![]() The comparator records how many times it is called. The 'Distro' column is sorted with a custom comparator. The example is best viewed with the dev console open so log messages can be observed. The example below demonstrates Changed Path Selection. The groups that were impacted include each group with data that was changed, as well as all parents of changed groups all the way up to the top level. After the grid applies all adds, removes and updates from a transaction, it works out what groups were impacted and only executes the required operations on those groups. All of the other 9 groups do not need to have their sorting re-applied.ĭeciding what groups need to be operated on within the grid is called Changed Path Selection. If a transaction is applied to update one row, then the group that row sits within will be re-sorted as well as the top level group (as aggregations could impact values at the top level). When you apply a transaction to grouped data, the grid will only re-apply grouping, filtering and sorting to the impacted data.įor example, suppose you have the grid with its rows grouped into 10 groups and a sort is applied on one column. ![]() Get Row Data: Prints all row data to the console.When moving items, the grid animates the rows to the new location with minimal DOM updates.Move to Sold: Move selected items to 'Sold' group.Move to In Workshop: Move selected items to 'In Workshop' group.Move to For Sale: Move selected items to 'For Sale' group.Remove Selected: Removes all selected items.Add In Workshop: Adds a new item to 'In Workshop' group.Add For Sale: Adds a new item to 'For Sale' group.The example below demonstrates the following: When using transactions and grouping, the groups are kept intact as you add, remove and update rows. Example: Updating with Transaction and Groups Using object references for identification will be slow for large data sets, as the grid has no way of indexing rows based on object reference.Īlthough using object references is slower, this will only be an issue if working with large datasets (thousands of rows). Using another instance of the same object will stop the grid from making the comparison. The same instance of the row data items should be used. When using object references, note the following: In other words when you provide a transaction with update or remove items, the grid will find those rows using the = operator on the data that you previously provided. If you do not provide Row IDs for the rows, the grid will compare rows using object references. ![]()
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