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Prince_Shivhare
Community Advisor
Prince_ShivhareCommunity Advisor
Community Advisor
April 30, 2023
Solved

AEM Graphql Java

  • April 30, 2023
  • 4 replies
  • 4016 views

Hi Community,

 

I am trying to create a graphQl endpoint using the https://www.graphql-java.com/documentation/getting-started/ .

 

So I'll be writing this sample code in Servlet and trying to print the same response {hello=world} using the Servlet endpoint.

But when I am adding the dependency, the bundle is never active when I run the core maven build and always fails during the full build.

Could you help me with what I am missing here?

Thank you,

Prince

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Best answer by Prince_Shivhare

Strangely, I don't have any compile issues.
Could you help me with what changes you made in core pom for the BND plugin?

4 replies

Sachin_Arora_
Community Advisor
Sachin_Arora_Community Advisor
Community Advisor
May 1, 2023

@prince_shivhare Can you please share build error and list of packages not getting resolved in bundle. 

Please confirm you are trying to add below dependency in code.

<dependency> <groupId>com.graphql-java</groupId> <artifactId>graphql-java</artifactId> <version>20.2</version> </dependency>
    Prince_Shivhare
    Community Advisor
    Prince_ShivhareCommunity AdvisorAuthor
    Community Advisor
    May 1, 2023

    It's an error of some dependent jars in a graphql-java.
    If you'll try to setup the same and use the example Java code provided in the link. you'll see the error during the build.

      Sachin_Arora_
      Community Advisor
      Sachin_Arora_Community Advisor
      Community Advisor
      May 1, 2023

      @prince_shivhare I got compilation error and after changing below code it fixed the issue and build failure also did not come. 

      RuntimeWiring runtimeWiring = RuntimeWiring.newRuntimeWiring() .type("Query", builder -> builder.dataFetcher("hello", new StaticDataFetcher("world"))) .build();

       For bundle to be active, you need to embed the graphql jar in BND plugin to resolve import issues.

        Prince_Shivhare
        Community Advisor
        Prince_ShivhareCommunity AdvisorAuthorAccepted solution
        Community Advisor
        May 1, 2023

        Strangely, I don't have any compile issues.
        Could you help me with what changes you made in core pom for the BND plugin?

          L
          Lakshmi99
          Level 2
          July 19, 2023

          Hi @prince_shivhare 

          I'm also facing the same issue. Could you please provide me the steps if you already fix it?

           

          Thank you!

          Prince_Shivhare
          Community Advisor
          Prince_ShivhareCommunity AdvisorAuthor
          Community Advisor
          July 20, 2023

          @lakshmi99 ,

           

          Could you please help me with your usecase?

          L
          Lakshmi99
          Level 2
          July 20, 2023

          Hi @prince_shivhare 

          Use case: Expose content fragments data using servlet through graphql. 

          Trying sample code in the link above but getting many dependency issues fir the below. Tried to resolve but no luck.

          import static graphql.schema.idl.RuntimeWiring.newRuntimeWiring;
          import graphql.ExecutionResult;
          import graphql.GraphQL;
          import graphql.schema.GraphQLSchema;
          import graphql.schema.StaticDataFetcher;
          import graphql.schema.idl.RuntimeWiring;
          import graphql.schema.idl.SchemaGenerator;
          import graphql.schema.idl.SchemaParser;
          import graphql.schema.idl.TypeDefinitionRegistry;

          public class GQLService {

          public static void main(String[] args) {
          String schema = "type Query{hello: String}";
          SchemaParser schemaParser = new SchemaParser();
          TypeDefinitionRegistry typeDefinitionRegistry = schemaParser.parse(schema);
          RuntimeWiring runtimeWiring = newRuntimeWiring()
          .type("Query", builder -> builder.dataFetcher("hello", new StaticDataFetcher("world")))
          .build();
          SchemaGenerator schemaGenerator = new SchemaGenerator();
          GraphQLSchema graphQLSchema = schemaGenerator.makeExecutableSchema(typeDefinitionRegistry, runtimeWiring);
          GraphQL build = GraphQL.newGraphQL(graphQLSchema).build();
          ExecutionResult executionResult = build.execute("{hello}");
          System.out.println(executionResult.getData().toString());
          // Prints: {hello=world}
          }
          }

           

           

          Thank you

          sarav_prakash
          Community Advisor
          sarav_prakashCommunity Advisor
          Community Advisor
          February 10, 2025

          @prince_shivhare , referring to your question, I wrote an article explaining different ways to fetch graphql response https://medium.com/@bsaravanaprakash/aem-graphql-fa%C3%A7ade-patterns-building-wrappers-apis-around-aem-graphql-92f36f5a79d8

           

          You may read at your leisure. 

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