/**
* Partially roll back the current transaction.
*
* @param savepoint the savepoint to which should be rolled back
* @param trimToSize if the list should be trimmed
*/
public void rollbackTo(Savepoint savepoint, boolean trimToSize) {
int index = savepoint == null ? 0 : savepoint.logIndex;
while (undoLog.size() > index) {
UndoLogRecord entry = undoLog.getLast();
entry.undo(this);
undoLog.removeLast(trimToSize);
}
if (transaction != null) {
long savepointId = savepoint == null ? 0 : savepoint.transactionSavepoint;
HashMap<String, MVTable> tableMap = database.getMvStore().getTables();
Iterator<Change> it = transaction.getChanges(savepointId);
while (it.hasNext()) {
Change c = it.next();
MVTable t = tableMap.get(c.mapName);
if (t != null) {
long key = ((ValueLong) c.key).getLong();
ValueArray value = (ValueArray) c.value;
short op;
Row row;
if (value == null) {
op = UndoLogRecord.INSERT;
row = t.getRow(this, key);
} else {
op = UndoLogRecord.DELETE;
row = new Row(value.getList(), Row.MEMORY_CALCULATE);
}
row.setKey(key);
UndoLogRecord log = new UndoLogRecord(t, op, row);
log.undo(this);
}
}
}
if (savepoints != null) {
String[] names = new String[savepoints.size()];
savepoints.keySet().toArray(names);
for (String name : names) {
Savepoint sp = savepoints.get(name);
int savepointIndex = sp.logIndex;
if (savepointIndex > index) {
savepoints.remove(name);
}
}
}
}
