Spec edits for @defer/@stream #742

@stream

Update Section 3 -- Type System.md Update Section 3 -- Type System.md Update Section 3 -- Type System.md Update Section 6 -- Execution.md Update Section 6 -- Execution.md Update Section 6 -- Execution.md Update Section 6 -- Execution.md Update Section 6 -- Execution.md Update Section 6 -- Execution.md Update Section 6 -- Execution.md Update Section 6 -- Execution.md Update Section 6 -- Execution.md Amend changes change initial_count to initialCount add payload fields to Response section add stream validation for overlapping fields spelling updates add note about re-execution add note about final payloads label is optional fix build Update ExecuteQuery with hasNext logic fix spelling fix spaces Update execution to add defer/stream to mutations and subscriptions clarify stream records Apply suggestions from code review Co-authored-by: Benjie Gillam <[email protected]> missing bracket Update spec/Section 7 -- Response.md Co-authored-by: Benjie Gillam <[email protected]> clarify line about stream record iterator update visitedFragments with defer Updates to consolidate subsequent payload logic for queries, mutations, and subscriptions Apply suggestions from code review Co-authored-by: Benjie Gillam <[email protected]> address review feedback Add handling of termination signal more formatting fix spelling Add assertion for record type add "Stream Directives Are Used On List Fields" validation rule Add defaultValue to @stream initialCount Update spec/Section 5 -- Validation.md Co-authored-by: Benjie Gillam <[email protected]> # Conflicts: # spec/Section 3 -- Type System.md # spec/Section 5 -- Validation.md # spec/Section 6 -- Execution.md # spec/Section 7 -- Response.md

# Conflicts: # spec/Section 6 -- Execution.md

# Conflicts: # spec/Section 3 -- Type System.md

# Conflicts: # spec/Section 7 -- Response.md

# Conflicts: # spec/Section 3 -- Type System.md # spec/Section 6 -- Execution.md

# Conflicts: # spec/Section 7 -- Response.md

# Conflicts: # spec/Section 6 -- Execution.md

…ators # Conflicts: # spec/Section 6 -- Execution.md

…rays

* add comma * remove unused parameter

* streamline stream execution Currently, these spec changes introduce a new internal function named `ResolveFieldGenerator` that is suggested parallels `ResolveFieldValue`. This function is used during field execution such that if the stream directive is specified, it is called instead of `ResolveFieldValue`. The reference implementation, however, does not require any such function, simply utilizing the result of `ResolveFieldValue`. With incremental delivery, collections completed by `CompleteValue` should be explicitly iterated using a well-defined iterator, such that the iterator can be passed to `ExecuteStreamField`. But this does not require a new internal function to be specified/exposed. Moreover, introducing this function causes a mixing of concerns between the `ExecuteField` and `CompleteValue` algorithms; Currently, if stream is specified for a field, `ExecuteField` extracts the iterator and passes it to `CompleteValue`, while if stream is not specified, the `ExecuteField` passes the collection, i.e. the iterable, not the iterator. In the stream case, this shunts some of the logic checking the validity of resolution results into field execution. In fact, it exposes a specification "bug" => in the stream case, no checking is actually done that `ResolveFieldGenerator` returns an iterator! This change removes `ResolveFieldGenerator` and with it some complexity, and brings it in line with the reference implementation. The reference implementation contains some simplification of the algorithm for the synchronous iterator case (we don't have to preserve the iterator on the StreamRecord, because there will be no early close required and we don't have to set isCompletedIterator, beacuse we don't have to create a dummy payload for termination of the asynchronous stream), We could consider also removing these bits as well, as they are an implementation detail in terms of how our dispatcher is managing its iterators, but that should be left for another change. * run prettier

* fix whitespace * complete renaming of initialItems

* Add error handling for stream iterators * also add iterator error handling within CompleteValue * incorporate feedback

…xecution

Co-authored-by: Simon Gellis <[email protected]>

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Spec edits for @defer/@stream #742

Spec edits for @defer/@stream #742

Commits on Aug 31, 2023