예제 #1
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def getParent(obj):
    """
    Returns the container the object was traversed via.

    See `ITraversalAPI` for details.
    """
    try:
        location_info = ILocationInfo(obj)
    except TypeError:
        pass
    else:
        return location_info.getParent()

    # XXX Keep the old implementation as the fallback behaviour in the case
    # that obj doesn't have a location parent. This seems advisable as the
    # 'parent' is sometimes taken to mean the traversal parent, and the
    # __parent__ attribute is used for both.

    if IRoot.providedBy(obj):
        return None

    parent = getattr(obj, '__parent__', None)
    if parent is not None:
        return parent

    raise TypeError("Not enough context information to get parent", obj)
예제 #2
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def getParent(obj):
    """Returns the container the object was traversed via.

    Returns None if the object is a containment root.
    Raises TypeError if the object doesn't have enough context to get the
    parent.
    """
    try:
        location_info = ILocationInfo(obj)
    except TypeError:
        pass
    else:
        return location_info.getParent()

    # XXX Keep the old implementation as the fallback behaviour in the case
    # that obj doesn't have a location parent. This seems advisable as the
    # 'parent' is sometimes taken to mean the traversal parent, and the
    # __parent__ attribute is used for both.

    if IRoot.providedBy(obj):
        return None

    parent = getattr(obj, '__parent__', None)
    if parent is not None:
        return parent

    raise TypeError("Not enough context information to get parent", obj)
예제 #3
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    def getRoot(self):
        """Get the root location for a location.

        See ILocationInfo

        The root location is a location that contains the given
        location and that implements IContainmentRoot.

        >>> root = Location()
        >>> zope.interface.directlyProvides(root, IRoot)
        >>> LocationPhysicallyLocatable(root).getRoot() is root
        True

        >>> o1 = Location(); o1.__parent__ = root
        >>> LocationPhysicallyLocatable(o1).getRoot() is root
        True

        >>> o2 = Location(); o2.__parent__ = o1
        >>> LocationPhysicallyLocatable(o2).getRoot() is root
        True

        We'll get a TypeError if we try to get the location fo a
        rootless object:

        >>> o1.__parent__ = None
        >>> LocationPhysicallyLocatable(o1).getRoot()
        Traceback (most recent call last):
        ...
        TypeError: Not enough context to determine location root
        >>> LocationPhysicallyLocatable(o2).getRoot()
        Traceback (most recent call last):
        ...
        TypeError: Not enough context to determine location root

        If we screw up and create a location cycle, it will be caught:

        >>> o1.__parent__ = o2
        >>> LocationPhysicallyLocatable(o1).getRoot()
        Traceback (most recent call last):
        ...
        TypeError: Maximum location depth exceeded, """ \
                """probably due to a a location cycle.
        """
        context = self.context
        max = 9999
        while context is not None:
            if IRoot.providedBy(context):
                return context
            context = context.__parent__
            max -= 1
            if max < 1:
                raise TypeError("Maximum location depth exceeded, "
                                "probably due to a a location cycle.")

        raise TypeError("Not enough context to determine location root")
예제 #4
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    def getRoot(self):
        """See ILocationInfo.
        """
        context = self.context
        max = 9999
        while context is not None:
            if IRoot.providedBy(context):
                return context
            context = context.__parent__
            max -= 1
            if max < 1:
                raise TypeError("Maximum location depth exceeded, "
                                "probably due to a a location cycle.")

        raise TypeError("Not enough context to determine location root")
예제 #5
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    def getRoot(self):
        """See ILocationInfo.
        """
        context = self.context
        max = 9999
        while context is not None:
            if IRoot.providedBy(context):
                return context
            context = context.__parent__
            max -= 1
            if max < 1:
                raise TypeError("Maximum location depth exceeded, "
                                "probably due to a a location cycle.")

        raise TypeError("Not enough context to determine location root")
예제 #6
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    def getParents(self):
        """See ILocationInfo.
        """
        # XXX Merge this implementation with getPath. This was refactored
        # from zope.traversing.
        parents = []
        w = self.context
        while 1:
            w = getattr(w, '__parent__', None)
            if w is None:
                break
            parents.append(w)

        if parents and IRoot.providedBy(parents[-1]):
            return parents

        raise TypeError("Not enough context information to get all parents")
예제 #7
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    def getParents(self):
        """See ILocationInfo.
        """
        # XXX Merge this implementation with getPath. This was refactored
        # from zope.traversing.
        parents = []
        w = self.context
        while 1:
            w = getattr(w, '__parent__', None)
            if w is None:
                break
            parents.append(w)

        if parents and IRoot.providedBy(parents[-1]):
            return parents

        raise TypeError("Not enough context information to get all parents")
예제 #8
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파일: utils.py 프로젝트: CGTIC/Plone_SP
def get_parent(obj, default=_marker):
    """Returns the container the object was traversed via.

