nested data with ArrayReader

[kniget]

Hi all,

ExtJS 4 certainly makes it easy to read nested data into associated data stores/models. However, is it at all possible to read nested data using ArrayReader only? Note, I am referring to a data structure wholly composed of nested arrays - no objects - so as to conserve the bandwidth taken by repeating JSON object titles.

An example of such data would be:

[
    ['North America', [  
        ['United States',
            ['Alabama', 'Alaska', 'Arizona', ...]
        ],
        ['Canada',
            ['Alberta', 'British Columbia', 'Manitoba', ...]
        ], ...
    ],
    ['Central America', 
        ['Mexico',
            ['Aguascalientes', 'Baja California', 'Baja California Sur', ...]
        ], ...
    ], ...
]

I'd appreciate any insight.

Thanks,
Kniget

[deister]

I am also in interested in nested ArrayReader!!

Moreover, is it possible to nest a json objects with arrays?
Ideally, my store should consume objects like:

resultset : {

    "sqlinfo" : {
         "maxrows":-1,
         "total":1,
         "sql_sort":"",
         "sql_user":"xxx",
         "sql_dbms":"xxx",
         "sql_dbms_name":"xxx Postgres",
         "sql_engine":"postgres"
    },
    "rowset":[
        [4596.0,  490.0],
        [2596.4,  435.7],
        [596.0,    450.8],
        [1296.0,  390.9,]
    ],
    "metadata" : [{
        "columnName"  : "col1",
        "columnLabel" : "col1",
        "columnDisplaySize":40,
        "columnType":12,
        "columnTypeName":"numeric"        
    },{
        "columnName"  : "col2",
        "columnLabel" : "col2",
        "columnDisplaySize":40,
        "columnType":12,
        "columnTypeName":"numeric"        
    }]
}

As far as I know, the reader is configured in the store definition, not in the model. Am I right?

Is it possible to haved nested arrays with json objects?

Thanks!

[kniget]

Deister,

You can consume an array from a JSON object by defining (in the store or model intended to receive the JSON object) a hasMany association to the array, and providing the association with a storeConfig to an ArrayReader, like so:

hasMany: {model: '[name of model for a single array record]', name: '[name of array in the JSON object]', storeConfig: {reader: {type: 'array'}}}

That still leaves my original question open: is it possible to consume nested arrays?

Kniget