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Internals

Hydrator Extract Tool

All hydrator extract operations are handled through the Hydrator Extract Tool. This tool is engineered to be overridden thanks to a service manager alias. Should you find the need to add custom caching to hydrator results this is where to do it. To register a custom hydrator extract tool use

'aliases' => [
    'ZF\Doctrine\GraphQL\Hydrator\HydratorExtractTool' => CustomExtractTool::class,
],

Field Resolver

This standard part of GraphQL resolves individual fields and is where the built in caching resides. This resolver uses the Hydrator Extract Tool and returns one field value at a time. For high performance writing your own Field Resolver is an option. To register a custom field resolver use GraphQL::setDefaultFieldResolver($fieldResolver);