def derive_dummy_ptr(
ptr: s_pointers.Pointer,
*,
ctx: context.ContextLevel,
) -> s_pointers.Pointer:
stdobj = cast(s_objtypes.ObjectType, ctx.env.schema.get('std::Object'))
derived_obj_name = stdobj.get_derived_name(ctx.env.schema,
stdobj,
module='__derived__')
derived_obj = ctx.env.schema.get(derived_obj_name, None)
if derived_obj is None:
ctx.env.schema, derived_obj = stdobj.derive_subtype(
ctx.env.schema, name=derived_obj_name)
ctx.env.created_schema_objects.add(derived_obj)
derived_name = ptr.get_derived_name(ctx.env.schema, derived_obj)
derived: s_pointers.Pointer
derived = cast(s_pointers.Pointer, ctx.env.schema.get(derived_name, None))
if derived is None:
ctx.env.schema, derived = ptr.derive_ref(ctx.env.schema,
derived_obj,
derived_obj,
attrs={
'cardinality':
qltypes.Cardinality.MANY,
},
name=derived_name,
mark_derived=True)
ctx.env.created_schema_objects.add(derived)
return derived
def derive_ptr(ptr: s_pointers.Pointer,
source: s_sources.Source,
target: Optional[s_types.Type] = None,
*qualifiers: str,
derived_name: Optional[sn.SchemaName] = None,
derived_name_quals: Optional[Sequence[str]] = (),
derived_name_base: Optional[str] = None,
preserve_shape: bool = False,
preserve_path_id: bool = False,
is_insert: bool = False,
is_update: bool = False,
inheritance_merge: bool = True,
attrs: Optional[Dict[str, Any]] = None,
ctx: context.ContextLevel) -> s_pointers.Pointer:
if derived_name is None and ctx.derived_target_module:
derived_name = derive_view_name(stype=ptr,
derived_name_quals=derived_name_quals,
derived_name_base=derived_name_base,
ctx=ctx)
if ptr.get_name(ctx.env.schema) == derived_name:
qualifiers = qualifiers + (ctx.aliases.get('d'), )
ctx.env.schema, derived = ptr.derive_ref(
ctx.env.schema,
source,
*qualifiers,
target=target,
name=derived_name,
inheritance_merge=inheritance_merge,
inheritance_refdicts={'pointers'},
mark_derived=True,
transient=True,
preserve_path_id=preserve_path_id,
attrs=attrs)
if not ptr.generic(ctx.env.schema):
if isinstance(derived, s_sources.Source):
ptr = cast(s_links.Link, ptr)
scls_pointers = ptr.get_pointers(ctx.env.schema)
derived_own_pointers = derived.get_pointers(ctx.env.schema)
for pn, ptr in derived_own_pointers.items(ctx.env.schema):
# This is a view of a view. Make sure query-level
# computable expressions for pointers are carried over.
src_ptr = scls_pointers.get(ctx.env.schema, pn)
# mypy somehow loses the type argument in the
# "pointers" ObjectIndex.
assert isinstance(src_ptr, s_pointers.Pointer)
computable_data = ctx.source_map.get(src_ptr)
if computable_data is not None:
ctx.source_map[ptr] = computable_data
if preserve_shape and ptr in ctx.env.view_shapes:
ctx.env.view_shapes[derived] = ctx.env.view_shapes[ptr]
ctx.env.created_schema_objects.add(derived)
return derived
def derive_ptr(ptr: s_pointers.Pointer,
source: s_sources.Source,
target: typing.Optional[s_types.Type] = None,
*qualifiers,
derived_name: typing.Optional[sn.SchemaName] = None,
derived_name_quals: typing.Optional[typing.Sequence[str]] = (),
derived_name_base: typing.Optional[str] = None,
preserve_shape: bool = False,
preserve_path_id: bool = False,
is_insert: bool = False,
is_update: bool = False,
inheritance_merge: bool = True,
attrs: typing.Optional[dict] = None,
ctx: context.ContextLevel) -> s_pointers.Pointer:
if derived_name is None and ctx.derived_target_module:
derived_name = derive_view_name(stype=ptr,
derived_name_quals=derived_name_quals,
derived_name_base=derived_name_base,
ctx=ctx)
if ptr.get_name(ctx.env.schema) == derived_name:
qualifiers = qualifiers + (ctx.aliases.get('d'), )
ctx.env.schema, derived = ptr.derive_ref(
ctx.env.schema,
source,
target,
*qualifiers,
name=derived_name,
inheritance_merge=inheritance_merge,
refdict_whitelist={'pointers'},
mark_derived=True,
preserve_path_id=preserve_path_id,
attrs=attrs)
if not ptr.generic(ctx.env.schema):
if isinstance(derived, s_sources.Source):
ptr = typing.cast(s_links.Link, ptr)
scls_pointers = ptr.get_pointers(ctx.env.schema)
derived_own_pointers = derived.get_pointers(ctx.env.schema)
for pn, ptr in derived_own_pointers.items(ctx.env.schema):
# This is a view of a view. Make sure query-level
# computable expressions for pointers are carried over.
src_ptr = scls_pointers.get(ctx.env.schema, pn)
computable_data = ctx.source_map.get(src_ptr)
if computable_data is not None:
ctx.source_map[ptr] = computable_data
if preserve_shape and ptr in ctx.env.view_shapes:
ctx.env.view_shapes[derived] = ctx.env.view_shapes[ptr]
return derived
def derive_dummy_ptr(
ptr: s_pointers.Pointer,
*,
ctx: context.ContextLevel,
) -> s_pointers.Pointer:
stdobj = ctx.env.schema.get('std::BaseObject', type=s_objtypes.ObjectType)
derived_obj_name = stdobj.get_derived_name(ctx.env.schema,
stdobj,
module='__derived__')
derived_obj = ctx.env.schema.get(derived_obj_name,
None,
type=s_obj.QualifiedObject)
if derived_obj is None:
ctx.env.schema, derived_obj = stdobj.derive_subtype(
ctx.env.schema, name=derived_obj_name)
ctx.env.created_schema_objects.add(derived_obj)
derived_name = ptr.get_derived_name(ctx.env.schema, derived_obj)
derived: s_pointers.Pointer
derived = cast(s_pointers.Pointer, ctx.env.schema.get(derived_name, None))
if derived is None:
ctx.env.schema, derived = ptr.derive_ref(
ctx.env.schema,
derived_obj,
target=derived_obj,
attrs={
'cardinality': qltypes.SchemaCardinality.One,
},
name=derived_name,
mark_derived=True,
transient=True,
)
ctx.env.created_schema_objects.add(derived)
return derived