Add ability to use search_after parameter

src/DSL/Bridge.php

@@ -1059,6 +1059,10 @@ private function _sanitizeSearchResponse($response, $params, $queryTag)
                     $datum['_meta']['highlights'] = $this->_sanitizeHighlights($hit['highlight']);
                 }
 
+                if (!empty($hit['sort']) && is_array($hit['sort'])) {
+                    $datum['_meta']['sort'] = $hit['sort'];
+                }
+
                 $datum['_meta']['_index'] = $hit['_index'];
                 $datum['_meta']['_id'] = $hit['_id'];
                 if (!empty($hit['_score'])) {

src/DSL/QueryBuilder.php

@@ -440,6 +440,9 @@ private function _buildOptions($options): array
                             }
                         }
                         break;
+                    case 'search_after':
+                        $return['body']['search_after'] = $value;
+                        break;
                     case 'skip':
                         $return['from'] = $value;
                         break;

src/Eloquent/Builder.php

@@ -441,6 +441,15 @@ public function minScore(float $value)
         return $this;
     }
 
+    public function searchAfter(array $sort): self
+    {
+        if (empty($sort)) {
+            return $this;
+        }
+        $this->query->searchAfter($sort);
+        return $this;
+    }
+
     /**
      * @param    string    $field
      * @param    int|null    $boostFactor

src/Eloquent/Docs/ModelDocs.php

@@ -19,6 +19,7 @@
  * @method $this minScore(float $value)
  * @method $this field(string $field, int $boostFactor = null)
  * @method $this fields(array $fields)
+ * @method $this searchAfter(array $sort)
  * @method sum(array|string $columns)
  * @method min(array|string $columns)
  * @method max(array|string $columns)

src/Query/Builder.php

@@ -36,6 +36,8 @@ class Builder extends BaseBuilder
 
     public $filters = [];
 
+    public $searchAfter = [];
+
     /**
      * Clause ops.
      *
@@ -792,6 +794,15 @@ public function orWhereRegex($column, $expression)
         return $this;
     }
 
+    public function searchAfter($sort)
+    {
+        if (!is_array($sort) || !Arr::isList($sort)) {
+            throw new RuntimeException('Incorrect "searchAfter" value');
+        }
+        $this->searchAfter = $sort;
+        return $this;
+    }
+
     /**
      * @inheritdoc
      */
@@ -857,6 +868,9 @@ protected function compileOptions()
         if ($this->filters) {
             $options['filters'] = $this->filters;
         }
+        if (!empty($this->searchAfter)) {
+            $options['search_after'] = $this->searchAfter;
+        }
 
         return $options;
     }