Listgrid json format

[narvik]

Hi.
SmartClient Version: v9.0_2013-07-03/LGPL Development Only (built 2013-07-03), both ff and chrome

I cannot get ListGrid working with the json format described here:
http://www.smartclient.com/smartgwt/...ataSource.html

public class SGwtUI implements EntryPoint {
    public void onModuleLoad() {
        VLayout main = new VLayout();
        ListGrid worklistGrid = new ListGrid();
        worklistGrid.setDataSource(WorklistDataSource.getInstance());
        worklistGrid.setAutoFetchData(true);

        main.addMember(worklistGrid);
        main.draw();
    }
}

public class WorklistDataSource extends RestDataSource {

    public static final String ID = "worklistDS";
    private static final WorklistDataSource INSTANCE = new WorklistDataSource();

    public static WorklistDataSource getInstance() {
        return INSTANCE;
    }
    
    private WorklistDataSource() {
        setID(ID);
        setClientOnly(false);
        setFields(generateFields());
        setOperationBindings(generateOperationBindings());
    }

    private OperationBinding[] generateOperationBindings() {
        List<OperationBinding> operationBindings = new ArrayList<OperationBinding>();

        OperationBinding fetchOB = new OperationBinding(DSOperationType.FETCH, "servlet");
        fetchOB.setDataProtocol(DSProtocol.POSTPARAMS);
        fetchOB.setDataFormat(DSDataFormat.JSON);
        operationBindings.add(fetchOB);

        return operationBindings.toArray(new OperationBinding[operationBindings.size()]);
    }

    private DataSourceField[] generateFields() {

        List<DataSourceField> dsFields = new ArrayList<DataSourceField>();

        DataSourceField idField = new DataSourceIntegerField("id");
        idField.setPrimaryKey(true);
        dsFields.add(idField);

        DataSourceField typeField = new DataSourceTextField("code", "Type");
        dsFields.add(typeField);

        DataSourceField startField = new DataSourceDateField("started", "Started");
        dsFields.add(startField);
        return dsFields.toArray(new DataSourceField[dsFields.size()]);
    }

}

When the server response is:

{
"response":{
  "status":0,
  "startRow":0,
  "endRow":1,
  "totalRows":2,
  "data":[
    {"id":768,"code":"d","started":"2013-11-20T14:34:39Z"},
    {"id":1242,"code":"p","started":"2013-11-20T14:34:45Z"}
  ]}
}

I get three empty rows with no error in dev console.

But with

{
"response":{
  "status":0,
  "startRow":0,
  "endRow":1,
  "totalRows":2,
  "data":{
    "WHATISTHIS":[
      {"id":768,"code":"d","started":"2013-11-20T14:34:39Z"},
      {"id":1242,"code":"p","started":"2013-11-20T14:34:45Z"}
    ]}
  }
}

it shows correct two rows.

Has the format changed or do you have any idea what is causing this?
Thanks

[Isomorphic]

We're not showing this issue. It suggests that, although you don't show it here, elsewhere you have code that is overriding the default recordXPath for RestDataSource, installing a ResponseTransformer, or in some other way interfering with normal behavior.

[narvik]

Thank you for the fast response!
According to console my JSON recordXPath is '/response/data/*' which is the default for XML. That's really weird because the only thing I changed in the shared code was path to the servlet (I use '/projectname/servletname/list') and removed layout design.

