diff --git a/ge/generator/ge_generator.cc b/ge/generator/ge_generator.cc
index 8a94aa9b..1796d424 100644
--- a/ge/generator/ge_generator.cc
+++ b/ge/generator/ge_generator.cc
@@ -452,7 +452,9 @@ Status GeGenerator::Initialize(const map<string, string> &options, OmgContext &o
 
 Status GeGenerator::Finalize() {
   ErrorManager::GetInstance().SetStage(error_message::kFinalize, error_message::kFinalize);
-  GE_CHECK_NOTNULL_EXEC(impl_, return PARAM_INVALID);
+  if (impl_ == nullptr) {
+    return SUCCESS;
+  }
   Status ret = impl_->graph_manager_.Finalize();
   if (ret != SUCCESS) {
     GELOGE(GE_GENERATOR_GRAPH_MANAGER_FINALIZE_FAILED, "[Call][Finalize] Graph manager finalize failed.");
diff --git a/ge/offline/single_op_parser.cc b/ge/offline/single_op_parser.cc
index ce9448d5..5a8ca923 100644
--- a/ge/offline/single_op_parser.cc
+++ b/ge/offline/single_op_parser.cc
@@ -89,6 +89,7 @@ map<string, DataType> kDataTypeDict = {
     {"float", DT_FLOAT},
     {"float32", DT_FLOAT},
     {"double", DT_DOUBLE},
+    {"complex64", DT_COMPLEX64}
 };
 
 map<string, Format> kFormatDict = {
@@ -161,9 +162,13 @@ std::string GenerateFileName(const SingleOpDesc &single_op_desc, int index) {
 }
 }  // namespace
 
-template<typename T>
-void SetAttrValue(const Json &j, SingleOpAttr &attr) {
-  attr.value.SetValue<T>(j.at(kKeyValue).get<T>());
+bool AttrValueIsString(const Json &j, const string &key) {
+  try {
+    string tmp_str = j.at(key).get<string>();
+    return true;
+  } catch (Json::type_error &e) {
+    return false;
+  }
 }
 
 template<typename T>
@@ -177,6 +182,20 @@ T GetValue(const map<string, T> &dict, string &key, T default_val) {
   return it->second;
 }
 
+template<typename T>
+void SetAttrValue(const Json &j, SingleOpAttr &attr) {
+  // when attr type is "data_type", we support two kinds of attr value.
+  // 1. value: "DT_FLOAT", "DT_INT32", "DT_INT8" ...
+  // 2. value: 1, 3 ...
+  if (j.at(kKeyType).get<string>() == "data_type" && AttrValueIsString(j, kKeyValue)) {
+    string type_str = j.at(kKeyValue).get<string>();
+    DataType dtype = TypeUtils::SerialStringToDataType(type_str);
+    attr.value.SetValue<DataType>(dtype);
+    return;
+  }
+  attr.value.SetValue<T>(j.at(kKeyValue).get<T>());
+}
+
 void from_json(const Json &j, SingleOpTensorDesc &desc) {
   bool is_tensor_valid = true;
   desc.dims = j.at(kKeyShape).get<vector<int64_t>>();