def _validate_enum_change(
self,
stype: s_types.Type,
cur_labels: Sequence[str],
new_labels: Sequence[str],
schema: s_schema.Schema,
context: sd.CommandContext,
) -> s_schema.Schema:
new_set = set(new_labels)
if len(new_set) != len(new_labels):
raise errors.SchemaError(f'enums cannot contain duplicate values')
cur_set = set(cur_labels)
if cur_set - new_set:
raise errors.SchemaError(
f'cannot remove labels from an enumeration type')
for cur_label, new_label in zip(cur_labels, new_labels):
if cur_label != new_label:
raise errors.SchemaError(
f'cannot change the existing labels in an enumeration '
f'type, only appending new labels is allowed')
self.set_attribute_value('enum_values', new_labels)
schema = stype.set_field_value(schema, 'enum_values', new_labels)
return schema
async def read_indexes(self, schema, only_modules, exclude_modules):
pg_index_data = await introspection.tables.fetch_indexes(
self.connection, schema_pattern='edgedb%', index_pattern='%_index')
pg_indexes = set()
for row in pg_index_data:
table_name = tuple(row['table_name'])
for pg_index in self.interpret_indexes(table_name, row['indexes']):
pg_indexes.add(
(table_name, pg_index.get_metadata('schemaname')))
ds = datasources.schema.indexes
indexes = await ds.fetch(self.connection,
modules=only_modules,
exclude_modules=exclude_modules)
basemap = {}
for index_data in indexes:
subj = schema.get(index_data['subject_name'])
subj_table_name = common.get_backend_name(schema,
subj,
catenate=False)
index_name = sn.Name(index_data['name'])
if index_data['is_local']:
try:
pg_indexes.remove((subj_table_name, index_name))
except KeyError:
raise errors.SchemaError(
'internal metadata inconsistency',
details=(
f'Index {index_name} is defined in schema, but '
f'the corresponding PostgreSQL index is missing.'
)) from None
schema, index = s_indexes.Index.create_in_schema(
schema,
id=index_data['id'],
name=index_name,
subject=subj,
is_local=index_data['is_local'],
inherited_fields=self._unpack_inherited_fields(
index_data['inherited_fields']),
expr=self.unpack_expr(index_data['expr'], schema))
schema = subj.add_index(schema, index)
basemap[index] = (index_data['bases'], index_data['ancestors'])
for scls, (basenames, ancestors) in basemap.items():
schema = self._set_reflist(schema, scls, 'bases', basenames)
schema = self._set_reflist(schema, scls, 'ancestors', ancestors)
if pg_indexes and not only_modules and not exclude_modules:
details = f'Extraneous PostgreSQL indexes found: {pg_indexes!r}'
raise errors.SchemaError('internal metadata inconsistency',
details=details)
return schema
def _validate_enum_change(
self,
stype: s_types.Type,
cur_labels: Sequence[str],
new_labels: Sequence[str],
schema: s_schema.Schema,
context: sd.CommandContext,
) -> s_schema.Schema:
if len(set(new_labels)) != len(new_labels):
raise errors.SchemaError(
f'enum labels are not unique')
cur_set = set(cur_labels)
if cur_set - set(new_labels):
raise errors.SchemaError(
f'cannot remove labels from an enumeration type')
existing = [label for label in new_labels if label in cur_set]
if existing != cur_labels:
raise errors.SchemaError(
f'cannot change the relative order of existing labels '
f'in an enumeration type')
self.set_attribute_value('enum_values', new_labels)
schema = stype.set_field_value(schema, 'enum_values', new_labels)
return schema
def apply(self, schema, context):
scls = self.get_object(schema, context)
self.scls = scls
enum_values = scls.get_enum_values(schema)
if enum_values:
raise errors.UnsupportedFeatureError(
f'altering enum composition is not supported')
if self.removed_bases and not self.added_bases:
raise errors.SchemaError(f'cannot DROP EXTENDING enum')
all_bases = []
for bases, pos in self.added_bases:
if pos:
raise errors.SchemaError(
f'cannot add another enum as supertype '
f'use EXTENDING without position qualification')
all_bases.extend(bases)
if len(all_bases) > 1:
raise errors.SchemaError(
f'cannot set more than one enum as supertype ')
new_base = all_bases[0]
new_values = new_base.elements
schema = self._validate_enum_change(scls, enum_values, new_values,
schema, context)
return schema, scls
else:
return super().apply(self, schema, context)
def apply(
self,
schema: s_schema.Schema,
context: sd.CommandContext,
) -> s_schema.Schema:
scls = self.get_object(schema, context)
self.scls = scls
assert isinstance(scls, ScalarType)
cur_labels = scls.get_enum_values(schema)
if cur_labels:
if self.removed_bases and not self.added_bases:
raise errors.SchemaError(
f'cannot DROP EXTENDING enum')
all_bases = []
for bases, pos in self.added_bases:
