!7761 change GetInputsByName to GetInputByTensorName

Merge pull request !7761 from yeyunpeng2020/java

mindspore/lite/java/java/app/src/main/java/com/mindspore/lite/LiteSession.java

@@ -66,14 +66,13 @@ public class LiteSession {
         return tensors;
     }
 
-    public List<MSTensor> getInputsByName(String nodeName) {
-        List<Long> ret = this.getInputsByName(this.sessionPtr, nodeName);
-        ArrayList<MSTensor> tensors = new ArrayList<>();
-        for (Long msTensorAddr : ret) {
-            MSTensor msTensor = new MSTensor(msTensorAddr);
-            tensors.add(msTensor);
+    public MSTensor getInputsByTensorName(String tensorName) {
+        Long tensor_addr = this.getInputsByTensorName(this.sessionPtr, tensorName);
+        if(tensor_addr == null){
+            return null;
         }
-        return tensors;
+        MSTensor msTensor = new MSTensor(tensor_addr);
+        return msTensor;
     }
 
     public List<MSTensor> getOutputsByNodeName(String nodeName) {
@@ -104,6 +103,9 @@ public class LiteSession {
 
     public MSTensor getOutputByTensorName(String tensorName) {
         Long tensor_addr = getOutputByTensorName(this.sessionPtr, tensorName);
+        if(tensor_addr == null){
+            return null;
+        }
         return new MSTensor(tensor_addr);
     }
 
@@ -130,7 +132,7 @@ public class LiteSession {
 
     private native List<Long> getInputs(long sessionPtr);
 
-    private native List<Long> getInputsByName(long sessionPtr, String nodeName);
+    private native Long getInputsByTensorName(long sessionPtr, String tensorName);
 
     private native List<Long> getOutputsByNodeName(long sessionPtr, String nodeName);
 

mindspore/lite/java/java/app/src/main/native/runtime/lite_session.cpp

@@ -102,27 +102,17 @@ extern "C" JNIEXPORT jobject JNICALL Java_com_mindspore_lite_LiteSession_getInpu
   return ret;
 }
 
-extern "C" JNIEXPORT jobject JNICALL Java_com_mindspore_lite_LiteSession_getInputsByTensorName(JNIEnv *env,
-                                                                                               jobject thiz,
-                                                                                               jlong session_ptr,
-                                                                                               jstring tensor_name) {
-  jclass array_list = env->FindClass("java/util/ArrayList");
-  jmethodID array_list_construct = env->GetMethodID(array_list, "<init>", "()V");
-  jobject ret = env->NewObject(array_list, array_list_construct);
-  jmethodID array_list_add = env->GetMethodID(array_list, "add", "(Ljava/lang/Object;)Z");
-
-  jclass long_object = env->FindClass("java/lang/Long");
-  jmethodID long_object_construct = env->GetMethodID(long_object, "<init>", "(J)V");
+extern "C" JNIEXPORT jlong JNICALL Java_com_mindspore_lite_LiteSession_getInputsByTensorName(JNIEnv *env, jobject thiz,
+                                                                                             jlong session_ptr,
+                                                                                             jstring tensor_name) {
   auto *pointer = reinterpret_cast<void *>(session_ptr);
   if (pointer == nullptr) {
     MS_LOGE("Session pointer from java is nullptr");
-    return ret;
+    return jlong(nullptr);
   }
   auto *lite_session_ptr = static_cast<mindspore::session::LiteSession *>(pointer);
   auto input = lite_session_ptr->GetInputsByTensorName(JstringToChar(env, tensor_name));
-  jobject tensor_addr = env->NewObject(long_object, long_object_construct, jlong(input));
-  env->CallBooleanMethod(ret, array_list_add, tensor_addr);
-  return ret;
+  return jlong(input);
 }
 
 extern "C" JNIEXPORT jobject JNICALL Java_com_mindspore_lite_LiteSession_getOutputsByNodeName(JNIEnv *env, jobject thiz,