Added support for ADDSCORES argument in FT.AGGREGATE (#3908)

(cherry picked from commit 7b121c4)

Author: uglide

src/main/java/redis/clients/jedis/search/SearchProtocol.java

@@ -56,7 +56,7 @@ public enum SearchKeyword implements Rawable {
     LANGUAGE_FIELD, SCORE, SCORE_FIELD, SCORER, PARAMS, AS, DIALECT, SLOP, TIMEOUT, INORDER,
     EXPANDER, MAXTEXTFIELDS, SKIPINITIALSCAN, WITHSUFFIXTRIE, NOSTEM, NOINDEX, PHONETIC, WEIGHT,
     CASESENSITIVE, LOAD, APPLY, GROUPBY, MAXIDLE, WITHCURSOR, DISTANCE, TERMS, INCLUDE, EXCLUDE,
-    SEARCH, AGGREGATE, QUERY, LIMITED, COUNT, REDUCE, INDEXMISSING, INDEXEMPTY;
+    SEARCH, AGGREGATE, QUERY, LIMITED, COUNT, REDUCE, INDEXMISSING, INDEXEMPTY, ADDSCORES;
 
     private final byte[] raw;
 

src/main/java/redis/clients/jedis/search/aggr/AggregationBuilder.java

@@ -170,6 +170,11 @@ public AggregationBuilder timeout(long timeout) {
     return this;
   }
 
+  public AggregationBuilder addScores() {
+    aggrArgs.add(SearchKeyword.ADDSCORES);
+    return this;
+  }
+
   public AggregationBuilder params(Map<String, Object> params) {
     aggrArgs.add(SearchKeyword.PARAMS);
     aggrArgs.add(params.size() << 1);

src/test/java/redis/clients/jedis/modules/search/AggregationTest.java

@@ -192,6 +192,23 @@ public void testAggregationBuilderVerbatim() {
     assertEquals(0, res.getTotalResults());
   }
 
+  @Test
+  public void testAggregationBuilderAddScores() {
+    Schema sc = new Schema();
+    sc.addSortableTextField("name", 1.0);
+    sc.addSortableNumericField("age");
+    client.ftCreate(index, IndexOptions.defaultOptions(), sc);
+    addDocument(new Document("data1").set("name", "Adam").set("age", 33));
+    addDocument(new Document("data2").set("name", "Sara").set("age", 44));
+
+    AggregationBuilder r = new AggregationBuilder("sara").addScores()
+        .apply("@__score * 100", "normalized_score").dialect(3);
+
+    AggregationResult res = client.ftAggregate(index, r);
+    assertEquals(2, res.getRow(0).getLong("__score"));
+    assertEquals(200, res.getRow(0).getLong("normalized_score"));
+  }
+
   @Test
   public void testAggregationBuilderTimeout() {
     Schema sc = new Schema();