# Check that there aren't any non-enum bases.
for base in bases:
if isinstance(base, AnonymousEnumTypeShell):
is_enum_base = True
elif isinstance(base, s_types.TypeShell):
is_enum_base = base.resolve(schema).is_enum(schema)
else:
is_enum_base = base.is_enum(schema)
if not is_enum_base:
raise errors.SchemaError(
f'cannot add another type as supertype, '
f'enumeration must be the only supertype specified'
)
# Since all bases are enums at this point, error
# messages only mention about enums.
if pos:
raise errors.SchemaError(
f'cannot add another enum as supertype, '
f'use EXTENDING without position qualification')
all_bases.extend(bases)
if len(all_bases) > 1:
raise errors.SchemaError(
f'cannot set more than one enum as supertype')
new_base = all_bases[0]
new_labels = new_base.elements
schema = self._validate_enum_change(
scls, cur_labels, new_labels, schema, context)
else:
schema = super().apply(schema, context)
self.validate_scalar_bases(schema, context)
return schema
def _normalize_ptr_default(self, expr, source, ptr, ptrdecl):
module_aliases = {None: source.get_name(self._schema).module}
ir, _, expr_text = qlutils.normalize_tree(
expr,
self._schema,
modaliases=module_aliases,
anchors={qlast.Source: source},
singletons=[source])
expr_type = ir.stype
self._schema = ptr.set_field_value(self._schema, 'default', expr_text)
if ptr.is_pure_computable(self._schema):
# Pure computable without explicit target.
# Fixup pointer target and target property.
self._schema = ptr.set_field_value(self._schema, 'target',
expr_type)
if isinstance(ptr, s_links.Link):
if not isinstance(expr_type, s_objtypes.ObjectType):
raise errors.InvalidLinkTargetError(
f'invalid link target, expected object type, got '
f'{expr_type.__class__.__name__}',
context=ptrdecl.expr.context)
else:
if not isinstance(expr_type,
(s_scalars.ScalarType, s_types.Collection)):
raise errors.InvalidPropertyTargetError(
f'invalid property target, expected primitive type, '
f'got {expr_type.__class__.__name__}',
context=ptrdecl.expr.context)
if isinstance(ptr, s_links.Link):
tgt_prop = ptr.getptr(self._schema, 'target')
self._schema = tgt_prop.set_field_value(
self._schema, 'target', expr_type)
self._schema = ptr.set_field_value(self._schema, 'cardinality',
ir.cardinality)
if ptrdecl.cardinality is not ptr.get_cardinality(self._schema):
if ptrdecl.cardinality is qlast.Cardinality.ONE:
raise errors.SchemaError(
f'computable expression possibly returns more than '
f'one value, but the {ptr.schema_class_displayname!r} '
f'is declared as "single"',
context=expr.context)
if (not isinstance(expr_type, s_abc.Type)
or (ptr.get_target(self._schema) is not None
and not expr_type.issubclass(
self._schema, ptr.get_target(self._schema)))):
raise errors.SchemaError(
'default value query must yield a single result of '
'type {!r}'.format(
ptr.get_target(self._schema).get_name(self._schema)),
context=expr.context)
def _update_obj_name(
self,
obj_id: uuid.UUID,
scls: so.Object,
old_name: Optional[str],
new_name: Optional[str],
) -> Tuple[immu.Map[str, uuid.UUID], immu.Map[Tuple[
Type[so.Object], str], FrozenSet[uuid.UUID]], immu.Map[Tuple[
