fix for new-version of iterator(#1660) (#1658)

Signed-off-by: MrPresent-Han <[email protected]>

pymilvus/orm/iterator.py

@@ -12,8 +12,11 @@
 from .constants import (
     BATCH_SIZE,
     CALC_DIST_COSINE,
+    CALC_DIST_HAMMING,
     CALC_DIST_IP,
+    CALC_DIST_JACCARD,
     CALC_DIST_L2,
+    CALC_DIST_TANIMOTO,
     DEFAULT_SEARCH_EXTENSION_RATE,
     FIELDS,
     INT64_MAX,
@@ -192,31 +195,13 @@ def close(self) -> None:
 
 
 def metrics_positive_related(metrics: str) -> bool:
-    if metrics is CALC_DIST_L2:
+    if metrics in [CALC_DIST_L2, CALC_DIST_JACCARD, CALC_DIST_HAMMING, CALC_DIST_TANIMOTO]:
         return True
     if metrics is CALC_DIST_IP or metrics is CALC_DIST_COSINE:
         return False
     raise MilvusException(message=f"unsupported metrics type for search iteration{metrics}")
 
 
-class SearchHit:
-    def __init__(self, id: Any, distance: Any):
-        self._id = id
-        self._distance = distance
-
-
-"""
-class SearchHits:
-
-    def __init__(self, ids: list, distances: list):
-        self._ids = ids
-        self._distances = distances
-
-    def __next__(self):
-        return Hit()
-"""
-
-
 class SearchPage(LoopBase):
     """Since we only support nq=1 in search iteration, so search iteration response
     should be different from raw response of search operation"""
@@ -257,6 +242,20 @@ def merge(self, others: List[Hits]):
             for other in others:
                 self._results.append(other)
 
+    def ids(self):
+        ids = []
+        for res in self._results:
+            for hit in res:
+                ids.append(hit.id)
+        return ids
+
+    def distances(self):
+        distances = []
+        for res in self._results:
+            for hit in res:
+                distances.append(hit.distance)
+        return distances
+
 
 class SearchIterator:
     def __init__(
@@ -335,6 +334,8 @@ def __check_set_params(self, param: Dict):
             self._param = {}
         else:
             self._param = deepcopy(param)
+        if PARAMS not in self._param:
+            self._param[PARAMS] = {}
 
     def __setup__pk_prop(self):
         fields = self._schema[FIELDS]