Fix batching query

Author: oliemansm

gradle.properties

@@ -15,4 +15,4 @@ LIB_JACKSON_VER = 2.10.0
 SOURCE_COMPATIBILITY = 1.8
 TARGET_COMPATIBILITY = 1.8
 
-GRADLE_WRAPPER_VER = 5.6.4
+GRADLE_WRAPPER_VER = 6.0.1

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 #Thu Nov 14 18:53:34 CET 2019
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.0.1-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists

graphql-java-kickstart/src/main/java/graphql/kickstart/execution/GraphQLInvoker.java

@@ -42,6 +42,8 @@ private List<ExecutionResult> query(GraphQLBatchedInvocationInput batchedInvocat
     GraphQL graphQL = batchedDataLoaderGraphQLBuilder.newGraphQL(batchedInvocationInput, graphQLBuilder);
     return batchedInvocationInput.getExecutionInputs().stream()
         .map(executionInput -> proxy.executeAsync(graphQL, executionInput))
+        .collect(toList())
+        .stream()
         .map(CompletableFuture::join)
         .collect(toList());
   }