Type[so.Object], str], uuid.UUID], ]:
name_to_id = self._name_to_id
shortname_to_id = self._shortname_to_id
globalname_to_id = self._globalname_to_id
stype = type(scls)
is_global = not issubclass(stype, so.QualifiedObject)
has_sn_cache = issubclass(stype, (s_func.Function, s_oper.Operator))
if old_name is not None:
if is_global:
globalname_to_id = globalname_to_id.delete((stype, old_name))
else:
name_to_id = name_to_id.delete(old_name)
if has_sn_cache:
old_shortname = sn.shortname_from_fullname(old_name)
sn_key = (stype, old_shortname)
new_ids = shortname_to_id[sn_key] - {obj_id}
if new_ids:
shortname_to_id = shortname_to_id.set(sn_key, new_ids)
else:
shortname_to_id = shortname_to_id.delete(sn_key)
if new_name is not None:
if is_global:
key = (stype, new_name)
if key in globalname_to_id:
raise errors.SchemaError(
f'{stype.__name__} {new_name!r} '
f'is already present in the schema')
globalname_to_id = globalname_to_id.set(key, obj_id)
else:
if new_name in name_to_id:
raise errors.SchemaError(
f'name {new_name!r} is already in the schema')
name_to_id = name_to_id.set(new_name, obj_id)
if has_sn_cache:
new_shortname = sn.shortname_from_fullname(new_name)
sn_key = (stype, new_shortname)
try:
ids = shortname_to_id[sn_key]
except KeyError:
ids = frozenset()
shortname_to_id = shortname_to_id.set(sn_key, ids | {obj_id})
return name_to_id, shortname_to_id, globalname_to_id
def merge_targets(cls, schema, ptr, t1, t2, *, allow_contravariant=False):
if t1 is t2:
return schema, t1
# When two pointers are merged, check target compatibility
# and return a target that satisfies both specified targets.
if (isinstance(t1, s_abc.ScalarType) !=
isinstance(t2, s_abc.ScalarType)):
# Mixing a property with a link.
vnp = ptr.get_verbosename(schema, with_parent=True)
vn = ptr.get_verbosename(schema)
t1_vn = t1.get_verbosename(schema)
t2_vn = t2.get_verbosename(schema)
raise errors.SchemaError(
f'cannot redefine {vnp} as {t2_vn}',
details=f'{vn} is defined as a link to {t1_vn} in a '
f'parent type'
)
elif isinstance(t1, s_abc.ScalarType):
# Targets are both scalars
if t1 != t2:
vnp = ptr.get_verbosename(schema, with_parent=True)
vn = ptr.get_verbosename(schema)
t1_vn = t1.get_verbosename(schema)
t2_vn = t2.get_verbosename(schema)
raise errors.SchemaError(
f'cannot redefine {vnp} as {t2_vn}',
details=f'{vn} is defined as {t1_vn} in a parent type, '
f'which is incompatible with {t2_vn} ',
)
return schema, t1
else:
if t2.issubclass(schema, t1):
# The new target is a subclass of the current target, so
# it is a more specific requirement.
current_target = t2
elif allow_contravariant and t1.issubclass(schema, t2):
current_target = t1
else:
# The new target is not a subclass, of the previously seen
# targets, which creates an unresolvable target requirement
# conflict.
vnp = ptr.get_verbosename(schema, with_parent=True)
vn = ptr.get_verbosename(schema)
t2_vn = t2.get_verbosename(schema)
raise errors.SchemaError(
f'cannot redefine {vnp} as {t2_vn}',
details=(
f'{vn} targets {t2_vn} that is not related '
f'to a type found in this link in the parent type: '
f'{t1.get_displayname(schema)!r}.'))
