Python源码示例：sqlalchemy.ext.mutable.Mutable.coerce()
示例1
def coerce(cls, key, value):
"""Given a value, coerce it into the target type.
Can be overridden by custom subclasses to coerce incoming
data into a particular type.
By default, raises ``ValueError``.
This method is called in different scenarios depending on if
the parent class is of type :class:`.Mutable` or of type
:class:`.MutableComposite`. In the case of the former, it is called
for both attribute-set operations as well as during ORM loading
operations. For the latter, it is only called during attribute-set
operations; the mechanics of the :func:`.composite` construct
handle coercion during load operations.
:param key: string name of the ORM-mapped attribute being set.
:param value: the incoming value.
:return: the method should return the coerced value, or raise
``ValueError`` if the coercion cannot be completed.
"""
if value is None:
return None
msg = "Attribute '%s' does not accept objects of type %s"
raise ValueError(msg % (key, type(value)))
示例2
def coerce(cls, key, value):
"""Convert plain dictionary to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, dict):
return cls(value)
return Mutable.coerce(key, value)
else:
return value
示例3
def coerce(cls, key, value):
"Convert plain dictionaries to MutableDict."
if not isinstance(value, MutableDict):
if isinstance(value, dict):
return MutableDict(value)
# this call will raise ValueError
return Mutable.coerce(key, value)
return value
示例4
def coerce(cls, key, value):
"""Given a value, coerce it into the target type.
Can be overridden by custom subclasses to coerce incoming
data into a particular type.
By default, raises ``ValueError``.
This method is called in different scenarios depending on if
the parent class is of type :class:`.Mutable` or of type
:class:`.MutableComposite`. In the case of the former, it is called
for both attribute-set operations as well as during ORM loading
operations. For the latter, it is only called during attribute-set
operations; the mechanics of the :func:`.composite` construct
handle coercion during load operations.
:param key: string name of the ORM-mapped attribute being set.
:param value: the incoming value.
:return: the method should return the coerced value, or raise
``ValueError`` if the coercion cannot be completed.
"""
if value is None:
return None
msg = "Attribute '%s' does not accept objects of type %s"
raise ValueError(msg % (key, type(value)))
示例5
def coerce(cls, key, value):
"""Convert plain dictionary to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, dict):
return cls(value)
return Mutable.coerce(key, value)
else:
return value
示例6
def coerce(cls, index, value):
"""Convert plain list to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, list):
return cls(value)
return Mutable.coerce(index, value)
else:
return value
示例7
def coerce(cls, key, value):
"""Given a value, coerce it into the target type.
Can be overridden by custom subclasses to coerce incoming
data into a particular type.
By default, raises ``ValueError``.
This method is called in different scenarios depending on if
the parent class is of type :class:`.Mutable` or of type
:class:`.MutableComposite`. In the case of the former, it is called
for both attribute-set operations as well as during ORM loading
operations. For the latter, it is only called during attribute-set
operations; the mechanics of the :func:`.composite` construct
handle coercion during load operations.
:param key: string name of the ORM-mapped attribute being set.
:param value: the incoming value.
:return: the method should return the coerced value, or raise
``ValueError`` if the coercion cannot be completed.
"""
if value is None:
return None
msg = "Attribute '%s' does not accept objects of type %s"
raise ValueError(msg % (key, type(value)))
示例8
def coerce(cls, key, value):
"""Convert plain dictionary to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, dict):
return cls(value)
return Mutable.coerce(key, value)
else:
return value
示例9
def coerce(cls, index, value):
"""Convert plain list to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, list):
return cls(value)
return Mutable.coerce(index, value)
else:
return value
示例10
def coerce(cls, index, value):
"""Convert plain set to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, set):
return cls(value)
return Mutable.coerce(index, value)
else:
return value
示例11
def coerce(cls, key, value):
"""Given a value, coerce it into the target type.
Can be overridden by custom subclasses to coerce incoming
data into a particular type.
By default, raises ``ValueError``.
This method is called in different scenarios depending on if
the parent class is of type :class:`.Mutable` or of type
:class:`.MutableComposite`. In the case of the former, it is called
for both attribute-set operations as well as during ORM loading
operations. For the latter, it is only called during attribute-set
operations; the mechanics of the :func:`.composite` construct
handle coercion during load operations.
:param key: string name of the ORM-mapped attribute being set.
:param value: the incoming value.
:return: the method should return the coerced value, or raise
``ValueError`` if the coercion cannot be completed.
"""
if value is None:
return None
msg = "Attribute '%s' does not accept objects of type %s"
raise ValueError(msg % (key, type(value)))
示例12
def coerce(cls, key, value):
"""Convert plain dictionary to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, dict):
return cls(value)
return Mutable.coerce(key, value)
else:
return value
示例13
def coerce(cls, index, value):
"""Convert plain list to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, list):
return cls(value)
return Mutable.coerce(index, value)
else:
return value
示例14
def coerce(cls, index, value):
"""Convert plain set to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, set):
return cls(value)
return Mutable.coerce(index, value)
else:
return value
示例15
def coerce(cls, key, value):
"Convert plain dictionaries to MutableDict."
if not isinstance(value, MutableDict):
if isinstance(value, dict):
return MutableDict(value)
# this call will raise ValueError
return Mutable.coerce(key, value)
else:
return value
示例16
def coerce(cls, key, value):
"""Given a value, coerce it into the target type.
Can be overridden by custom subclasses to coerce incoming
data into a particular type.
By default, raises ``ValueError``.
