def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL CHANGE/MODIFY COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
python类to_instance()的实例源码
def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL ALTER COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL CHANGE/MODIFY COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL CHANGE/MODIFY COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL ALTER COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL CHANGE/MODIFY COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL CHANGE/MODIFY COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL CHANGE/MODIFY COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL CHANGE/MODIFY COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL CHANGE/MODIFY COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL CHANGE/MODIFY COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
newname=None,
type_=None,
nullable=None,
default=False,
autoincrement=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.nullable = nullable
self.newname = newname
self.default = default
self.autoincrement = autoincrement
if type_ is None:
raise util.CommandError(
"All MySQL CHANGE/MODIFY COLUMN operations "
"require the existing type."
)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
existing_type=None,
existing_nullable=None,
existing_server_default=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.existing_type = sqltypes.to_instance(existing_type) \
if existing_type is not None else None
self.existing_nullable = existing_nullable
self.existing_server_default = existing_server_default
def __init__(self, name, column_name, type_, **kw):
super(ColumnType, self).__init__(name, column_name,
**kw)
self.type_ = sqltypes.to_instance(type_)
def alter_column(self, table_name, column_name,
nullable=None,
server_default=False,
name=None,
type_=None,
autoincrement=None,
**kw
):
existing = self.columns[column_name]
existing_transfer = self.column_transfers[column_name]
if name is not None and name != column_name:
# note that we don't change '.key' - we keep referring
# to the renamed column by its old key in _create(). neat!
existing.name = name
existing_transfer["name"] = name
if type_ is not None:
type_ = sqltypes.to_instance(type_)
# old type is being discarded so turn off eventing
# rules. Alternatively we can
# erase the events set up by this type, but this is simpler.
# we also ignore the drop_constraint that will come here from
# Operations.implementation_for(alter_column)
if isinstance(existing.type, SchemaEventTarget):
existing.type._create_events = \
existing.type.create_constraint = False
existing.type = type_
# we *dont* however set events for the new type, because
# alter_column is invoked from
# Operations.implementation_for(alter_column) which already
# will emit an add_constraint()
existing_transfer["expr"] = cast(existing_transfer["expr"], type_)
if nullable is not None:
existing.nullable = nullable
if server_default is not False:
sql_schema.DefaultClause(server_default)._set_parent(existing)
if autoincrement is not None:
existing.autoincrement = bool(autoincrement)
def __init__(self, name, column_name, schema=None,
existing_type=None,
existing_nullable=None,
existing_server_default=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.existing_type=sqltypes.to_instance(existing_type) \
if existing_type is not None else None
self.existing_nullable=existing_nullable
self.existing_server_default=existing_server_default
def __init__(self, name, column_name, type_, **kw):
super(ColumnType, self).__init__(name, column_name,
**kw)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
existing_type=None,
existing_nullable=None,
existing_server_default=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.existing_type = sqltypes.to_instance(existing_type) \
if existing_type is not None else None
self.existing_nullable = existing_nullable
self.existing_server_default = existing_server_default
def __init__(self, name, column_name, type_, **kw):
super(ColumnType, self).__init__(name, column_name,
**kw)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, type_, **kw):
using = kw.pop('using', None)
super(PostgresqlColumnType, self).__init__(name, column_name, **kw)
self.type_ = sqltypes.to_instance(type_)
self.using = using
def __init__(self, name, column_name, schema=None,
existing_type=None,
existing_nullable=None,
existing_server_default=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.existing_type = sqltypes.to_instance(existing_type) \
if existing_type is not None else None
self.existing_nullable = existing_nullable
self.existing_server_default = existing_server_default
def __init__(self, name, column_name, type_, **kw):
super(ColumnType, self).__init__(name, column_name,
**kw)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
existing_type=None,
existing_nullable=None,
existing_server_default=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.existing_type=sqltypes.to_instance(existing_type) \
if existing_type is not None else None
self.existing_nullable=existing_nullable
self.existing_server_default=existing_server_default
def __init__(self, name, column_name, type_, **kw):
super(ColumnType, self).__init__(name, column_name,
**kw)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, type_, **kw):
using = kw.pop('using', None)
super(PostgresqlColumnType, self).__init__(name, column_name, **kw)
self.type_ = sqltypes.to_instance(type_)
self.using = using
def __init__(self, name, column_name, schema=None,
existing_type=None,
existing_nullable=None,
existing_server_default=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.existing_type = sqltypes.to_instance(existing_type) \
if existing_type is not None else None
self.existing_nullable = existing_nullable
self.existing_server_default = existing_server_default
def __init__(self, name, column_name, type_, **kw):
super(ColumnType, self).__init__(name, column_name,
**kw)
self.type_ = sqltypes.to_instance(type_)
def __init__(self, name, column_name, schema=None,
existing_type=None,
existing_nullable=None,
existing_server_default=None):
super(AlterColumn, self).__init__(name, schema=schema)
self.column_name = column_name
self.existing_type = sqltypes.to_instance(existing_type) \
if existing_type is not None else None
self.existing_nullable = existing_nullable
self.existing_server_default = existing_server_default
def __init__(self, name, column_name, type_, **kw):
super(ColumnType, self).__init__(name, column_name,
**kw)
self.type_ = sqltypes.to_instance(type_)
def alter_column(self, table_name, column_name,
nullable=None,
server_default=False,
name=None,
type_=None,
autoincrement=None,
**kw
):
existing = self.columns[column_name]
existing_transfer = self.column_transfers[column_name]
if name is not None and name != column_name:
# note that we don't change '.key' - we keep referring
# to the renamed column by its old key in _create(). neat!
existing.name = name
existing_transfer["name"] = name
if type_ is not None:
type_ = sqltypes.to_instance(type_)
existing.type = type_
existing_transfer["expr"] = cast(existing_transfer["expr"], type_)
if nullable is not None:
existing.nullable = nullable
if server_default is not False:
existing.server_default = server_default
if autoincrement is not None:
existing.autoincrement = bool(autoincrement)
