/**
* Update a list of rows in this table.
*
* @param prepared the prepared statement
* @param session the session
* @param rows a list of row pairs of the form old row, new row, old row, new row,...
*/
public void updateRows(Prepared prepared, Session session, RowList rows) {
// in case we need to undo the update
int rollback = session.getUndoLogPos();
// remove the old rows
int rowScanCount = 0;
for (rows.reset(); rows.hasNext(); ) {
if ((++rowScanCount & 127) == 0) {
prepared.checkCanceled();
}
Row o = rows.next();
rows.next();
removeRow(session, o);
session.log(this, UndoLogRecord.DELETE, o);
}
// add the new rows
for (rows.reset(); rows.hasNext(); ) {
if ((++rowScanCount & 127) == 0) {
prepared.checkCanceled();
}
rows.next();
Row n = rows.next();
try {
addRow(session, n);
} catch (DbException e) {
if (e.getErrorCode() == ErrorCode.CONCURRENT_UPDATE_1) {
session.rollbackTo(rollback, false);
}
throw e;
}
session.log(this, UndoLogRecord.INSERT, n);
}
}
