Package org.allGraphQLCases.server
Interface DataFetchersDelegateCharacterEdge
- All Known Implementing Classes:
DataFetchersDelegateCharacterEdgeImpl
public interface DataFetchersDelegateCharacterEdge
This interface contains the fata fetchers that are delegated in the bean that the implementation has to provide, when
fetching fields for the CharacterEdge GraphQL type, as defined in the provided GraphQL schema. Please read the
wiki server page
for more information on this.
- Author:
- generated by graphql-java-generator
- See Also:
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Method Summary
Modifier and TypeMethodDescriptionnode
(graphql.schema.DataFetchingEnvironment dataFetchingEnvironment, SIP_CharacterEdge_SIS origin) This method loads the data for CharacterEdge.node.node
(graphql.schema.DataFetchingEnvironment dataFetchingEnvironment, org.dataloader.DataLoader<UUID, SIP_Character_SIS> dataLoader, SIP_CharacterEdge_SIS origin) This method loads the data for CharacterEdge.node.
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Method Details
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node
CompletableFuture<SIP_Character_SIS> node(graphql.schema.DataFetchingEnvironment dataFetchingEnvironment, org.dataloader.DataLoader<UUID, SIP_Character_SIS> dataLoader, SIP_CharacterEdge_SIS origin) This method loads the data for CharacterEdge.node.
For optimization, this method returns a CompletableFuture. This allows to use graphql-java java-dataloader to highly optimize the number of requests to the server.
The principle is this one: The data loader collects all the data to load, avoid to load several times the same data, and allows parallel execution of the queries, if multiple queries are to be run.
You can implements this method like this:- Parameters:
dataFetchingEnvironment
- The GraphQLDataFetchingEnvironment
. It gives you access to the full GraphQL context for this DataFetcherdataLoader
- TheDataLoader
allows to load several data in one query. It allows to solve the (n+1) queries issues, and greatly optimizes the response time.
You'll find more informations here: https://github.com/graphql-java/java-dataloaderorigin
- The object from which the field is fetch. In other word: the aim of this data fetcher is to fetch the node attribute of the origin, which is an instance of {InterfaceType {name:CharacterEdge, fields:{Field{name:node, type:Character, params:[]},Field{name:cursor, type:String!, params:[]}}, comments ""}. It depends on your data modle, but it typically contains the id to use in the query.- Throws:
NoSuchElementException
- This method may return aNoSuchElementException
exception. In this case, the exception is trapped by the calling method, and the return is consider as null. This allows to use theOptional.get()
method directly, without caring of whether or not there is a value. The generated code will take care of theNoSuchElementException
exception.
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node
SIP_Character_SIS node(graphql.schema.DataFetchingEnvironment dataFetchingEnvironment, SIP_CharacterEdge_SIS origin) This method loads the data for CharacterEdge.node.- Parameters:
dataFetchingEnvironment
- The GraphQLDataFetchingEnvironment
. It gives you access to the full GraphQL context for this DataFetcherorigin
- The object from which the field is fetch. In other word: the aim of this data fetcher is to fetch the node attribute of the origin, which is an instance of {InterfaceType {name:CharacterEdge, fields:{Field{name:node, type:Character, params:[]},Field{name:cursor, type:String!, params:[]}}, comments ""}. It depends on your data modle, but it typically contains the id to use in the query.- Throws:
NoSuchElementException
- This method may return aNoSuchElementException
exception. In this case, the exception is trapped by the calling method, and the return is consider as null. This allows to use theOptional.get()
method directly, without caring of whether or not there is a value. The generated code will take care of theNoSuchElementException
exception.
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