def _apply_field_ast(
self,
schema: s_schema.Schema,
context: sd.CommandContext,
node: qlast.DDLOperation,
op: sd.AlterObjectProperty,
) -> None:
objtype = self.get_referrer_context(context)
if op.property == 'required':
# Due to how SDL is processed the underlying AST may be an
# AlterConcreteLink, which requires different handling.
if isinstance(node, qlast.CreateConcreteLink):
assert isinstance(op.new_value, bool)
node.is_required = op.new_value
else:
node.commands.append(
qlast.SetSpecialField(
name='required',
value=op.new_value,
)
)
elif op.property == 'cardinality':
node.cardinality = op.new_value
elif op.property == 'target' and objtype:
# Due to how SDL is processed the underlying AST may be an
# AlterConcreteLink, which requires different handling.
if isinstance(node, qlast.CreateConcreteLink):
if not node.target:
expr = self.get_attribute_value('expr')
if expr is not None:
node.target = expr.qlast
else:
t = op.new_value
assert isinstance(t, (so.Object, so.ObjectShell))
node.target = utils.typeref_to_ast(schema, t)
else:
assert isinstance(op.new_value, (so.Object, so.ObjectShell))
node.commands.append(
qlast.SetLinkType(
type=utils.typeref_to_ast(schema, op.new_value)
)
)
elif op.property == 'on_target_delete':
node.commands.append(qlast.OnTargetDelete(cascade=op.new_value))
else:
super()._apply_field_ast(schema, context, node, op)
def _apply_field_ast(
self,
schema: s_schema.Schema,
context: sd.CommandContext,
node: qlast.DDLOperation,
op: sd.AlterObjectProperty,
) -> None:
# type ignore below, because the class is used as mixin
link = context.get(PropertySourceContext) # type: ignore
if op.property == 'required':
if isinstance(node, qlast.CreateConcreteProperty):
node.is_required = bool(op.new_value)
else:
node.commands.append(
qlast.SetSpecialField(
name='required',
value=op.new_value,
),
)
elif op.property == 'cardinality':
node.cardinality = op.new_value
elif op.property == 'target' and link:
if isinstance(node, qlast.CreateConcreteProperty):
expr = self.get_attribute_value('expr')
if expr is not None:
node.target = expr.qlast
else:
ref = op.new_value
assert isinstance(ref, (so.Object, so.ObjectShell))
node.target = utils.typeref_to_ast(schema, ref)
else:
ref = op.new_value
assert isinstance(ref, (so.Object, so.ObjectShell))
node.commands.append(
qlast.SetPropertyType(
type=utils.typeref_to_ast(schema, ref)
)
)
else:
super()._apply_field_ast(schema, context, node, op)