From ffcee524c57b7e6122d971231cd7cd729d94dc0f Mon Sep 17 00:00:00 2001
From: Tanguy Leroux <tlrx.dev@gmail.com>
Date: Mon, 15 May 2017 15:19:19 +0200
Subject: [PATCH] Make SignificantTerms.Bucket an interface rather than an
 abstract class

Related to elastic/elasticsearch#24670

Original commit: elastic/x-pack-elasticsearch@e5b0123fbc98e8e103ffe20fea832d3a31925fd3
---
 .../xpack/graph/action/TransportGraphExploreAction.java       | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/plugin/src/main/java/org/elasticsearch/xpack/graph/action/TransportGraphExploreAction.java b/plugin/src/main/java/org/elasticsearch/xpack/graph/action/TransportGraphExploreAction.java
index ce51762d3a4..cbfa06cb0c8 100644
--- a/plugin/src/main/java/org/elasticsearch/xpack/graph/action/TransportGraphExploreAction.java
+++ b/plugin/src/main/java/org/elasticsearch/xpack/graph/action/TransportGraphExploreAction.java
@@ -668,7 +668,7 @@ public class TransportGraphExploreAction extends HandledTransportAction<GraphExp
                             VertexRequest vr = rootHop.getVertexRequest(j);
                             if (request.useSignificance()) {
                                 SignificantTerms significantTerms = sample.getAggregations().get("field" + j);
-                                List<Bucket> buckets = significantTerms.getBuckets();
+                                List<? extends Bucket> buckets = significantTerms.getBuckets();
                                 for (Bucket bucket : buckets) {
                                     double signalWeight = bucket.getSignificanceScore() / totalSignalStrength;
                                     addVertex(vr.fieldName(), bucket.getKeyAsString(), signalWeight, 
@@ -695,7 +695,7 @@ public class TransportGraphExploreAction extends HandledTransportAction<GraphExp
                             if (request.useSignificance()) {
                                 // Signal is based on significance score
                                 SignificantTerms significantTerms = sample.getAggregations().get("field" + i);
-                                List<Bucket> buckets = significantTerms.getBuckets();
+                                List<? extends Bucket> buckets = significantTerms.getBuckets();
                                 for (Bucket bucket : buckets) {
                                     totalSignalStrength += bucket.getSignificanceScore();
                                 }