class Transaction(object):
"""
Modeling-specific! API should settle into something agnostic.
"""
interface.implements(ITransaction)
def __init__(self):
self.reset()
def reset(self):
self.editingContext = EditingContext()
self.tracked = []
def track(self, *objects):
for anObject in objects:
if anObject.editingContext() is None:
self.editingContext.insertObject(anObject)
self.tracked.append(anObject)
if anObject.editingContext() is not self.editingContext:
raise ValueError, 'object already is being tracked'
if anObject.transaction() is None:
anObject.transaction = weakref.ref(self)
def forget(self, anObject):
if anObject.editingContext():
self.editingContext.forgetObject(anObject)
def search(self, aClass, qual=nullQualifier):
try:
name = aClass.__name__
except AttributeError:
# pray it's a string
name = aClass
logger.debug (name+": "+qual.value)
result = self.editingContext.fetch(name, qual.value)
for i in result:
self.track(i)
print 'ok', result
return result
def discard(self):
for i in self.tracked:
self.forget(i)
self.reset()
def save(self):
self.editingContext.saveChanges()
class Transaction(object):
"""
Modeling-specific! API should settle into something agnostic.
"""
interface.implements(ITransaction)
def __init__(self):
self.reset()
def reset(self):
self.editingContext = EditingContext()
self.tracked = []
def track(self, *objects):
for anObject in objects:
if anObject.editingContext() is None:
self.editingContext.insertObject(anObject)
self.tracked.append(anObject)
if anObject.editingContext() is not self.editingContext:
raise ValueError, 'object already is being tracked'
if anObject.transaction() is None:
anObject.transaction = weakref.ref(self)
def forget(self, anObject):
if anObject.editingContext():
self.editingContext.forgetObject(anObject)
def search(self, aClass, qual=nullQualifier):
try:
name = aClass.__name__
except AttributeError:
# pray it's a string
name = aClass
logger.debug(name + ": " + qual.value)
result = self.editingContext.fetch(name, qual.value)
for i in result:
self.track(i)
print 'ok', result
return result
def discard(self):
for i in self.tracked:
self.forget(i)
self.reset()
def save(self):
self.editingContext.saveChanges()
