Add an EmptyAdapter #55
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Unlike the NullAdapter, this adapter is always empty instead of allowing it to paginate an array of null values. Thanks to that, its generic type can fullfil types like `AdapterInterface<Foo>` with a non-nullable `Foo` type.
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Thanks! Released in 4.4. |
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Unlike the NullAdapter, this adapter is always empty instead of allowing it to paginate an array of null values. Thanks to that, its generic type can fullfil types like
AdapterInterface<Foo>with a non-nullableFootype.See https://phpstan.org/r/ada3d136-11fa-43f2-a5dc-dd282f008b3e for the difference it makes for phpstan and https://psalm.dev/r/cb09185906 for Psalm.
This EmptyAdapter is mostly meant to be used for conditional returns, where another branch of the execution would return a different adapter implementation (for instance to skip executing a DB query entirely when you know that the parameters you deal with cannot produce any results because they would execute a query with
WHERE true = false).