Class SourceMethodArgumentResolver
java.lang.Object
org.springframework.graphql.data.method.annotation.support.SourceMethodArgumentResolver
- All Implemented Interfaces:
HandlerMethodArgumentResolver
Resolver for the source/parent of a field, obtained via
DataFetchingEnvironment.getSource()
.
This resolver supports any type excluding enums, dates, arrays, wide range of types, including any non-simple type, along with any CharSequence, or Number. Hence, it must come last in the order or resolvers, as a fallback after all others.
- Since:
- 1.0.0
- Author:
- Rossen Stoyanchev
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Constructor Summary
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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
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SourceMethodArgumentResolver
public SourceMethodArgumentResolver()
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Method Details
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supportsParameter
Description copied from interface:HandlerMethodArgumentResolver
Whether this resolver supports the givenMethodParameter
.- Specified by:
supportsParameter
in interfaceHandlerMethodArgumentResolver
- Parameters:
parameter
- the method parameter to check for support
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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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