}
public int update() {
tableFilter.startQuery(session);
tableFilter.reset();
Table table = tableFilter.getTable();
session.getUser().checkRight(table, Right.DELETE);
table.fire(session, Trigger.DELETE, true);
table.lock(session, true, false);
RowList rows = new RowList(session);
int limitRows = -1;
if (limitExpr != null) {
Value v = limitExpr.getValue(session);
if (v != ValueNull.INSTANCE) {
limitRows = v.getInt();
}
}
try {
setCurrentRowNumber(0);
while (limitRows != 0 && tableFilter.next()) {
setCurrentRowNumber(rows.size() + 1);
if (condition == null || Boolean.TRUE.equals(condition.getBooleanValue(session))) {
Row row = tableFilter.get();
boolean done = false;
if (table.fireRow()) {
done = table.fireBeforeRow(session, row, null);
}
if (!done) {
rows.add(row);
if (limitRows >= 0 && rows.size() >= limitRows) {
break;
}
}
}
}
int rowScanCount = 0;
for (rows.reset(); rows.hasNext();) {
if ((++rowScanCount & 127) == 0) {
checkCanceled();
}
Row row = rows.next();
table.removeRow(session, row);
session.log(table, UndoLogRecord.DELETE, row);
}
if (table.fireRow()) {
int count = 0;
for (rows.reset(); rows.hasNext();) {
Row row = rows.next();
table.fireAfterRow(session, row, null, false);
count++;
}
}
table.fire(session, Trigger.DELETE, false);
return rows.size();
} finally {
rows.close();
}
}