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Clarify handling of null handling within lists #317

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Merged
leebyron merged 2 commits into from
Jun 20, 2017
Merged

Clarify handling of null handling within lists #317

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Clarify handling of null handling within lists
TOTBWF Jun 5, 2017
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Wrap/modified
leebyron Jun 20, 2017
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5 changes: 5 additions & 0 deletions spec/Section 6 -- Execution.md
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Expand Up @@ -693,5 +693,10 @@ handled by the parent field. If the parent field may be {null} then it resolves
to {null}, otherwise if it is a `Non-Null` type, the field error is further
propagated to it's parent field.

If a `List` type wraps a `Non-Null` type, and one of the elements of that list
resolves to {null}, then the entire list must resolve to {null}.
If the `List` type is also wrapped in a `Non-Null`, the field error continues
to propagate upwards.

If all fields from the root of the request to the source of the error return
`Non-Null` types, then the {"data"} entry in the response should be {null}.