[SQL] Support transforming TreeNodes with Option children.

[concretevitamin]

Thanks goes to @marmbrus for his implementation.

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[marmbrus]

This test is failing because you made the TreeNode an inner class. An inner class is actually just syntactic sugar done by the compiler where there is an extra implicit constructor parameter to the class for the outer object. As a result, the contract that all of the argument to the TreeNode's constructor are either in productIterator or otherCopyArgs is broken.

Here's a fix: concretevitamin#1

[concretevitamin]

Ah, this is tricky. Good to know and thanks for the fix.

On Friday, June 13, 2014, Michael Armbrust notifications@github.com wrote:

This test is failing because you made the TreeNode an inner class. An
inner class is actually just syntactic sugar done by the compiler where
there is an extra implicit constructor parameter to the class for the outer
object. As a result, the contract that all of the argument to the TreeNode's
constructor are either in productIterator or otherCopyArgs is broken.

Here's a fix: concretevitamin#1
concretevitamin#1

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