return schema, current_target
def _get_bases(self, obj, decl):
"""Resolve object bases from the "extends" declaration."""
bases = []
enum_values = None
if decl.extends:
# Explicit inheritance
has_enums = any(br.maintype.name == 'enum' and br.subtypes
for br in decl.extends)
if has_enums:
if not obj.is_scalar():
raise errors.SchemaError(
f'{obj.get_displayname(self._schema)} '
f'cannot be an enumerated type',
context=decl.context,
)
if len(decl.extends) > 1:
raise errors.SchemaError(
f'invalid scalar type definition, enumeration must '
f'be the only supertype specified',
context=decl.extends[0].context,
)
enum_values = [st.val.value for st in decl.extends[0].subtypes]
bases = [self._schema.get('std::anyenum')]
else:
for base_ref in decl.extends:
base_name = self._get_ref_name(base_ref.maintype)
base = self._schema.get(base_name,
type=obj.__class__,
module_aliases=self._mod_aliases)
if base.get_is_final(self._schema):
msg = '{!r} is final and cannot be inherited ' \
'from'.format(base.get_name(self._schema))
raise errors.SchemaError(msg, context=decl)
bases.append(base)
elif obj.get_name(self._schema) not in type(obj).get_root_classes():
# Implicit inheritance from the default base class
default_base_name = type(obj).get_default_base_name()
if default_base_name is not None:
default_base = self._schema.get(
default_base_name, module_aliases=self._mod_aliases)
bases.append(default_base)
return s_obj.ObjectList.create(self._schema, bases), enum_values
async def read_indexes(self, schema, only_modules, exclude_modules):
pg_index_data = await introspection.tables.fetch_indexes(
self.connection,
schema_pattern='edgedb%', index_pattern='%_index')
pg_indexes = set()
for row in pg_index_data:
table_name = tuple(row['table_name'])
for pg_index in self.interpret_indexes(table_name, row['indexes']):
pg_indexes.add(
(table_name, pg_index.get_metadata('schemaname'))
)
ds = datasources.schema.indexes
indexes = await ds.fetch(
self.connection, modules=only_modules,
exclude_modules=exclude_modules)
for index_data in indexes:
subj = schema.get(index_data['subject_name'])
subj_table_name = common.get_backend_name(
schema, subj, catenate=False)
index_name = sn.Name(index_data['name'])
try:
pg_indexes.remove((subj_table_name, index_name))
except KeyError:
raise errors.SchemaError(
'internal metadata inconsistency',
details=f'Index {index_name} is defined in schema, but'
f'the corresponding PostgreSQL index is missing.'
) from None
schema, index = s_indexes.Index.create_in_schema(
schema,
id=index_data['id'],
name=index_name,
subject=subj,
expr=s_expr.Expression(**index_data['expr']))
schema = subj.add_index(schema, index)
if pg_indexes and not only_modules and not exclude_modules:
details = f'Extraneous PostgreSQL indexes found: {pg_indexes!r}'
raise errors.SchemaError(
'internal metadata inconsistency',
details=details)
return schema
def _get_local_obj(
refname: s_name.QualName,
tracer_type: Type[qltracer.NamedObject],
sourcectx: Optional[parsing.ParserContext],
*,
ctx: LayoutTraceContext,
) -> Optional[qltracer.NamedObject]:
obj = ctx.objects.get(refname)
if isinstance(obj, s_pseudo.PseudoType):
raise errors.SchemaError(
f'invalid type: {obj.get_verbosename(ctx.schema)} is a generic '
f'type and they are not supported in user-defined schema',
context=sourcectx,
)
elif obj is not None and not isinstance(obj, tracer_type):
obj_type = TRACER_TO_REAL_TYPE_MAP[type(obj)]
real_type = TRACER_TO_REAL_TYPE_MAP[tracer_type]
raise errors.InvalidReferenceError(
f'{str(refname)!r} exists, but is '
f'{english.add_a(obj_type.get_schema_class_displayname())}, '
f'not {english.add_a(real_type.get_schema_class_displayname())}',
context=sourcectx,
)
return obj
def validate_scalar_ancestors(
self,
ancestors: Sequence[so.SubclassableObject],
schema: s_schema.Schema,
context: sd.CommandContext,
) -> None:
concrete_ancestors = {
ancestor
for ancestor in ancestors if not ancestor.get_abstract(schema)
