title: Usage of GraphQL for Neo4j and Ontotext GraphDB simultaneously
body: <p>I have two instances of two different database engines (Neo4j and Ontotext GraphDB) and I want to create common interface in GraphQL for these databases.</p>
  
  <p>I want to use Java to create endpoint with GraphQL.</p>
  
  <p>Should I use graphql-java library or do you recommend something else to merging usage of different database engines?</p>
  
  <p>I looking for most flexible solution for this type of problem.</p>