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Periodical updating ListGrid is possible in the following ways:
- Use Using the invalidateCache method. It update method. This approach updates the data and will show a loading message and . However, this API will disrupt the existing view.
- Transparent update by by DataSource using using the fetchData method. It update the data will not method. This method updates the data but doesn't show a loading message and will not won't disrupt the existing view.
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Transparent update
For transparent loading of the data the fetchData method should be used fetchData method.
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var dataSource = supplyItemListGrid.getDataSource();
var request = {
startRow: 0,
endRow: (supplyItemListGrid.getVisibleRows()[1] + supplyItemListGrid.data.resultSize),
sortBy: supplyItemListGrid.getSort(),
showPrompt: false
};
var callback = function(dsResponse,data,dsRequest) {
var resultSet = isc.ResultSet.create({
dataSource: supplyItemListGrid.getDataSource(),
initialLength: dsResponse.totalRows,
initialData: dsResponse.data,
sortSpecifiers: supplyItemListGrid.getSort()
});
supplyItemListGrid.setData(resultSet);
};
dataSource.fetchData(supplyItemListGrid.getCriteria(), callback, request);
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