remoteOperations
Notifies the DataGrid of the server's data processing operations.
Server-side data processing improves the widget's performance on large datasets. When the server does not implement particular operations (and/or the corresponding remoteOperations fields are false) they are executed on the client. Note that the widget may send queries to the server while executing a client-side operation.
The following table lists the possible remoteOperations configurations and the operations the server should implement. The server should also implement additional operations depending on the used widget functionality.
| Setting | Required server-side operations | Additional server-side operations |
|---|---|---|
remoteOperations: true |
all operations except group paging | - |
remoteOperations: { groupPaging: true } |
all operations including group paging | - |
remoteOperations: { paging: true } |
paging | filtering1, sorting1, summary calculation1 |
remoteOperations: { paging: true }(with grouping used in the widget) |
paging, filtering, sorting | grouping3, summary calculation1 |
remoteOperations: { filtering: true } |
filtering | - |
remoteOperations: { sorting: true } |
sorting | filtering1 |
remoteOperations: { grouping: true } |
grouping, filtering | sorting1, summary calculation1 |
remoteOperations: { summary: true } |
summary calculation | filtering1, sorting2, grouping2 |
2 - If group summary calculation is used.
3 - If grouping.autoExpandAll is set to false
The following restrictions apply when operations are remote:
- Sorting, grouping and filtering columns with the calculateCellValue or calculateDisplayValue option is not supported.
- The calculateGroupValue and calculateSortValue options accept only string values.
- Custom summary calculation is not supported.
- If the grouping.autoExpandAll option is true or the expandAll(groupIndex) method is called, group paging is performed on the client side.
Web API Service Demo Custom Service Demo
See Also
- Data Binding: Web API Service | PHP Service | MongoDB Service | Custom Sources
groupPaging
Specifies whether paging by groups should be performed on the server side.
Remote group paging allows you to load groups from a remote source in portions. This feature speeds up grouping because the DataGrid transmits less data. However, requests become more frequent because the DataGrid sends several requests each time a user expands a group or sorts/filters data.
Remote group paging has the following restrictions:
- Filtering, paging, grouping, and sorting should be performed on the server.
- All groups should be collapsed initially by setting the grouping.autoExpandAll option to false.
- The expandAll(groupIndex) method should not be called. Otherwise, the widget ignores remote group paging.
summary
Specifies whether or not summaries calculation must be performed on the server.
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