Method TDDLHint

core/src/main/java/com/alibaba/druid/sql/ast/TDDLHint.java:24–271

(String text)

    }

    public TDDLHint(String text) {
        super(text);

        MySqlExprParser hintParser = new MySqlExprParser(text, SQLParserFeature.TDDLHint);
        Lexer lexer = hintParser.getLexer();
        if (lexer.token() == Token.PLUS || lexer.token() == Token.BANG) {
            lexer.nextToken();
        }

        if (!lexer.identifierEquals(FnvHash.Constants.TDDL)) {
            // error tddl hint
            return;
        }

        lexer.nextToken();

        switch (lexer.token()) {
            case COLON:
                lexer.nextToken();
                break;
            case LPAREN:
                int rp = text.lastIndexOf(')');
                if (rp != -1) {
                    json = text.substring(lexer.pos(), rp);
                    type = Type.JSON;
                }
                return;
            default:
                return;
        }

        for (; ; ) {
            if (lexer.token() == Token.AND) {
                lexer.nextToken();
            }

            String name = lexer.stringVal();
            long hash = lexer.hashLCase();

            if (lexer.identifierEquals(FnvHash.Constants.NODE)) {
                lexer.nextToken();
                if (lexer.token() == Token.IN) {
                    lexer.nextToken();
                    name = "NODE_IN";
                } else if (lexer.token() == Token.EQ) {
                    lexer.nextToken();
                    name = "NODE_IN";
                    SQLExpr value = hintParser.primary();
                    Function function = new Function(name);
                    Argument argument = new Argument(null, value);
                    function.getArguments().add(argument);
                    functions.add(function);

                    if (lexer.token() == Token.EOF) {
                        break;
                    }

                    continue;