Examples with Modifier com.alibaba.cobar.parser.ast.expression.primary.MatchExpression.Modifier used on opensource projects

Example 1 with Modifier

use of com.alibaba.cobar.parser.ast.expression.primary.MatchExpression.Modifier in project cobar by alibaba.

the class MySQLExprParser method matchExpression.

/**
 * first <code>MATCH</code> has been consumed
 */
private Expression matchExpression() throws SQLSyntaxErrorException {
    match(PUNC_LEFT_PAREN);
    List<Expression> colList = expressionList(new LinkedList<Expression>());
    matchIdentifier("AGAINST");
    match(PUNC_LEFT_PAREN);
    Expression pattern = expression();
    Modifier modifier = Modifier._DEFAULT;
    switch(lexer.token()) {
        case KW_WITH:
            lexer.nextToken();
            match(IDENTIFIER);
            match(IDENTIFIER);
            modifier = Modifier.WITH_QUERY_EXPANSION;
            break;
        case KW_IN:
            switch(lexer.nextToken()) {
                case KW_NATURAL:
                    lexer.nextToken();
                    matchIdentifier("LANGUAGE");
                    matchIdentifier("MODE");
                    if (lexer.token() == KW_WITH) {
                        lexer.nextToken();
                        lexer.nextToken();
                        lexer.nextToken();
                        modifier = Modifier.IN_NATURAL_LANGUAGE_MODE_WITH_QUERY_EXPANSION;
                    } else {
                        modifier = Modifier.IN_NATURAL_LANGUAGE_MODE;
                    }
                    break;
                default:
                    matchIdentifier("BOOLEAN");
                    matchIdentifier("MODE");
                    modifier = Modifier.IN_BOOLEAN_MODE;
                    break;
            }
    }
    match(PUNC_RIGHT_PAREN);
    return new MatchExpression(colList, pattern, modifier).setCacheEvalRst(cacheEvalRst);
}