}
# Filter out anything that has a subclass relation with
# every other concrete ancestor. This lets us allow chains
# of concrete scalar types while prohibiting diamonds (for
# example if X <: A, B <: int64 where A, B are concrete).
# (If we wanted to allow diamonds, we could instead filter out
# anything that has concrete bases.)
concrete_ancestors = {
c1
for c1 in concrete_ancestors
if not all(c1 == c2 or c1.issubclass(schema, c2)
or c2.issubclass(schema, c1)
for c2 in concrete_ancestors)
}
if len(concrete_ancestors) > 1:
raise errors.SchemaError(
f'scalar type may not have more than '
f'one concrete base type',
context=self.source_context,
)
def merge_cardinality(target: so.Object, sources: typing.List[so.Object],
field_name: str, *, schema) -> object:
current = None
current_from = None
target_source = target.get_source(schema)
for source in [target] + list(sources):
nextval = source.get_explicit_field_value(schema, field_name, None)
if nextval is not None:
if current is None:
current = nextval
current_from = source
else:
if current is not nextval:
current_from_source = current_from.get_source(schema)
source_source = source.get_source(schema)
tgt_repr = (f'{target_source.get_displayname(schema)}.'
f'{target.get_displayname(schema)}')
cf_repr = (
f'{current_from_source.get_displayname(schema)}.'
f'{current_from.get_displayname(schema)}')
other_repr = (f'{source_source.get_displayname(schema)}.'
f'{source.get_displayname(schema)}')
raise errors.SchemaError(
f'cannot redefine the target cardinality of '
f'{tgt_repr!r}: it is defined '
f'as {current.as_ptr_qual()!r} in {cf_repr!r} and '
f'as {nextval.as_ptr_qual()!r} in {other_repr!r}.')
return current
def from_subtypes(cls, schema, subtypes, typemods=None, *, name=None):
if len(subtypes) != 1:
raise errors.SchemaError(
f'unexpected number of subtypes, expecting 1: {subtypes!r}')
stype = subtypes[0]
if isinstance(stype, Array):
raise errors.UnsupportedFeatureError(
f'nested arrays are not supported')
if typemods:
dimensions = typemods[0]
else:
dimensions = []
if isinstance(stype, cls):
# There is no array of arrays, only multi-dimensional arrays.
element_type = stype.element_type
if not dimensions:
dimensions.append(-1)
dimensions += stype.dimensions
else:
element_type = stype
dimensions = []
return cls.create(schema,
element_type=element_type,
dimensions=dimensions,
name=name)
def merge_cardinality(target: Pointer, sources: List[so.Object],
field_name: str, *, schema: s_schema.Schema) -> object:
current = None
current_from = None
for source in [target] + list(sources):
nextval = source.get_explicit_field_value(schema, field_name, None)
if nextval is not None:
if current is None:
current = nextval
current_from = source
elif current is not nextval:
tgt_repr = target.get_verbosename(
schema, with_parent=True)
cf_repr = current_from.get_verbosename(
schema, with_parent=True)
other_repr = source.get_verbosename(
schema, with_parent=True)
raise errors.SchemaError(
f'cannot redefine the target cardinality of '
f'{tgt_repr}: it is defined '
f'as {current.as_ptr_qual()!r} in {cf_repr} and '
f'as {nextval.as_ptr_qual()!r} in {other_repr}.'