This method is called in different scenarios depending on if
the parent class is of type :class:`.Mutable` or of type
:class:`.MutableComposite`. In the case of the former, it is called
for both attribute-set operations as well as during ORM loading
operations. For the latter, it is only called during attribute-set
operations; the mechanics of the :func:`.composite` construct
handle coercion during load operations.
:param key: string name of the ORM-mapped attribute being set.
:param value: the incoming value.
:return: the method should return the coerced value, or raise
``ValueError`` if the coercion cannot be completed.
"""
if value is None:
return None
msg = "Attribute '%s' does not accept objects of type %s"
raise ValueError(msg % (key, type(value)))
示例17
def coerce(cls, key, value):
"""Convert plain dictionary to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, dict):
return cls(value)
return Mutable.coerce(key, value)
else:
return value
示例18
def coerce(cls, key, value):
"""Given a value, coerce it into the target type.
Can be overridden by custom subclasses to coerce incoming
data into a particular type.
By default, raises ``ValueError``.
This method is called in different scenarios depending on if
the parent class is of type :class:`.Mutable` or of type
:class:`.MutableComposite`. In the case of the former, it is called
for both attribute-set operations as well as during ORM loading
operations. For the latter, it is only called during attribute-set
operations; the mechanics of the :func:`.composite` construct
handle coercion during load operations.
:param key: string name of the ORM-mapped attribute being set.
:param value: the incoming value.
:return: the method should return the coerced value, or raise
``ValueError`` if the coercion cannot be completed.
"""
if value is None:
return None
msg = "Attribute '%s' does not accept objects of type %s"
raise ValueError(msg % (key, type(value)))
示例19
def coerce(cls, key, value):
"""Convert plain dictionary to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, dict):
return cls(value)
return Mutable.coerce(key, value)
else:
return value
示例20
def coerce(cls, index, value):
"""Convert plain list to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, list):
return cls(value)
return Mutable.coerce(index, value)
else:
return value
示例21
def coerce(cls, index, value):
"""Convert plain set to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, set):
return cls(value)
return Mutable.coerce(index, value)
else:
return value
示例22
def coerce(cls, key, value):
"""Given a value, coerce it into the target type.
Can be overridden by custom subclasses to coerce incoming
data into a particular type.
By default, raises ``ValueError``.
This method is called in different scenarios depending on if
the parent class is of type :class:`.Mutable` or of type
:class:`.MutableComposite`. In the case of the former, it is called
for both attribute-set operations as well as during ORM loading
operations. For the latter, it is only called during attribute-set
operations; the mechanics of the :func:`.composite` construct
handle coercion during load operations.
:param key: string name of the ORM-mapped attribute being set.
:param value: the incoming value.
:return: the method should return the coerced value, or raise
``ValueError`` if the coercion cannot be completed.
"""
if value is None:
return None
msg = "Attribute '%s' does not accept objects of type %s"
raise ValueError(msg % (key, type(value)))
示例23
def coerce(cls, key, value):
"""Convert plain dictionary to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, dict):
return cls(value)
return Mutable.coerce(key, value)
else:
return value
示例24
def coerce(cls, index, value):
"""Convert plain list to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, list):
return cls(value)
return Mutable.coerce(index, value)
else:
return value
示例25
def coerce(cls, index, value):
"""Convert plain set to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, set):
return cls(value)
return Mutable.coerce(index, value)
else:
return value
示例26
def coerce(cls, key, value):
"""Given a value, coerce it into the target type.
Can be overridden by custom subclasses to coerce incoming
data into a particular type.
By default, raises ``ValueError``.
This method is called in different scenarios depending on if
the parent class is of type :class:`.Mutable` or of type
:class:`.MutableComposite`. In the case of the former, it is called
for both attribute-set operations as well as during ORM loading
operations. For the latter, it is only called during attribute-set
operations; the mechanics of the :func:`.composite` construct
handle coercion during load operations.
:param key: string name of the ORM-mapped attribute being set.
:param value: the incoming value.
:return: the method should return the coerced value, or raise
``ValueError`` if the coercion cannot be completed.
"""
if value is None:
return None
msg = "Attribute '%s' does not accept objects of type %s"
raise ValueError(msg % (key, type(value)))
示例27
def coerce(cls, key, value):
"""Convert plain dictionary to MutableDict."""
if not isinstance(value, MutableDict):
if isinstance(value, dict):
return MutableDict(value)
return Mutable.coerce(key, value)
else:
return value
示例28
def coerce(cls, key, value):
"""Given a value, coerce it into the target type.
Can be overridden by custom subclasses to coerce incoming
data into a particular type.
By default, raises ``ValueError``.
This method is called in different scenarios depending on if
the parent class is of type :class:`.Mutable` or of type
:class:`.MutableComposite`. In the case of the former, it is called
for both attribute-set operations as well as during ORM loading
operations. For the latter, it is only called during attribute-set
operations; the mechanics of the :func:`.composite` construct
handle coercion during load operations.
:param key: string name of the ORM-mapped attribute being set.
:param value: the incoming value.
:return: the method should return the coerced value, or raise
``ValueError`` if the coercion cannot be completed.
"""
if value is None:
return None
msg = "Attribute '%s' does not accept objects of type %s"
raise ValueError(msg % (key, type(value)))
示例29
def coerce(cls, key, value):
"""Convert plain dictionary to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, dict):
return cls(value)
return Mutable.coerce(key, value)
else:
return value
示例30
def coerce(cls, index, value):
"""Convert plain list to instance of this class."""
if not isinstance(value, cls):
if isinstance(value, list):
return cls(value)
return Mutable.coerce(index, value)
else:
return value
