Restore 0.1.5 version from stash

2025-12-08 19:56:24 +08:00
parent de189e938d
commit 8db3f4e32d
8578 changed files with 2703426 additions and 217 deletions
@@ -0,0 +1,28 @@
+import psycopg2
+from psycopg2.extensions import cursor
+from .halfvec import register_halfvec_info
+from .sparsevec import register_sparsevec_info
+from .vector import register_vector_info
+
+
+# TODO make globally False by default in 0.4.0
+# note: register_adapter is always global
+def register_vector(conn_or_curs=None, globally=True):
+    conn = conn_or_curs if hasattr(conn_or_curs, 'cursor') else conn_or_curs.connection
+    cur = conn.cursor(cursor_factory=cursor)
+    scope = None if globally else conn_or_curs
+
+    # use to_regtype to get first matching type in search path
+    cur.execute("SELECT typname, oid FROM pg_type WHERE oid IN (to_regtype('vector'), to_regtype('halfvec'), to_regtype('sparsevec'))")
+    type_info = dict(cur.fetchall())
+
+    if 'vector' not in type_info:
+        raise psycopg2.ProgrammingError('vector type not found in the database')
+
+    register_vector_info(type_info['vector'], scope)
+
+    if 'halfvec' in type_info:
+        register_halfvec_info(type_info['halfvec'], scope)
+
+    if 'sparsevec' in type_info:
+        register_sparsevec_info(type_info['sparsevec'], scope)