made deafult contexts public classes, simplified stream logic in request stack

Author: jmccaull

src/main/java/graphql/servlet/context/DefaultGraphQLServletContext.java

@@ -10,7 +10,7 @@
 import java.util.Map;
 import java.util.stream.Collectors;
 
-class DefaultGraphQLServletContext extends DefaultGraphQLContext implements GraphQLServletContext {
+public class DefaultGraphQLServletContext extends DefaultGraphQLContext implements GraphQLServletContext {
 
     private final HttpServletRequest httpServletRequest;
     private final HttpServletResponse httpServletResponse;

src/main/java/graphql/servlet/context/DefaultGraphQLWebSocketContext.java

@@ -8,7 +8,7 @@
 import javax.websocket.server.HandshakeRequest;
 import java.util.Optional;
 
-class DefaultGraphQLWebSocketContext extends DefaultGraphQLContext implements GraphQLWebSocketContext {
+public class DefaultGraphQLWebSocketContext extends DefaultGraphQLContext implements GraphQLWebSocketContext {
 
     private final Session session;
     private final HandshakeRequest handshakeRequest;

src/main/java/graphql/servlet/instrumentation/RequestStack.java

@@ -124,9 +124,8 @@ public void setStatus(ExecutionId executionId, boolean toState) {
      * @return if all managed executions are ready to be dispatched.
      */
     public boolean allReady() {
-        List<Integer> dispatchStack = activeRequests.values().stream().findFirst().map(CallStack::getDispatchedLevels).orElse(Collections.emptyList());
         return status.values().stream().noneMatch(Boolean.FALSE::equals) &&
-            activeRequests.values().stream().map(CallStack::getDispatchedLevels).allMatch(dispatchStack::equals);
+            activeRequests.values().stream().map(CallStack::getDispatchedLevels).distinct().count() <= 1;
     }
 
     /**