Re: [DISCUSS] Does anybody think this is debuging unfriendly: "call.transformTo(relBuilder.build())"

[Vladimir Sitnikov]

Stamatis>I think you can add a watch expression on RelBuilder#peek[1]
method and

Good luck with EnumerableBatchNestedLoopJoinRule :-)

    call.transformTo(
        EnumerableBatchNestedLoopJoin.create(
            convert(join.getLeft(), join.getLeft().getTraitSet()
                .replace(EnumerableConvention.INSTANCE)),
            convert(right, right.getTraitSet()
                .replace(EnumerableConvention.INSTANCE)),
            join.getCondition(),
            requiredColumns.build(),
            correlationIds,
            join.getJoinType()));

What I also do is I use conditional breakpoints:
a) Add a breakpoint to RelOptRuleCall#transformTo, and add a condition to
confine the rule or the relation (e.g. when I know its ID)
b) Add if (...) { "break".hashCode(); }  and put a breakpoint inside. That
works much faster than a conditional breakpoint for hot code.


Vladimir