public ResourceIdentifier insertNode(NodeIdentifier identifier, DocumentNode node, Version version) throws org.dbwiki.exception.WikiException {
RDBMSDatabaseGroupNode parent = (RDBMSDatabaseGroupNode)DatabaseReader.get(_con, _database, identifier);
DatabaseNode entry = parent;
while (entry.parent() != null) {
entry = entry.parent();
}
// Idea: Find size of inserted subtree.
// Let newpre be the post index of the parent.
// Index to-be-inserted nodes starting from post, ending at newpost