[JIRANONE] modify JDBC client, if there is no action after query, before...

[JIRANONE] modify JDBC client, if there is no action after query, before return 0 rows result, now throw exception

src/client/src/TSDBJNIConnector.c

@@ -396,8 +396,18 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_fetchRowImp(JNIEn
 
   TAOS_ROW row = taos_fetch_row(result);
   if (row == NULL) {
-    jniTrace("jobj:%p, taos:%p, resultset:%p, fields size is %d, fetch row to the end", jobj, tscon, res, num_fields);
-    return JNI_FETCH_END;
+    int tserrno = taos_errno(tscon);
+    if (tserrno == 0) {
+      jniTrace("jobj:%p, taos:%p, resultset:%p, fields size is %d, fetch row to the end", jobj, tscon, res, num_fields);
+      return JNI_FETCH_END;
+    } else {
+      jclass cls;
+      cls = (*env)->FindClass(env,"com/taosdata/jdbc/TSDBError");
+      if(cls == NULL){
+        return JNI_TDENGINE_ERROR;
+      }
+      (*env)->ThrowNew(env,cls,"Interruppted query");
+    }
   }
 
   for (int i = 0; i < num_fields; i++) {
@@ -619,4 +629,4 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_validateCreateTab
 
 JNIEXPORT jstring JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_getTsCharset(JNIEnv *env, jobject jobj) {
   return (*env)->NewStringUTF(env, (const char *)tsCharset);
-}
+}
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