update README.md

README.md

@@ -66,44 +66,7 @@ print(enc_path, tte_path, tok_path)
 Required libraries:
 - `onnxruntime`
 - `onnxruntime-extensions` (build with `-DOCOS_ENABLE_SPM_TOKENIZER=ON`)
-- `pg_onnx` (PostgreSQL extension)
-
-Note: To enable SentencePiece tokenizer support, ensure `libortextensions.so` is registered via `RegisterCustomOpsLibrary` in `onnxruntime-server/src/onnx/session.cpp`.
-
-``` C++
-Orts::onnx::session::session(session_key key, const std::string &path, const json &option)
-        : session(std::move(key), option) {
-#ifdef _WIN32
-        int size_needed = MultiByteToWideChar(CP_ACP, 0, path.c_str(), -1, NULL, 0);
-        std::wstring wstr(size_needed, 0);
-        MultiByteToWideChar(CP_ACP, 0, path.c_str(), -1, &wstr[0], size_needed);
-
-        auto model_path = wstr.c_str();
-#else
-        auto model_path = path.c_str();
-#endif
-
-        void* handle = nullptr;
-        const char* ext_path = "libortextensions.so";
-        OrtStatus* status = Ort::GetApi().RegisterCustomOpsLibrary(session_options, ext_path, &handle);
-
-        ort_session = new Ort::Session(env, model_path, session_options);
-        init();
-}
-
-Orts::onnx::session::session(
-        session_key key, const char *model_data, const size_t model_data_length, const json &option
-)
-        : session(std::move(key), option) {
-
-        void* handle = nullptr;
-        const char* ext_path = "libortextensions.so";
-        OrtStatus* status = Ort::GetApi().RegisterCustomOpsLibrary(session_options, ext_path, &handle);
-
-        ort_session = new Ort::Session(env, model_data, model_data_length, session_options);
-        init();
-}
-```
+- `pg_onnx` (v1.23.1b or later)
 
 -- After building pg_onnx, install the pg_onnx extension
 ``` SQL
@@ -115,8 +78,8 @@ create extension pg_onnx
 ```sql
 
 -- Register models
-select pg_onnx_import_model('e5-tok', 'v1', pg_read_binary_file('/PATH/tokenizer.onnx')::bytea, jsonb('{}'), 'e5 tokenizer');
-select pg_onnx_import_model('e5-embedding', 'v1', pg_read_binary_file('/PATH/text_to_embedding.onnx')::bytea, jsonb('{}'), 'e5 text to embedding');
+select pg_onnx_import_model('e5-tok', 'v1', pg_read_binary_file('/PATH/tokenizer.onnx')::bytea, '{"ortextensions_path": "libortextensions.so"}'::jsonb, 'e5 tokenizer');
+select pg_onnx_import_model('e5-embedding', 'v1', pg_read_binary_file('/PATH/text_to_embedding.onnx')::bytea, '{"ortextensions_path": "libortextensions.so"}'::jsonb, 'e5 text to embedding');
 
 -- Create functions
 create or replace function e5_tok(input_text text)