@","Name","Administrative Entity","Country","Status","Inhabitants"], 
         "values":  [ 
                        [
                            {"shplink": ["cities","284","3756950.5208565+2881684.8778978+3776950.5376764+2901684.9015424"]}, 
                            {"hyperlink": ["cities","CITY_NAME","Paris","Paris"]}, 
                            "Ile-del-France", {"hyperlink": ["cities","CNTRY_NAME","France","Link on detail"]}, 
                            "Provincial capital", 
                            "1,000,000 to 5,000,000"
                        ]
                    ]
        } 
    ], 
    
    {"allextent": "", "zoomall": false, "autozoom": false, "infoWin": "window"} 
];




ROOT ARRAY
----------
ROOT ARRAY (line 5-41) containing 
* result ARRAY (7-38)
* zoom parameters OBJECT (40)


    RESULT ARRAY
    ------------
    every GROUP is an object, e.g. the group countries line 8-23, cities 25-37


        GROUP OBJECT
        ------------
        properties: 
        * name: NAME in map file
        * description: METADATA "DESCRIPTION" in map file (STRING)
        * header: METADATA "RESULT_HEADERS" in map file (ARRAY)
            header ARRAY : list of header values
            ------------
        
        * values: ARRAY of all records (=rows)
          (same number of elements as 'header' array)

            values ARRAY
            ------------
            ARRAY for each record (feature)
            
                RECORD ARRAY
                ------------
                    list of STRINGS (normal values) and OBJECTS (shplink and hyperlink)

                    shplink OBJECT
                    --------------
                    properties: 
                    ARRAY of 3 values: 
                        1) group name 
                        2) feature index in dataset
                        3) feature extent
                    NOT existing for WMS layers

                    hyperlink OBJECT
                    ----------------
                    properties: 
                    ARRAY of 4 values: 
                        1) layer name 
                        2) field name (as in dataset)
                        3) field value
                        4) display name query results

                    'normal' value as STRING
                
                
        
        
        
    ZOOM PARAMETERS OBJECT
    ----------------------
    properties:
    * allextent: 
        STRING with max zoom extent (search & select/nquery)
    
    * zoomall: 
        false (identify) OR true (search & select/nquery)   
            if true:  should do: add button/link with max extent 
        
    * autozoom: 
        false: identify (query)
        "auto": initiate automatic zoom (after search or select)
                     should do: applying max extent for all retrieved features (from zoomall)
        "highlight": initiate map refresh to add highlight features to map
        
        
    * infoWin: infoWin settings in config.ini
        "window" OR "frame"
        used to determine link target