Deleting DataView items

Apama 10.15.0 | Developing Apama Applications | Developing Apama Applications in EPL | Making Application Data Available to Clients | Deleting DataView items

Use the following event types to delete DataView items.

DataViewDeleteItem

Create and route an event of this type to delete a DataView item. A response is provided by a DataViewItemDeleted, DataViewException or DataViewItemException event.

Here is an example that creates and routes a DataViewDeleteItem event and handles the DataViewItemDeleted response by logging the deletion of the item:

using com.apama.dataview.DataViewDeleteItem;
using com.apama.dataview.DataViewItemDeleted;
string location;
...
DataViewDeleteItem delete := new DataViewDeleteItem;
delete.dvName := "Weather";
delete.dvItemId := -1; // Set the ID to -1 when using keyFields
delete.keyFields := [location];
route delete;
on DataViewItemDeleted (dvName="Weather") as deleted {
log("Weather monitor - DataViewItemDeleted:
"+deleted.dvItemId.toString());
}

DataViewItemDeleted

These events are responses to DataViewDeleteItem events. They indicate the successful deletion of a DataView item.

DataViewDeleteAllItems

Create and route an event of this type to delete all DataView items associated with a specified DataView definition. A response is provided by a DataViewAllItemsDeleted, DataViewException or DataViewItemException event.

DataViewAllItemsDeleted

These events are responses to DataViewDeleteAllItem events. They indicate the successful deletion of all items associated with a given DataView definition.