Method handleDeleteStatement

src/java/simpledb/Parser.java:393–424

(ZDelete s, TransactionId tid)

    }

    public Query handleDeleteStatement(ZDelete s, TransactionId tid)
            throws
            simpledb.ParsingException, IOException, ParseException {
        int id;
        try {
            id = Database.getCatalog().getTableId(s.getTable()); // will fall
                                                                 // through if
                                                                 // table
                                                                 // doesn't
                                                                 // exist
        } catch (NoSuchElementException e) {
            throw new simpledb.ParsingException("Unknown table : "
                    + s.getTable());
        }
        String name = s.getTable();
        Query sdbq = new Query(tid);

        LogicalPlan lp = new LogicalPlan();
        lp.setQuery(s.toString());

        lp.addScan(id, name);
        if (s.getWhere() != null)
            processExpression(tid, (ZExpression) s.getWhere(), lp);
        lp.addProjectField("null.*", null);

        OpIterator op = new Delete(tid, lp.physicalPlan(tid,
                TableStats.getStatsMap(), false));
        sdbq.setPhysicalPlan(op);

        return sdbq;

    }

    public void handleTransactStatement(ZTransactStmt s)
            throws IOException,