Restore 0.1.5 version from stash

wolai-backend/.venv312/Lib/site-packages/pgvector/psycopg2/vector.py

@@ -0,0 +1,21 @@
+import numpy as np
+from psycopg2.extensions import adapt, new_type, register_adapter, register_type
+from ..utils import Vector
+
+
+class VectorAdapter:
+    def __init__(self, value):
+        self._value = value
+
+    def getquoted(self):
+        return adapt(Vector._to_db(self._value)).getquoted()
+
+
+def cast_vector(value, cur):
+    return Vector._from_db(value)
+
+
+def register_vector_info(oid, scope):
+    vector = new_type((oid,), 'VECTOR', cast_vector)
+    register_type(vector, scope)
+    register_adapter(np.ndarray, VectorAdapter)