Package com.alibaba.druid.wall.spi.WallVisitorUtils

Examples of com.alibaba.druid.wall.spi.WallVisitorUtils.WallConditionContext

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        return false;
    }

    public static boolean visit(SQLEvalVisitor visitor, SQLUnaryExpr x) {
        final WallConditionContext wallConditionContext = WallVisitorUtils.getWallConditionContext();
        if (x.getOperator() == SQLUnaryOperator.Compl && wallConditionContext != null) {
            wallConditionContext.setBitwise(true);
        }

        return false;
    }
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        // final WallConditionContext old = wallConditionContextLocal.get();

        left.accept(visitor);
        right.accept(visitor);

        final WallConditionContext wallConditionContext = WallVisitorUtils.getWallConditionContext();
        if (x.getOperator() == SQLBinaryOperator.BooleanOr) {
            if (wallConditionContext != null) {
                if (left.getAttribute(EVAL_VALUE) == Boolean.TRUE || right.getAttribute(EVAL_VALUE) == Boolean.TRUE) {
                    wallConditionContext.setPartAlwayTrue(true);
                }
            }
        } else if (x.getOperator() == SQLBinaryOperator.BooleanXor) {
            if (wallConditionContext != null) {
                wallConditionContext.setXor(true);
            }
        } else if (x.getOperator() == SQLBinaryOperator.BitwiseAnd //
                   || x.getOperator() == SQLBinaryOperator.BitwiseNot //
                   || x.getOperator() == SQLBinaryOperator.BitwiseOr //
                   || x.getOperator() == SQLBinaryOperator.BitwiseXor) {
            if (wallConditionContext != null) {
                wallConditionContext.setBitwise(true);
            }
        }

        Object leftValue = left.getAttribute(EVAL_VALUE);
        Object rightValue = right.getAttributes().get(EVAL_VALUE);

        if (x.getOperator() == SQLBinaryOperator.Like) {
            if (isAlwayTrueLikePattern(x.getRight())) {
                x.putAttribute(EVAL_VALUE, Boolean.TRUE);
                return false;
            }
        }

        if (x.getOperator() == SQLBinaryOperator.NotLike) {
            if (isAlwayTrueLikePattern(x)) {
                x.putAttribute(EVAL_VALUE, Boolean.FALSE);
                return false;
            }
        }

        boolean leftHasValue = left.getAttributes().containsKey(EVAL_VALUE);
        boolean rightHasValue = right.getAttributes().containsKey(EVAL_VALUE);

        if ((!leftHasValue) && !rightHasValue) {
            SQLExpr leftEvalExpr = (SQLExpr) left.getAttribute(EVAL_EXPR);
            SQLExpr rightEvalExpr = (SQLExpr) right.getAttribute(EVAL_EXPR);

            if (leftEvalExpr != null && leftEvalExpr.equals(rightEvalExpr)) {
                switch (x.getOperator()) {
                    case Like:
                    case Equality:
                    case GreaterThanOrEqual:
                    case LessThanOrEqual:
                    case NotLessThan:
                    case NotGreaterThan:
                        x.putAttribute(EVAL_VALUE, Boolean.TRUE);
                        return false;
                    case NotEqual:
                    case NotLike:
                    case GreaterThan:
                    case LessThan:
                        x.putAttribute(EVAL_VALUE, Boolean.FALSE);
                        return false;
                    default:
                        break;
                }
            }
        }

        if (!leftHasValue) {
            return false;
        }

        if (!rightHasValue) {
            return false;
        }

        if (wallConditionContext != null) {
            wallConditionContext.setConstArithmetic(true);
        }

        Object value = null;
        switch (x.getOperator()) {
            case Add:
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        left.accept(visitor);
        right.accept(visitor);

        if (x.getOperator() == SQLBinaryOperator.BooleanOr) {
            final WallConditionContext wallContext = WallVisitorUtils.getWallConditionContext();
            if (wallContext != null) {
                if (left.getAttribute(EVAL_VALUE) == Boolean.TRUE || right.getAttribute(EVAL_VALUE) == Boolean.TRUE) {
                    wallContext.setPartAllowTrue(true);
                }
            }
        }

        if (!left.getAttributes().containsKey(EVAL_VALUE)) {
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Related Classes of com.alibaba.druid.wall.spi.WallVisitorUtils.WallConditionContext

  • com.alibaba.druid.sql.visitor.SQLEvalVisitorUtils
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