Examples with Expression com.alibaba.cobar.parser.ast.expression.Expression used on opensource projects

Example 86 with Expression

use of com.alibaba.cobar.parser.ast.expression.Expression in project cobar by alibaba.

the class MySQLExprParser method bitOrExpression.

/**
     * @param consumed not null means that a token that has been pre-consumed
     *            stands for next token
     */
private Expression bitOrExpression(String consumed, String consumedUp) throws SQLSyntaxErrorException {
    for (Expression expr = bitAndExpression(consumed, consumedUp); ; ) {
        switch(lexer.token()) {
            case OP_VERTICAL_BAR:
                lexer.nextToken();
                Expression newExpr = bitAndExpression(null, null);
                expr = new BitOrExpression(expr, newExpr).setCacheEvalRst(cacheEvalRst);
                break;
            default:
                return expr;
        }
    }
}

Example 87 with Expression

use of com.alibaba.cobar.parser.ast.expression.Expression in project cobar by alibaba.

the class MySQLExprParser method rightOprandOfIn.

/**
     * @return {@link QueryExpression} or {@link InExpressionList}
     */
private Expression rightOprandOfIn() throws SQLSyntaxErrorException {
    match(PUNC_LEFT_PAREN);
    if (KW_SELECT == lexer.token()) {
        QueryExpression subq = subQuery();
        match(PUNC_RIGHT_PAREN);
        return subq;
    }
    return new InExpressionList(expressionList(new LinkedList<Expression>())).setCacheEvalRst(cacheEvalRst);
}

Example 88 with Expression

use of com.alibaba.cobar.parser.ast.expression.Expression in project cobar by alibaba.

the class MySQLExprParser method logicalXORExpression.

/**
     * <code>higherPRJExpr ( 'XOR' higherPRJExpr )*</code>
     * 
     * @throws SQLSyntaxErrorException
     */
private Expression logicalXORExpression() throws SQLSyntaxErrorException {
    for (Expression expr = logicalAndExpression(); ; ) {
        switch(lexer.token()) {
            case KW_XOR:
                lexer.nextToken();
                Expression newExpr = logicalAndExpression();
                expr = new LogicalXORExpression(expr, newExpr).setCacheEvalRst(cacheEvalRst);
                break;
            default:
                return expr;
        }
    }
}

Example 89 with Expression

use of com.alibaba.cobar.parser.ast.expression.Expression in project cobar by alibaba.

the class MySQLExprParser method timestampdiff.

/**
     * first '(' has been consumed
     */
private Timestampdiff timestampdiff() throws SQLSyntaxErrorException {
    IntervalPrimary.Unit unit = intervalPrimaryUnit();
    match(PUNC_COMMA);
    Expression interval = expression();
    match(PUNC_COMMA);
    Expression expr = expression();
    match(PUNC_RIGHT_PAREN);
    List<Expression> argument = new ArrayList<Expression>(2);
    argument.add(interval);
    argument.add(expr);
    Timestampdiff func = new Timestampdiff(unit, argument);
    func.setCacheEvalRst(cacheEvalRst);
    return func;
}

Example 90 with Expression

use of com.alibaba.cobar.parser.ast.expression.Expression in project cobar by alibaba.

the class MySQLOutputASTVisitor method visit.

@Override
public void visit(CollateExpression node) {
    Expression string = node.getString();
    boolean paren = string.getPrecedence() < node.getPrecedence();
    if (paren)
        appendable.append('(');
    string.accept(this);
    if (paren)
        appendable.append(')');
    appendable.append(" COLLATE ").append(node.getCollateName());
}