| Modifier and Type | Field and Description |
|---|---|
| private RAMAccessManager | access_factory
Fields of the class |
| Access | Constructor and Description |
|---|---|
| public |
| Modifier and Type | Method and Description |
|---|---|
| public void | insertUndoNotify(Transaction
transaction that is being backed out. xact, PageKey key that uniquely identifies page in question, container
key information is embedded in the PageKey page_key)Implements org. Interface to be called when an undo of an insert is processed. |
| access_factory | back to summary |
|---|---|
| private RAMAccessManager access_factory Fields of the class | |
| RAMAccessUndoHandler | back to summary |
|---|---|
| public RAMAccessUndoHandler(RAMAccessManager input_access_factory) Constructors for This class: | |
| insertUndoNotify | back to summary |
|---|---|
| public void insertUndoNotify(Transaction xact, PageKey page_key) throws StandardException Implements org. Interface to be called when an undo of an insert is processed. Implementer of this class provides interface to be called by the raw store when an undo of an insert is processed. Initial implementation will be by Access layer to queue space reclaiming events if necessary when a rows is logically "deleted" as part of undo of the original insert. This undo can happen a lot for many applications if they generate expected and handled duplicate key errors. It may be useful at some time to include the recordId of the deleted row, but it is not used currently by those notified. The post commit work ultimately processes all rows on the table while it has the latch which is more efficient than one row at time per latch. It is expected that notifies only happen for pages that caller is interested in. Currently only the following aborted inserts cause a notify: o must be on a non overflow page o if all "user" rows on page are deleted a notify happens (page 1 has a system row so on page one notifies happen if all but the first row is deleted). o if the aborted insert row has either an overflow row or column component then the notify is executed.
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