)
return current
def _classbases_from_ast(cls, schema, astnode, context):
classname = cls._classname_from_ast(schema, astnode, context)
modaliases = context.modaliases
bases = so.ObjectList.create(
schema,
[utils.ast_to_typeref(b, modaliases=modaliases, schema=schema)
for b in getattr(astnode, 'bases', None) or []]
)
for base in bases.objects(schema):
if base.is_type() and base.contains_any():
base_type_name = base.get_displayname(schema)
raise errors.SchemaError(
f"{base_type_name!r} cannot be a parent type")
mcls = cls.get_schema_metaclass()
if not bases and classname not in mcls.get_root_classes():
default_base = mcls.get_default_base_name()
if default_base is not None and classname != default_base:
default_base = schema.get(default_base)
bases = so.ObjectList.create(
schema,
[utils.reduce_to_typeref(schema, default_base)])
return bases
def _delete_finalize(self, schema, context, scls):
ref_strs = []
if not context.canonical:
refs = schema.get_referrers(self.scls)
if refs:
for ref in refs:
if (not context.is_deleting(ref)
and ref.is_blocking_ref(schema, scls)):
ref_strs.append(
ref.get_verbosename(schema, with_parent=True))
if ref_strs:
vn = self.scls.get_verbosename(schema, with_parent=True)
dn = self.scls.get_displayname(schema)
detail = '; '.join(f'{ref_str} depends on {dn}'
for ref_str in ref_strs)
raise errors.SchemaError(
f'cannot drop {vn} because '
f'other objects in the schema depend on it',
details=detail,
)
schema = schema.delete(scls)
return schema
def _set_obj_field(self, obj_id, field, value):
try:
data = self._id_to_data[obj_id]
except KeyError:
err = (f'cannot set {field!r} value: item {str(obj_id)!r} '
f'is not present in the schema {self!r}')
raise errors.SchemaError(err) from None
name_to_id = None
shortname_to_id = None
globalname_to_id = None
if field == 'name':
old_name = data.get('name')
name_to_id, shortname_to_id, globalname_to_id = (
self._update_obj_name(obj_id, self._id_to_type[obj_id],
old_name, value))
new_data = data.set(field, value)
id_to_data = self._id_to_data.set(obj_id, new_data)
scls = self._id_to_type[obj_id]
if field in data:
orig_field_data = {field: data[field]}
else:
orig_field_data = {}
refs_to = self._update_refs_to(scls, orig_field_data, {field: value})
return self._replace(name_to_id=name_to_id,
shortname_to_id=shortname_to_id,
globalname_to_id=globalname_to_id,
id_to_data=id_to_data,
refs_to=refs_to)
def _parse_field_setters(
self, scls, field_decls: typing.List[qlast.Field]):
fields = type(scls).get_fields()
updates = {}
for field_decl in field_decls:
fieldname = field_decl.name.name
attrfield = fields.get(fieldname)
if attrfield is None or not attrfield.allow_ddl_set:
raise errors.SchemaError(
f'unexpected field {fieldname}',
context=field_decl.context)
if issubclass(attrfield.type, s_expr.Expression):
updates[fieldname] = s_expr.Expression.from_ast(
field_decl.value,
self._schema,
self._mod_aliases,
)
else:
updates[fieldname] = qlcompiler.evaluate_ast_to_python_val(
field_decl.value, self._schema,
modaliases=self._mod_aliases)
if updates:
self._schema = scls.update(self._schema, updates)
def _get_bases(self, obj, decl):
"""Resolve object bases from the "extends" declaration."""
