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  • import { ApolloClient, InMemoryCache, HttpLink, gql } from '@apollo/client';
    
    const MEMBER_DETAILS = gql`
      query Member {
        member {
          name
          role
          isLoggedIn @client
        }
      }
    `;
    
    const client = new ApolloClient({
      link: new HttpLink({ uri: 'http://localhost:4000/graphql' }),
      cache: new InMemoryCache(),
      resolvers: {
        Member: {
          isLoggedIn() {
            return someInternalLoginVerificationFunction();
          }
        }
      },
    });
    
    // ... run the query using client.query, the <Query /> component, etc.
    Docs
  • // Create a client
      val apolloClient = ApolloClient.Builder()
          .serverUrl("https://example.com/graphql")
          .build()
    
      // Execute your query. This will suspend until the response is received.
      val response = apolloClient.query(HeroQuery(id = "1")).execute()
    
      println("Hero.name=${response.data?.hero?.name}")
    Docs
  • import { ApolloClient, InMemoryCache, HttpLink, gql } from '@apollo/client';
    
    const query = gql`
      query CurrentAuthorPostCount($authorId: Int!) {
        currentAuthor @client {
          name
          authorId @export(as: "authorId")
        }
        postCount(authorId: $authorId)
      }
    `;
    
    const cache = new InMemoryCache();
    const client = new ApolloClient({
      link: new HttpLink({ uri: 'http://localhost:4000/graphql' }),
      cache,
      resolvers: {},
    });
    
    cache.writeQuery({
      query: gql`
        query GetCurrentAuthor {
          currentAuthor {
            name
            authorId
          }
        }
      `,
      data: {
        currentAuthor: {
          __typename: 'Author',
          name: 'John Smith',
          authorId: 12345,
        },
      },
    });
    
    // ... run the query using client.query, the <Query /> component, etc.
    Docs
  • import { ApolloClient, InMemoryCache } from '@apollo/client';
    
    const client = new ApolloClient({
      cache: new InMemoryCache({
        typePolicies: {
          Query: {
            fields: {
              book: {
                read(_, { args, toReference }) {
                  return toReference({
                    __typename: 'Book',
                    id: args.id,
                  });
                }
              }
            }
          }
        }
      })
    });
    Docs
  • import { ApolloClient, InMemoryCache, gql } from '@apollo/client';
    
    const client = new ApolloClient({
      cache: new InMemoryCache(),
      resolvers: {
        Query: {
          isLoggedIn() {
            return !!localStorage.getItem('token');
          },
        },
      },
    });
    
    const IS_LOGGED_IN = gql`
      query IsUserLoggedIn {
        isLoggedIn @client(always: true)
      }
    `;
    
    // ... run the query using client.query, a <Query /> component, etc.
    Docs
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