public boolean visit()

in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java [94:242]
121 lines of code
56 McCabe index (conditional complexity)

    public boolean visit(MySqlSelectQueryBlock x) {
        final boolean bracket = x.isParenthesized();
        if (bracket) {
            print('(');
        }

        if ((!isParameterized()) && isPrettyFormat() && x.hasBeforeComment()) {
            printlnComments(x.getBeforeCommentsDirect());
        }

        String cachedSelectList = x.getCachedSelectList();

        if (cachedSelectList != null) {
            if (!isEnabled(VisitorFeature.OutputSkipSelectListCacheString)) {
                print0(cachedSelectList);
            }
        } else {
            print0(ucase ? "SELECT " : "select ");

            for (int i = 0, size = x.getHintsSize(); i < size; ++i) {
                SQLCommentHint hint = x.getHints().get(i);
                hint.accept(this);
                print(' ');
            }

            switch (x.getDistionOption()) {
                case SQLSetQuantifier.ALL:
                    print0(ucase ? "ALL " : "all ");
                    break;
                case SQLSetQuantifier.DISTINCT:
                    print0(ucase ? "DISTINCT " : "distinct ");
                    break;
                case SQLSetQuantifier.DISTINCTROW:
                    print0(ucase ? "DISTINCTROW " : "distinctrow ");
                    break;
                case SQLSetQuantifier.UNIQUE:
                    print0(ucase ? "UNIQUE " : "unique ");
                    break;
                default:
                    break;
            }

            if (x.isHignPriority()) {
                print0(ucase ? "HIGH_PRIORITY " : "high_priority ");
            }

            if (x.isStraightJoin()) {
                print0(ucase ? "STRAIGHT_JOIN " : "straight_join ");
            }

            if (x.isSmallResult()) {
                print0(ucase ? "SQL_SMALL_RESULT " : "sql_small_result ");
            }

            if (x.isBigResult()) {
                print0(ucase ? "SQL_BIG_RESULT " : "sql_big_result ");
            }

            if (x.isBufferResult()) {
                print0(ucase ? "SQL_BUFFER_RESULT " : "sql_buffer_result ");
            }

            if (x.getCache() != null) {
                if (x.getCache().booleanValue()) {
                    print0(ucase ? "SQL_CACHE " : "sql_cache ");
                } else {
                    print0(ucase ? "SQL_NO_CACHE " : "sql_no_cache ");
                }
            }

            if (x.isCalcFoundRows()) {
                print0(ucase ? "SQL_CALC_FOUND_ROWS " : "sql_calc_found_rows ");
            }

            printSelectList(x.getSelectList());

            SQLName forcePartition = x.getForcePartition();
            if (forcePartition != null) {
                println();
                print0(ucase ? "FORCE PARTITION " : "force partition ");
                printExpr(forcePartition, parameterized);
            }

            SQLExprTableSource into = x.getInto();
            if (into != null) {
                println();
                print0(ucase ? "INTO " : "into ");
                printTableSource(into);
            }
        }

        printFrom(x);

        printWhere(x);

        printHierarchical(x);

        printGroupBy(x);
        printWindow(x);
        printOrderBy(x);

        printLimit(x);

        SQLName procedureName = x.getProcedureName();
        if (procedureName != null) {
            print0(ucase ? " PROCEDURE " : " procedure ");
            procedureName.accept(this);
            if (!x.getProcedureArgumentList().isEmpty()) {
                print('(');
                printAndAccept(x.getProcedureArgumentList(), ", ");
                print(')');
            }
        }

        if (x.isForUpdate()) {
            println();
            print0(ucase ? "FOR UPDATE" : "for update");
            if (x.isNoWait()) {
                print0(ucase ? " NOWAIT" : " nowait");
            } else if (x.getWaitTime() != null) {
                print0(ucase ? " WAIT " : " wait ");
                x.getWaitTime().accept(this);
            }

            if (x.isSkipLocked()) {
                print0(ucase ? " SKIP LOCKED" : " skip locked");
            }
        }

        if (x.isForShare()) {
            println();
            print0(ucase ? "FOR SHARE" : "for share");
        }

        if (x.isLockInShareMode()) {
            println();
            print0(ucase ? "LOCK IN SHARE MODE" : "lock in share mode");
        }

        if ((!isParameterized()) && isPrettyFormat() && x.hasAfterComment()) {
            printAfterComments(x.getAfterCommentsDirect());
        }

        if (bracket) {
            print(')');
        }

        return false;
    }