[baseprocessor] self access to attribute via get_attribute

and self set via set_value and set_attribute

baseprocessor.py

@@ -230,6 +230,39 @@ class HDF5Container(BaseProcessor):
                 self.close()
         return value
 
+    def set_value(self, node_name, data, description, unit):
+        open_before = self.opened
+        if not open_before:
+            self.open()
+        try:
+            self._save_data(node_name, data, description, unit)
+        finally:
+            if not open_before:
+                self.close()
+
+    def get_attribute(self, node_name, attr_name):
+        open_before = self.opened
+        if not open_before:
+            self.open()
+        try:
+            node = self.save.get_node(node_name)
+            attr = node._v_attrs[attr_name]
+        finally:
+            if not open_before:
+                self.close()
+        return attr
+
+    def set_attribute(self, node_name, attr_name, attr_value):
+        open_before = self.opened
+        if not open_before:
+            self.open()
+        try:
+            node = self.save.get_node(node_name)
+            node._v_attrs[attr_name] = attr_value
+        finally:
+            if not open_before:
+                self.close()
+
     def _get_units(self, unit, data=None):
         """
         Get real units from info files
@@ -337,30 +370,6 @@ class HDF5Container(BaseProcessor):
                 key = str(key)
                 self.save.get_node(name_full)._v_attrs[key] = attrs[key]
 
-    def set_value(self, node_name, data, description, unit):
-        self.open()
-        try:
-            self._save_data(node_name, data, description, unit)
-        finally:
-            self.close()
-
-    def get_attribute(self, node_name, attr_name):
-        self.open()
-        try:
-            node = self.save.get_node(node_name)
-            attr = node._v_attrs[attr_name]
-        finally:
-            self.close()
-        return attr
-
-    def set_attribute(self, node_name, attr_name, attr_value):
-        self.open()
-        try:
-            node = self.save.get_node(node_name)
-            node._v_attrs[attr_name] = attr_value
-        finally:
-            self.close()
-
     def _transform(self, name, transform_fn, group="/maps", **kwargs):
         src = self.save.get_node(group + "/" + name).read()
         return transform_fn(src, **kwargs)