Registers a callback method to be invoked whenever a row is updated, inserted, or deleted.
| Arguments: |
The arguments are:
| callBackObj [required] |
An instantiated object with a method that will be invoked whenever a row is updated, inserted, or deleted.
However, this argument can also be .nil to indicate that any installed update hook is to be removed.
|
| mthName [optional] |
The method name that will be invoked during a call back. By default, the method invoked will beupdateHookCallBack(). However, the user can specify an alternative method if desired. This
argument is ignored when thecallbackObjargument is .nil.
|
| userData [optional] |
This can be any Rexx object the user desires. The object will be sent as the last argument to the update hook
callback method when it is invoked. This argument is ignored when the callbackObj argument is .nil.
|
|
| Return value: |
TheuserDataargument to a previous invocation of theupdateHookmethod on this database connection, or .nil if there has not been a previous
invocation or theuserDataargument was not used on the previous invocation.
|
| Details: |
The functionality of theupdateHookmethod is similar to that of the SQLite
sqlite3_update_hook API.
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