Root Group.
| 1134 | |
| 1135 | # Special definition for group root |
| 1136 | class RootGroup(Group): |
| 1137 | """Root Group.""" |
| 1138 | |
| 1139 | def __init__( |
| 1140 | self, ptfile: File, name: str, title: str, new: bool, filters: Filters |
| 1141 | ) -> None: |
| 1142 | mydict = self.__dict__ |
| 1143 | |
| 1144 | # Set group attributes. |
| 1145 | self._v_version = obversion |
| 1146 | self._v_new = new |
| 1147 | if new: |
| 1148 | self._v_new_title = title |
| 1149 | self._v_new_filters = filters |
| 1150 | else: |
| 1151 | self._v_new_title = None |
| 1152 | self._v_new_filters = None |
| 1153 | |
| 1154 | # Set node attributes. |
| 1155 | self._v_file = ptfile |
| 1156 | self._v_isopen = True # root is always open |
| 1157 | self._v_pathname = "/" |
| 1158 | self._v_name = "/" |
| 1159 | self._v_depth = 0 |
| 1160 | self._v_max_group_width = ptfile.params["MAX_GROUP_WIDTH"] |
| 1161 | self._v__deleting = False |
| 1162 | self._v_objectid: int | None = None # later |
| 1163 | |
| 1164 | # Only the root node has the file as a parent. |
| 1165 | # Bypass __setattr__ to avoid the ``Node._v_parent`` property. |
| 1166 | mydict["_v_parent"] = ptfile |
| 1167 | ptfile._node_manager.register_node(self, "/") |
| 1168 | |
| 1169 | # hdf5extension operations (do before setting an AttributeSet): |
| 1170 | # Update node attributes. |
| 1171 | self._g_new(ptfile, name, init=True) |
| 1172 | # Open the node and get its object ID. |
| 1173 | self._v_objectid = self._g_open() |
| 1174 | |
| 1175 | # Set disk attributes and read children names. |
| 1176 | # |
| 1177 | # This *must* be postponed because this method needs the root node |
| 1178 | # to be created and bound to ``File.root``. |
| 1179 | # This is an exception to the rule, handled by ``File.__init()__``. |
| 1180 | # |
| 1181 | # self._g_post_init_hook() |
| 1182 | |
| 1183 | def _g_load_child( |
| 1184 | self, |
| 1185 | childname: str, |
| 1186 | ) -> ExternalLink | Group | Node | SoftLink | UnImplemented | Unknown: |
| 1187 | """Load a child node from disk. |
| 1188 | |
| 1189 | The child node `childname` is loaded from disk and an adequate |
| 1190 | `Node` object is created and returned. If there is no such |
| 1191 | child, a `NoSuchNodeError` is raised. |
| 1192 | |
| 1193 | """ |