def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
python类UserDefinedType()的实例源码
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def coerce_compared_value(self, op, value):
"""Suggest a type for a 'coerced' Python value in an expression.
Default behavior for :class:`.UserDefinedType` is the
same as that of :class:`.TypeDecorator`; by default it returns
``self``, assuming the compared value should be coerced into
the same type as this one. See
:meth:`.TypeDecorator.coerce_compared_value` for more detail.
.. versionchanged:: 0.8 :meth:`.UserDefinedType.coerce_compared_value`
now returns ``self`` by default, rather than falling onto the
more fundamental behavior of
:meth:`.TypeEngine.coerce_compared_value`.
"""
return self
def _type_affinity(self):
"""Return a rudimental 'affinity' value expressing the general class
of type."""
typ = None
for t in self.__class__.__mro__:
if t in (TypeEngine, UserDefinedType):
return typ
elif issubclass(t, (TypeEngine, UserDefinedType)):
typ = t
else:
return self.__class__
def _adapt_expression(self, op, other_comparator):
if hasattr(self.type, 'adapt_operator'):
util.warn_deprecated(
"UserDefinedType.adapt_operator is deprecated. Create "
"a UserDefinedType.Comparator subclass instead which "
"generates the desired expression constructs, given a "
"particular operator."
)
return self.type.adapt_operator(op), self.type
else:
return op, self.type
def _type_affinity(self):
"""Return a rudimental 'affinity' value expressing the general class
of type."""
typ = None
for t in self.__class__.__mro__:
if t in (TypeEngine, UserDefinedType):
return typ
elif issubclass(t, (TypeEngine, UserDefinedType)):
typ = t
else:
return self.__class__
def _adapt_expression(self, op, other_comparator):
if hasattr(self.type, 'adapt_operator'):
util.warn_deprecated(
"UserDefinedType.adapt_operator is deprecated. Create "
"a UserDefinedType.Comparator subclass instead which "
"generates the desired expression constructs, given a "
"particular operator."
)
return self.type.adapt_operator(op), self.type
else:
return op, self.type
def _type_affinity(self):
"""Return a rudimental 'affinity' value expressing the general class
of type."""
typ = None
for t in self.__class__.__mro__:
if t in (TypeEngine, UserDefinedType):
return typ
elif issubclass(t, (TypeEngine, UserDefinedType)):
typ = t
else:
return self.__class__
