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tabo / django-treebeard

Efficient tree implementations for Django 1.0+ :: https://tabo.pe/projects/django-treebeard/

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django-treebeard / treebeard / exceptions.py

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1.5
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# -*- coding: utf-8 -*-
"""

    treebeard.exceptions
    --------------------

    Exceptions

    :copyright: 2008-2009 by Gustavo Picon
    :license: Apache License 2.0

"""


class InvalidPosition(Exception):
    """
    Raised when passing an invalid pos value
    """


class InvalidMoveToDescendant(Exception):
    """
    Raised when attemping to move a node to one of it's descendants.
    """


class MissingNodeOrderBy(Exception):
    """
    Raised when an operation needs a missing
    :attr:`~treebeard.MP_Node.node_order_by` attribute
    """


class PathOverflow(Exception):
    """
    Raised when trying to add or move a node to a position where no more nodes
    can be added (see :attr:`~treebeard.MP_Node.path` and
    :attr:`~treebeard.MP_Node.alphabet` for more info)
    """