Remove inconsistencies between range aggregations

Some aggregations supported pointers, some did not. This should now be
aligned and behaviour should be the same across implementations.

CONTRIBUTORS

@@ -15,6 +15,7 @@ Alex [@akotlar](https://github.com/akotlar)
 Alexandre Olivier [@aliphen](https://github.com/aliphen)
 Alexey Sharov [@nizsheanez](https://github.com/nizsheanez)
 AndreKR [@AndreKR](https://github.com/AndreKR)
+André Bierlein [@ligustah](https://github.com/ligustah)
 Andrew Dunham [@andrew-d](https://github.com/andrew-d)
 Andrew Gaul [@andrewgaul](https://github.com/andrewgaul)
 Arquivei [@arquivei](https://github.com/arquivei)

search_aggs_bucket_date_range.go

@@ -192,20 +192,32 @@ func (a *DateRangeAggregation) Source() (interface{}, error) {
 			switch from := ent.From.(type) {
 			case int, int16, int32, int64, float32, float64:
 				r["from"] = from
+			case *int, *int16, *int32, *int64, *float32, *float64:
+				r["from"] = from
 			case time.Time:
 				r["from"] = from.Format(time.RFC3339)
+			case *time.Time:
+				r["from"] = from.Format(time.RFC3339)
 			case string:
 				r["from"] = from
+			case *string:
+				r["from"] = from
 			}
 		}
 		if ent.To != nil {
 			switch to := ent.To.(type) {
 			case int, int16, int32, int64, float32, float64:
 				r["to"] = to
+			case *int, *int16, *int32, *int64, *float32, *float64:
+				r["to"] = to
 			case time.Time:
 				r["to"] = to.Format(time.RFC3339)
+			case *time.Time:
+				r["to"] = to.Format(time.RFC3339)
 			case string:
 				r["to"] = to
+			case *string:
+				r["to"] = to
 			}
 		}
 		ranges = append(ranges, r)

search_aggs_bucket_date_range_test.go

@@ -29,6 +29,31 @@ func TestDateRangeAggregation(t *testing.T) {
 	}
 }
 
+func TestDateRangeAggregationWithPointers(t *testing.T) {
+	d1 := "2012-12-31"
+	d2 := "2013-01-01"
+	d3 := "2013-12-31"
+	d4 := "2014-01-01"
+
+	agg := NewDateRangeAggregation().Field("created_at")
+	agg = agg.AddRange(nil, &d1)
+	agg = agg.AddRange(d2, &d3)
+	agg = agg.AddRange(d4, nil)
+	src, err := agg.Source()
+	if err != nil {
+		t.Fatal(err)
+	}
+	data, err := json.Marshal(src)
+	if err != nil {
+		t.Fatalf("marshaling to JSON failed: %v", err)
+	}
+	got := string(data)
+	expected := `{"date_range":{"field":"created_at","ranges":[{"to":"2012-12-31"},{"from":"2013-01-01","to":"2013-12-31"},{"from":"2014-01-01"}]}}`
+	if got != expected {
+		t.Errorf("expected\n%s\n,got:\n%s", expected, got)
+	}
+}
+
 func TestDateRangeAggregationWithUnbounded(t *testing.T) {
 	agg := NewDateRangeAggregation().Field("created_at").
 		AddUnboundedFrom("2012-12-31").

search_aggs_bucket_geo_distance.go

@@ -156,6 +156,8 @@ func (a *GeoDistanceAggregation) Source() (interface{}, error) {
 				r["from"] = from
 			case string:
 				r["from"] = from
+			case *string:
+				r["from"] = from
 			}
 		}
 		if ent.To != nil {
@@ -166,6 +168,8 @@ func (a *GeoDistanceAggregation) Source() (interface{}, error) {
 				r["to"] = to
 			case string:
 				r["to"] = to
+			case *string:
+				r["to"] = to
 			}
 		}
 		ranges = append(ranges, r)

search_aggs_bucket_geo_distance_test.go

@@ -29,6 +29,28 @@ func TestGeoDistanceAggregation(t *testing.T) {
 	}
 }
 
+func TestGeoDistanceAggregationWithPointers(t *testing.T) {
+	hundred := 100
+	threeHundred := 300
+	agg := NewGeoDistanceAggregation().Field("location").Point("52.3760, 4.894")
+	agg = agg.AddRange(nil, &hundred)
+	agg = agg.AddRange(hundred, &threeHundred)
+	agg = agg.AddRange(threeHundred, nil)
+	src, err := agg.Source()
+	if err != nil {
+		t.Fatal(err)
+	}
+	data, err := json.Marshal(src)
+	if err != nil {
+		t.Fatalf("marshaling to JSON failed: %v", err)
+	}
+	got := string(data)
+	expected := `{"geo_distance":{"field":"location","origin":"52.3760, 4.894","ranges":[{"to":100},{"from":100,"to":300},{"from":300}]}}`
+	if got != expected {
+		t.Errorf("expected\n%s\n,got:\n%s", expected, got)
+	}
+}
+
 func TestGeoDistanceAggregationWithUnbounded(t *testing.T) {
 	agg := NewGeoDistanceAggregation().Field("location").Point("52.3760, 4.894")
 	agg = agg.AddUnboundedFrom(100)

search_aggs_bucket_range.go

@@ -191,20 +191,32 @@ func (a *RangeAggregation) Source() (interface{}, error) {
 			switch from := ent.From.(type) {
 			case int, int16, int32, int64, float32, float64:
 				r["from"] = from
+			case *int, *int16, *int32, *int64, *float32, *float64:
+				r["from"] = from
 			case time.Time:
 				r["from"] = from.Format(time.RFC3339)
+			case *time.Time:
+				r["from"] = from.Format(time.RFC3339)
 			case string:
 				r["from"] = from
+			case *string:
+				r["from"] = from
 			}
 		}
 		if ent.To != nil {
 			switch to := ent.To.(type) {
 			case int, int16, int32, int64, float32, float64:
 				r["to"] = to
+			case *int, *int16, *int32, *int64, *float32, *float64:
+				r["to"] = to
 			case time.Time:
 				r["to"] = to.Format(time.RFC3339)
+			case *time.Time:
+				r["to"] = to.Format(time.RFC3339)
 			case string:
 				r["to"] = to
+			case *string:
+				r["to"] = to
 			}
 		}
 		ranges = append(ranges, r)

search_aggs_bucket_range_test.go

@@ -29,6 +29,28 @@ func TestRangeAggregation(t *testing.T) {
 	}
 }
 
+func TestRangeAggregationWithPointers(t *testing.T) {
+	fifty := 50
+	hundred := 100
+	agg := NewRangeAggregation().Field("price")
+	agg = agg.AddRange(nil, &fifty)
+	agg = agg.AddRange(fifty, &hundred)
+	agg = agg.AddRange(hundred, nil)
+	src, err := agg.Source()
+	if err != nil {
+		t.Fatal(err)
+	}
+	data, err := json.Marshal(src)
+	if err != nil {
+		t.Fatalf("marshaling to JSON failed: %v", err)
+	}
+	got := string(data)
+	expected := `{"range":{"field":"price","ranges":[{"to":50},{"from":50,"to":100},{"from":100}]}}`
+	if got != expected {
+		t.Errorf("expected\n%s\n,got:\n%s", expected, got)
+	}
+}
+
 func TestRangeAggregationWithUnbounded(t *testing.T) {
 	agg := NewRangeAggregation().Field("field_name").
 		AddUnboundedFrom(50).