Creation order enumeration and other changes#159
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Enumerate child subtrees before separator records so B-tree v2 records are yielded in sorted order for internal nodes. This keeps dense name-index iteration correct today and provides the traversal behavior needed for creation-order index iteration.
Return native group children in link creation order when the file tracks that order, covering both compact and dense group storage. Add efficient child counting without dereferencing children and cover the behavior with dense and compact group tests.
Stream dense link and attribute B-tree records instead of materializing the full record set before reading heap messages. Avoid per-node record list allocations during B-tree traversal, and cache the huge-object B-tree header so huge fractal heap objects can be found with targeted lookup instead of full enumeration.
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Hi @Apollo3zehn in our tool we need to iterate lazily through children in creation order. I tasked AI with implementing this and the results (with some tidy up by myself) are in this PR.
It appears to be working well for us, but I haven't thoroughly tested it yet.
Let me know if you're interested in some, or all, of these commits and I'll tidy it up a bit more (if needed).