bases = []
if decl.extends:
# Explicit inheritance
for base_ref in decl.extends:
base_name = self._get_ref_name(base_ref.maintype)
base = self._schema.get(base_name,
type=obj.__class__,
module_aliases=self._mod_aliases)
if base.get_is_final(self._schema):
msg = '{!r} is final and cannot be inherited ' \
'from'.format(base.get_name(self._schema))
raise errors.SchemaError(msg, context=decl)
bases.append(base)
elif obj.get_name(self._schema) not in type(obj).get_root_classes():
# Implicit inheritance from the default base class
default_base_name = type(obj).get_default_base_name()
if default_base_name is not None:
default_base = self._schema.get(
default_base_name, module_aliases=self._mod_aliases)
bases.append(default_base)
return s_obj.ObjectList.create(self._schema, bases)
def _merge_lineage(schema, obj, lineage):
result = []
while True:
nonempty = [line for line in lineage if line]
if not nonempty:
return result
for line in nonempty:
candidate = line[0]
tails = [
m for m in nonempty if id(candidate) in {id(c)
for c in m[1:]}
]
if not tails:
break
else:
name = obj.get_verbosename(schema)
raise errors.SchemaError(
f"Could not find consistent ancestor order for {name}")
result.append(candidate)
for line in nonempty:
if line[0] is candidate:
del line[0]
return result
def _get_bases(decl, *, ctx):
"""Resolve object bases from the "extends" declaration."""
bases = []
if decl.bases:
# Explicit inheritance
has_enums = any(br.maintype.name == "enum" and br.subtypes
for br in decl.bases)
if has_enums:
if len(decl.bases) > 1:
raise errors.SchemaError(
f"invalid scalar type definition, enumeration must "
f"be the only supertype specified",
context=decl.bases[0].context,
)
bases = [s_name.Name("std::anyenum")]
else:
for base_ref in decl.bases:
base_name = ctx.get_ref_name(base_ref.maintype)
bases.append(base_name)
return bases
def _add(self, id, scls, data) -> 'Schema':
name = data['name']
if name in self._name_to_id:
raise errors.SchemaError(
f'{type(scls).__name__} {name!r} is already present '
f'in the schema {self!r}')
data = immu.Map(data)
name_to_id, shortname_to_id = self._update_obj_name(
id, scls, None, name)
updates = dict(
id_to_data=self._id_to_data.set(id, data),
id_to_type=self._id_to_type.set(id, scls),
name_to_id=name_to_id,
shortname_to_id=shortname_to_id,
refs_to=self._update_refs_to(scls, None, data),
)
if isinstance(scls, s_modules.Module):
updates['modules'] = self._modules.set(name, id)
elif name.module not in self._modules:
raise errors.UnknownModuleError(
f'module {name.module!r} is not in this schema')
return self._replace(**updates)
def _validate_base_refs(
cls,
schema: s_schema.Schema,
base_refs: List[so.Object],
astnode: qlast.ObjectDDL,
context: sd.CommandContext,
) -> so.ObjectList[so.InheritingObject]:
classname = cls._classname_from_ast(schema, astnode, context)
bases = so.ObjectList[so.InheritingObject].create(schema, base_refs)
for base in bases.objects(schema):
if base.is_type() and base.contains_any(schema):
base_type_name = base.get_displayname(schema)
raise errors.SchemaError(
f"{base_type_name!r} cannot be a parent type")
mcls = cls.get_schema_metaclass()
if not bases and classname not in mcls.get_root_classes():
default_base = mcls.get_default_base_name()
if default_base is not None and classname != default_base:
default_base = schema.get(default_base)
bases = so.ObjectList[so.InheritingObject].create(
schema,
[utils.reduce_to_typeref(schema, default_base)],
)
return bases
def _add(
self,
id: uuid.UUID,
scls: so.Object,
data: Mapping[str, Any],
) -> Schema:
name = data['name']
if name in self._name_to_id:
raise errors.SchemaError(
f'{type(scls).__name__} {name!r} is already present '
f'in the schema {self!r}')
data = immu.Map(data)
name_to_id, shortname_to_id, globalname_to_id = self._update_obj_name(
id, scls, None, name)
updates = dict(
id_to_data=self._id_to_data.set(id, data),
