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, ],
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);
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