Class DataLoaderMethodArgumentResolver
java.lang.Object
org.springframework.graphql.data.method.annotation.support.DataLoaderMethodArgumentResolver
- All Implemented Interfaces:
HandlerMethodArgumentResolver
public class DataLoaderMethodArgumentResolver
extends Object
implements HandlerMethodArgumentResolver
Resolver for a
DataLoader
obtained via
DataFetchingEnvironment.getDataLoader(String)
.
The DataLoader
key is based on one of the following:
- The full name of the value type from the DataLoader generic types.
- The method parameter name.
- Since:
- 1.0.0
- Author:
- Rossen Stoyanchev
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Constructor Summary
-
Method Summary
Modifier and TypeMethodDescriptionresolveArgument
(MethodParameter parameter, DataFetchingEnvironment environment) Resolve a method parameter to a value.boolean
supportsParameter
(MethodParameter parameter) Whether this resolver supports the givenMethodParameter
.
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Constructor Details
-
DataLoaderMethodArgumentResolver
public DataLoaderMethodArgumentResolver()
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Method Details
-
supportsParameter
Description copied from interface:HandlerMethodArgumentResolver
Whether this resolver supports the givenMethodParameter
.- Specified by:
supportsParameter
in interfaceHandlerMethodArgumentResolver
-
resolveArgument
Description copied from interface:HandlerMethodArgumentResolver
Resolve a method parameter to a value.- Specified by:
resolveArgument
in interfaceHandlerMethodArgumentResolver
- Parameters:
parameter
- the method parameter to resolve. This parameter must have previously checked viaHandlerMethodArgumentResolver.supportsParameter(org.springframework.core.MethodParameter)
.environment
- the environment to use to resolve the value- Returns:
- the resolved value, which may be
null
if not resolved; the value may also be aMono
if it requires asynchronous resolution.
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