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Preserve sources of variable values #3811

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merged 4 commits into from
Sep 29, 2024

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@yaacovCR yaacovCR commented Dec 31, 2022

#3077 rebased on main.

Depends on #3810

@leebyron comments from original PR:

By way of introducing type VariableValues, allows getVariableValues to return both the coerced values as well as the original sources, which are then made available in ExecutionContext.

While variable sources are not used directly here, they're used directly in #3065. This PR is pulled out as a pre-req to aid review

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I guess this should technically be a BREAKING CHANGE as the signature changes for getVariableValues and that is now exported.

@yaacovCR yaacovCR added PR: breaking change 💥 implementation requires increase of "major" version number and removed PR: internal 🏠 labels Jan 12, 2023
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leebyron and others added 4 commits September 29, 2024 00:14
By way of introducing type `VariableValues`, allows `getVariableValues` to return both the coerced values as well as the original sources, which are then made available in `ExecutionContext`.
breaking change, have to do it in v17 or would have to wait until v18
@yaacovCR yaacovCR force-pushed the variable-value-sources-rebased branch from 958681c to c3e220d Compare September 28, 2024 21:14
@yaacovCR yaacovCR merged commit 7dd825e into graphql:main Sep 29, 2024
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@yaacovCR yaacovCR deleted the variable-value-sources-rebased branch September 29, 2024 10:15
yaacovCR added a commit that referenced this pull request Sep 29, 2024
[#3065 rebased on
main](#3065).

Depends on #3811

@leebyron comments from original PR:

> **Provides the "Value to Literal" methods in this [data flow
chart](https://user-images.githubusercontent.com/50130/118379946-51ac5300-b593-11eb-839f-c483ecfbc875.png).**
> 
> * Adds `valueToLiteral()` which takes an external input value and
translates it to a literal, allowing for custom scalars to define this
behavior.
> 
> **This also adds important changes to Input Coercion, especially for
custom scalars:**
> 
> * The value provided to `parseLiteral` is now `ConstValueNode` and the
second `variables` argument has been removed. For all built-in scalars
this has no effect, but any custom scalars which use complex literals no
longer need to do variable reconciliation manually (in fact most do not
-- this has been an easy subtle bug to miss).
>   This behavior is possible with the addition of `replaceVariables`

Changes to the original:
1. Instead of changing the signature of `parseLiteral()`, a new method
`parseConstLiteral()` has been added with the simpler signature.
`parseLiteral()` has been marked for deprecation.
2. `replaceVariables()` has access to operation and fragment variables.

Co-authored-by: Lee Byron <[email protected]>
yaacovCR added a commit that referenced this pull request Oct 27, 2024
[#3049 rebased on
main](#3049).

This is the last rebased PR from the original PR stack concluding with
#3049.

* Rebased: #3809 [Original: #3092]
* Rebased: #3810 [Original: #3074]
* Rebased: #3811 [Original: #3077]
* Rebased: #3812 [Original: #3065]
* Rebased: #3813 [Original: #3086]
* Rebased: #3814 (this PR) [Original: #3049]

Update: #3044 and #3145 have been separated from this stack.

Changes from original PR:
1. `astFromValue()` is deprecated instead of being removed.

@leebyron comments from #3049, the original PR:
> Implements
[graphql/graphql-spec#793](graphql/graphql-spec#793)
> 
> * BREAKING: Changes default values from being represented as an
assumed-coerced "internal input value" to a pre-coerced "external input
value" (See chart below).
> This allows programmatically provided default values to be represented
in the same domain as values sent to the service via variable values,
and allows it to have well defined methods for both transforming into a
printed GraphQL literal string for introspection / schema printing (via
`valueToLiteral()`) or coercing into an "internal input value" for use
at runtime (via `coerceInputValue()`)
> To support this change in value type, this PR adds two related
behavioral changes:
>   
> * Adds coercion of default values from external to internal at runtime
(within `coerceInputValue()`)
> * Removes `astFromValue()`, replacing it with `valueToLiteral()` for
use in introspection and schema printing. `astFromValue()` performed
unsafe "uncoercion" to convert an "Internal input value" directly to a
"GraphQL Literal AST", where `valueToLiteral()` performs a well defined
transform from "External input value" to "GraphQL Literal AST".
> * Adds validation of default values during schema validation.
> Since assumed-coerced "internal" values may not pass "external"
validation (for example, Enum values), an additional validation error
has been included which attempts to detect this case and report a
strategy for resolution.
> 
> Here's a broad overview of the intended end state:
> 
> ![GraphQL Value
Flow](https://user-images.githubusercontent.com/50130/118379946-51ac5300-b593-11eb-839f-c483ecfbc875.png)

---------

Co-authored-by: Lee Byron <[email protected]>
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