def children(self, filter=Filter()):
"""
Get only the I{direct} or non-attribute content.
@param filter: A filter to constrain the result.
@type filter: L{Filter}
@return: A list tuples: (child, ancestry)
@rtype: [(L{SchemaObject}, [L{SchemaObject},..]),..]
"""
result = []
for child, ancestry in self:
if not child.isattr() and child in filter:
result.append((child, ancestry))
return result
def append(cls, d, s, filter=Filter()):
"""
Append schema object's from B{s}ource list to
the B{d}estination list while applying the filter.
@param d: The destination list.
@type d: list
@param s: The source list.
@type s: list
@param filter: A filter that allows items to be appended.
@type filter: L{Filter}
"""
for item in s:
if item in filter:
d.append(item)
def prepend(cls, d, s, filter=Filter()):
"""
Prepend schema object's from B{s}ource list to
the B{d}estination list while applying the filter.
@param d: The destination list.
@type d: list
@param s: The source list.
@type s: list
@param filter: A filter that allows items to be prepended.
@type filter: L{Filter}
"""
i = 0
for x in s:
if x in filter:
d.insert(i, x)
i += 1
def content(self, collection=None, filter=Filter(), history=None):
"""
Get a I{flattened} list of this nodes contents.
@param collection: A list to fill.
@type collection: list
@param filter: A filter used to constrain the result.
@type filter: L{Filter}
@param history: The history list used to prevent cyclic dependency.
@type history: list
@return: The filled list.
@rtype: list
"""
if collection is None:
collection = []
if history is None:
history = []
if self in history:
return collection
history.append(self)
if self in filter:
collection.append(self)
for c in self.rawchildren:
c.content(collection, filter, history[:])
return collection
def merge(self, other):
SchemaObject.merge(self, other)
filter = Filter(False, self.rawchildren)
self.prepend(self.rawchildren, other.rawchildren, filter)