36 lines
936 B
Python
36 lines
936 B
Python
class Dispatcher(object):
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namespace = "dispatcher"
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def __init__(self, namespace=None):
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self._registry_ = {}
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if namespace:
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self.namespace = namespace
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def register_for(self, target):
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def wrap(dispatch_class):
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self._registry_[target] = dispatch_class
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return dispatch_class
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return wrap
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def get_for(self, obj):
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targets = type(obj).__mro__
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for target in targets:
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if target in self._registry_:
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return self._registry_[target](obj)
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else:
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raise ValueError(
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"no %s found for object: %s" % (self.namespace, obj))
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class Cursor(object):
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def __init__(self, connection):
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self.connection = connection
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self.cursor = connection.cursor()
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self.release()
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def lock(self):
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self.available = False
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def release(self):
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self.available = True
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