creation of the directory is no a separate method

database.cpp

@@ -51,16 +51,7 @@ void DataBase::open()
 {
     if (!opened) {
         mdb_env_create(&environment);
-        QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
-        path += "/" + getName();
-        QDir cache(path);
-
-        if (!cache.exists()) {
-            bool res = cache.mkpath(path);
-            if (!res) {
-                throw Directory(path.toStdString());
-            }
-        }
+        QString path = createDirectory();
 
         mdb_env_set_maxdbs(environment, tables.size());
         mdb_env_set_mapsize(environment, size * 1024UL * 1024UL);
@@ -98,6 +89,27 @@ bool DataBase::removeDirectory()
     }
 }
 
+QString DataBase::createDirectory()
+{
+    if (opened) {
+        throw Opened(name, "create database directory");
+    }
+
+    QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
+    path += "/" + getName();
+    QDir cache(path);
+
+    if (!cache.exists()) {
+        bool res = cache.mkpath(path);
+        if (!res) {
+            throw Directory(path.toStdString());
+        }
+    }
+
+    return path;
+}
+
+
 QString DataBase::getName() const
 {
     return QString::fromStdString(name);

database.h

@@ -44,9 +44,11 @@ public:
     void close();
     bool ready() const;
     bool removeDirectory();
+    QString createDirectory();
     QString getName() const;
     void drop();
 
+
     template <class K, class V>
     Table<K, V>* addTable(const std::string& name);