21:22:45.614:XRP5:DEBUG:RPCManager:Result string for transaction 0: "{"response":{"status":0,"startRow":0,"endRow":1,"totalRows":2,"data":[{"id":768,"code":"d","started":"2013-11-20T14:34:39Z"},{"id":1242,"code":"p","started":"2013-11-20T14:34:45Z"}]}}"
21:22:45.615:XRP5:INFO:RPCManager:rpcResponse(unstructured) results -->"{"response":{"status":0,"startRow":0,"endRow":1,"totalRows":2,"data":[{"id":768,"code":"d","started":"2013-11-20T14:34:39Z"},{"id":1242,"code":"p","started":"2013-11-20T14:34:45Z"}]}}"<--
21:22:45.616:XRP5:INFO:RestDataSource:worklistDS:DataSource specifies jsonPrefix, but not present in response returned from server. Processing response anyway.
21:22:45.616:XRP5:INFO:RestDataSource:worklistDS:DataSource specifies jsonSuffix, but not present in response returned from server. Processing response anyway.
21:22:45.617:XRP5:DEBUG:xmlBinding:worklistDS:Raw response data: {
    "response":{
        "status":0, 
        "startRow":0, 
        "endRow":1, 
        "totalRows":2, 
        "data":[
            {
                "id":768, 
                "code":"d", 
                "started":"2013-11-20T14:34:39Z"
            }, 
            {
                "id":1242, 
                "code":"p", 
                "started":"2013-11-20T14:34:45Z"
            }
        ]
    }
}
21:22:45.618:XRP5:INFO:xmlBinding:worklistDS:JSON recordXPath: '/response/data/*', selected: Array[3]
21:22:45.618:XRP5:DEBUG:xmlBinding:worklistDS:Validated dsResponse.data: [
    768, 
    "d", 
    "2013-11-20T14:34:39Z"
]
21:22:45.621:XRP5:INFO:xmlBinding:worklistDS:dsResponse is: {data: Array[3],
startRow: 0,
status: 0,
endRow: 3,
totalRows: 3,
httpResponseCode: 200,
transactionNum: 0,
clientContext: Obj,
httpHeaders: Obj}
21:22:45.640:XRP5:INFO:ResultSet:isc_ResultSet_0 (created by: isc_ListGrid_0):Received 3 records from server
21:22:45.641:XRP5:DEBUG:ResultSet:isc_ResultSet_0 (created by: isc_ListGrid_0):full length set to: 3
21:22:45.641:XRP5:DEBUG:ResultSet:isc_ResultSet_0 (created by: isc_ListGrid_0):integrating 3 rows into cache at position 0
21:22:45.641:XRP5:INFO:ResultSet:isc_ResultSet_0 (created by: isc_ListGrid_0):cached 3 rows, from 0 to 3 (3 total rows, 3 cached)
21:22:45.641:XRP5:INFO:ResultSet:isc_ResultSet_0 (created by: isc_ListGrid_0):Cache for entire DataSource complete
21:22:45.693:XRP5:INFO:redraws:isc_ListGrid_0_body:Scheduling redraw (dataChanged)
    [a]MathFunction.getStackTrace(_1=>undef, _2=>undef, _3=>undef, _4=>undef, _5=>undef)
    Canvas.$q9(_1=>"dataChanged", _2=>undef)
    Canvas.markForRedraw(_1=>"dataChanged", undef, undef, undef, undef)
    isc_Arra_map(_1=>"markForRedraw", _2=>"dataChanged", _3=>undef, _4=>undef, _5=>undef, _6=>undef)
    ListGrid.$25a(_1=>"dataChanged")
    ListGrid.redrawForDataChanged()
    ListGrid.dataChanged(_1=>undef, _2=>undef, _3=>undef, _4=>undef, _5=>undef)
    dataChangedObservation(operationType=>undef, originalRecord=>undef, rowNum=>undef, updateData=>undef, filterChanged=>undef, dataFromCache
/**/=>undef)
    ResultSet.$ee(_1=>undef, _2=>undef)
    ResultSet.$390(_1=>Array[3], _2=>Obj)
    ResultSet.fetchRemoteDataReply(dsResponse=>Obj, data=>Array[3], request=>Obj)
    [c]Class.fireCallback(_1=>Obj, _2=>"dsResponse,data,dsRequest", _3=>Array[3], _4=>[ResultSet ID:isc_ResultSet_0 (created by: isc_ListGrid_0)], _5=>undef) on [Class RestDataSource]
    [a]MathFunction.fireCallback(_1=>Obj, _2=>"dsResponse,data,dsRequest", _3=>Array[3], _4=>undef)
    DataSource.fireResponseCallbacks(_1=>Obj, _2=>Obj, _3=>Obj, _4=>Obj)
    DataSource.$38b(_1=>Obj, _2=>Obj, _3=>Obj, _4=>Obj, _5=>Obj)
    DataSource.$377(_1=>Obj, _2=>Array[3], _3=>Obj)
    DataSource.$379(rpcResponse=>Obj, jsonText=>"{"response":{"status":0,"startRow":0,"en..."[201], rpcRequest=>Obj)
    ** recursed on [c]Class.fireCallback

EDIT: adding setJsonRecordXPath("/response/data"); to WorklistDataSource constructor does not help :(

[Isomorphic]

Ah, we see the issue. The default dataFormat at the DataSource level is XML. You've changed the dataFormat *for just fetch* to JSON, which means the recordXPath for XML is being used against the JSON format.

This is a valid combination of settings - it would mean you'd like to fetch in JSON but do other operations in XML - but probably not what you intended. Just set the dataFormat for the DataSource as a whole to JSON to use JSON for all operations.

[narvik]

Your advice fixed the issue. Thanks again.