id_to_type=self._id_to_type.set(id, scls),
name_to_id=name_to_id,
shortname_to_id=shortname_to_id,
globalname_to_id=globalname_to_id,
refs_to=self._update_refs_to(scls, None, data),
)
if (isinstance(scls, so.QualifiedObject)
and not self.has_module(name.module)):
raise errors.UnknownModuleError(
f'module {name.module!r} is not in this schema')
return self._replace(**updates) # type: ignore
def _merge_mro(schema, obj, mros):
result = []
while True:
nonempty = [mro for mro in mros if mro]
if not nonempty:
return result
for mro in nonempty:
candidate = mro[0]
tails = [
m for m in nonempty if id(candidate) in {id(c)
for c in m[1:]}
]
if not tails:
break
else:
raise errors.SchemaError(
f"Could not find consistent ancestor order for "
f"{obj.get_verbosename(schema)}")
result.append(candidate)
for mro in nonempty:
if mro[0] is candidate:
del mro[0]
return result
def derive_subtype(
self: TypeT,
schema,
*,
name: str,
mark_derived=False,
attrs=None,
inheritance_merge=True,
preserve_path_id=None,
refdict_whitelist=None,
**kwargs,
) -> typing.Tuple[s_schema.Schema, TypeT]:
if self.get_name(schema) == name:
raise errors.SchemaError(
f'cannot derive {self!r}({name}) from itself')
derived_attrs: typing.Dict[str, object] = {}
if attrs is not None:
derived_attrs.update(attrs)
derived_attrs['name'] = name
derived_attrs['bases'] = so.ObjectList.create(schema, [self])
cmdcls = sd.ObjectCommandMeta.get_command_class_or_die(
sd.CreateObject, type(self))
cmd = cmdcls(classname=name)
for k, v in derived_attrs.items():
cmd.set_attribute_value(k, v)
context = sd.CommandContext(
modaliases={},
schema=schema,
)
delta = sd.DeltaRoot()
with context(sd.DeltaRootContext(schema=schema, op=delta)):
if not inheritance_merge:
context.current().inheritance_merge = False
if refdict_whitelist is not None:
context.current().inheritance_refdicts = refdict_whitelist
if mark_derived:
context.current().mark_derived = True
if preserve_path_id:
context.current().preserve_path_id = True
delta.add(cmd)
schema, _ = delta.apply(schema, context)
derived = schema.get(name)
return schema, derived
async def read_modules(self, schema, only_modules, exclude_modules):
schemas = await introspection.schemas.fetch(self.connection,
schema_pattern='edgedb_%')
schemas = {
s['name']
for s in schemas if not s['name'].startswith('edgedb_aux_')
}
modules = await datasources.schema.modules.fetch(
self.connection,
modules=only_modules,
exclude_modules=exclude_modules)
modules = [{
'id': m['id'],
'name': m['name'],
'builtin': m['builtin']
} for m in modules]
recorded_schemas = set()
for module in modules:
schema, mod = s_mod.Module.create_in_schema(
schema,
id=module['id'],
name=module['name'],
builtin=module['builtin'])
recorded_schemas.add(common.get_backend_name(schema, mod))
# Sanity checks
extra_schemas = schemas - recorded_schemas - {'edgedb', 'edgedbss'}
missing_schemas = recorded_schemas - schemas
if extra_schemas and not only_modules and not exclude_modules:
msg = 'internal metadata incosistency'
details = 'Extraneous data schemas exist: {}'.format(', '.join(
'"%s"' % s for s in extra_schemas))
raise errors.SchemaError(msg, details=details)
if missing_schemas:
msg = 'internal metadata incosistency'
details = 'Missing schemas for modules: {}'.format(', '.join(
'{!r}'.format(s) for s in missing_schemas))
raise errors.SchemaError(msg, details=details)
return schema
def get_topmost_concrete_base(self, schema):
# Get the topmost non-abstract base.
for ancestor in reversed(self.compute_mro(schema)):
if not ancestor.get_is_abstract(schema):
return ancestor
raise errors.SchemaError(
f'{self.get_verbosename(schema)} has no non-abstract ancestors')
def get_class(cls, schema_name):
if schema_name == 'array':
return Array
elif schema_name == 'tuple':
return Tuple
else:
raise errors.SchemaError(
'unknown collection type: {!r}'.format(schema_name))
