forked from https://github.com/symfony/symfony
cc7d1264c8
This PR was squashed before being merged into the 4.4 branch.
Discussion
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[FrameworkBundle] Dont store cache misses on warmup
| Q | A
| ------------- | ---
| Branch? | 4.4
| Bug fix? | yes
| New feature? | no
| Deprecations? | no
| Tickets | Fix #38694
| License | MIT
| Doc PR | symfony/symfony-docs#15172
When we are warming the annotation cache, we are reading all annotation into an `ArrayAdapter`. When we are done we move the values to a `PhpArrayAdapter` to store them in a file.
@Seldaek [found out](https://github.com/symfony/symfony/issues/38694#issuecomment-810501066) that when you are using a custom constraint with a `Symfony\Component\Validator\Constraints\Callback`, there is a strange error like:
> Can use "yield from" only with arrays and Traversables
That is because the `Closure` in the `Symfony\Component\Validator\Constraints\Callback` cannot be serialised and saved to cache. But since the `ArrayAdapter` is also [storing misses as null](https://github.com/symfony/symfony/pull/35362), the null values are understood as real values.
When all values are moved to the `PhpArrayAdapter` and we ask the cache for a value (via Doctrine's `CacheProvider`), it will return `null` as a value instead of `false` as a cache miss. And `null` is not something one could "yield from".
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CONTRIBUTING.md | ||
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LICENSE | ||
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phpunit | ||
phpunit.xml.dist | ||
psalm.xml | ||
README.md | ||
UPGRADE-4.0.md | ||
UPGRADE-4.1.md | ||
UPGRADE-4.2.md | ||
UPGRADE-4.3.md | ||
UPGRADE-4.4.md | ||
UPGRADE-5.0.md |
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