Class DataFetchersDelegateCharacterEdgeImpl

java.lang.Object
org.allGraphQLCases.server.impl.relayConnection.DataFetchersDelegateCharacterEdgeImpl
All Implemented Interfaces:
DataFetchersDelegateCharacterEdge

@Component
public class DataFetchersDelegateCharacterEdgeImpl
extends Object
implements DataFetchersDelegateCharacterEdge
  • Constructor Details

  • Method Details

    • node

      public Character node​(graphql.schema.DataFetchingEnvironment dataFetchingEnvironment, CharacterEdge origin)
      Description copied from interface: DataFetchersDelegateCharacterEdge
      This method loads the data for CharacterEdge.node.
      Specified by:
      node in interface DataFetchersDelegateCharacterEdge
      Parameters:
      dataFetchingEnvironment - The GraphQL DataFetchingEnvironment. It gives you access to the full GraphQL context for this DataFetcher
      origin - 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.
    • node

      public CompletableFuture<Character> node​(graphql.schema.DataFetchingEnvironment dataFetchingEnvironment, org.dataloader.DataLoader<UUID,​Character> dataLoader, CharacterEdge origin)
      Description copied from interface: DataFetchersDelegateCharacterEdge
      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:
      Specified by:
      node in interface DataFetchersDelegateCharacterEdge
      Parameters:
      dataFetchingEnvironment - The GraphQL DataFetchingEnvironment. It gives you access to the full GraphQL context for this DataFetcher
      dataLoader - The DataLoader 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-dataloader
      origin - 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.