    Returns None if the object is a containment root.
    Raises TypeError if the object doesn't have enough context to get the
    parent.
    """
    if IRoot.providedBy(obj):
        return None

    parent = aq_parent(aq_inner(obj))
    if parent is not None:
        return parent

    if default != _marker:
        return default

    raise TypeError("Not enough context information to get parent", obj)
예제 #9
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    def getPath(self):
        """See ILocationInfo.
        """
        path = []
        context = self.context
        max = 9999
        while context is not None:
            if IRoot.providedBy(context):
                if path:
                    path.append('')
                    path.reverse()
                    return u'/'.join(path)
                return u'/'
            path.append(context.__name__)
            context = context.__parent__
            max -= 1
            if max < 1:
                raise TypeError("Maximum location depth exceeded, "
                                "probably due to a a location cycle.")

        raise TypeError("Not enough context to determine location root")
예제 #10
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    def getPath(self):
        """See ILocationInfo.
        """
        path = []
        context = self.context
        max = 9999
        while context is not None:
            if IRoot.providedBy(context):
                if path:
                    path.append('')
                    path.reverse()
                    return u'/'.join(path)
                return u'/'
            path.append(context.__name__)
            context = context.__parent__
            max -= 1
            if max < 1:
                raise TypeError("Maximum location depth exceeded, "
                                "probably due to a a location cycle.")

        raise TypeError("Not enough context to determine location root")
예제 #11
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    def getParents(self):
        """Returns a list starting with the object's parent followed by
        each of its parents.

        Raises a TypeError if the object is not connected to a containment
        root.

        >>> root = Location()
        >>> zope.interface.directlyProvides(root, IRoot)
        >>> o1 = Location()
        >>> o2 = Location()
        >>> o1.__parent__ = root
        >>> o2.__parent__ = o1
        >>> LocationPhysicallyLocatable(o2).getParents() == [o1, root]
        True
        
        If the last parent is not an IRoot object, TypeError will be
        raised as statet before.
        
        >>> zope.interface.noLongerProvides(root, IRoot)
        >>> LocationPhysicallyLocatable(o2).getParents()
        Traceback (most recent call last):
        ...
        TypeError: Not enough context information to get all parents

        """
        # XXX Merge this implementation with getPath. This was refactored
        # from zope.traversing.
        parents = []
        w = self.context
        while 1:
            w = w.__parent__
            if w is None:
                break
            parents.append(w)

        if parents and IRoot.providedBy(parents[-1]):
            return parents

        raise TypeError("Not enough context information to get all parents")
예제 #12
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    def getPath(self):
        """Get the path of a location.

        See ILocationInfo

        This is an "absolute path", rooted at a root object.

        >>> root = Location()
        >>> zope.interface.directlyProvides(root, IRoot)
        >>> LocationPhysicallyLocatable(root).getPath()
        u'/'

        >>> o1 = Location(); o1.__parent__ = root; o1.__name__ = 'o1'
        >>> LocationPhysicallyLocatable(o1).getPath()
        u'/o1'

        >>> o2 = Location(); o2.__parent__ = o1; o2.__name__ = u'o2'
        >>> LocationPhysicallyLocatable(o2).getPath()
        u'/o1/o2'

        It is an error to get the path of a rootless location:

        >>> o1.__parent__ = None
        >>> LocationPhysicallyLocatable(o1).getPath()
        Traceback (most recent call last):
        ...
        TypeError: Not enough context to determine location root

        >>> LocationPhysicallyLocatable(o2).getPath()
        Traceback (most recent call last):
        ...
        TypeError: Not enough context to determine location root

        If we screw up and create a location cycle, it will be caught:

        >>> o1.__parent__ = o2
        >>> LocationPhysicallyLocatable(o1).getPath()
        Traceback (most recent call last):
        ...
        TypeError: Maximum location depth exceeded, """ \
                """probably due to a a location cycle.

        """

        path = []
        context = self.context
        max = 9999
        while context is not None:
            if IRoot.providedBy(context):
                if path:
                    path.append('')
                    path.reverse()
                    return u'/'.join(path)
                else:
                    return u'/'
            path.append(context.__name__)
            context = context.__parent__
            max -= 1
            if max < 1:
                raise TypeError("Maximum location depth exceeded, "
                                "probably due to a a location cycle.")

        raise TypeError("Not enough context to determine location root")