def unnamed_tuple_as_json_object(expr, *, styperef, env):
vals = []
if styperef.in_schema:
for el_idx, el_type in enumerate(styperef.subtypes):
val = pgast.Indirection(
arg=expr,
indirection=[
pgast.ColumnRef(name=[str(el_idx)], ),
],
)
if irtyputils.is_collection(el_type):
val = coll_as_json_object(val, styperef=el_type, env=env)
vals.append(val)
return pgast.FuncCall(name=_get_json_func('build_array', env=env),
args=vals,
null_safe=True,
ser_safe=True,
nullable=expr.nullable)
else:
coldeflist = []
for el_idx, el_type in enumerate(styperef.subtypes):
coldeflist.append(
pgast.ColumnDef(
name=str(el_idx),
typename=pgast.TypeName(
name=pgtypes.pg_type_from_ir_typeref(el_type), ),
))
val = pgast.ColumnRef(name=[str(el_idx)])
if irtyputils.is_collection(el_type):
val = coll_as_json_object(val, styperef=el_type, env=env)
vals.append(val)
res = pgast.FuncCall(name=_get_json_func('build_array', env=env),
args=vals,
null_safe=True,
ser_safe=True,
nullable=expr.nullable)
return pgast.SelectStmt(
target_list=[
pgast.ResTarget(val=res, ),
],
from_clause=[
pgast.RangeFunction(functions=[
pgast.FuncCall(
name=('unnest', ),
args=[pgast.ArrayExpr(elements=[expr], )],
coldeflist=coldeflist,
)
])
])
def tuple_getattr(tuple_val, tuple_typeref, attr):
ttypes = []
pgtypes = []
for i, st in enumerate(tuple_typeref.subtypes):
pgtype = pg_types.pg_type_from_ir_typeref(st)
pgtypes.append(pgtype)
if st.element_name:
ttypes.append(st.element_name)
else:
ttypes.append(str(i))
index = ttypes.index(attr)
if tuple_typeref.in_schema:
set_expr = pgast.Indirection(
arg=tuple_val,
indirection=[
pgast.ColumnRef(
name=[attr],
),
],
)
else:
set_expr = pgast.SelectStmt(
target_list=[
pgast.ResTarget(
val=pgast.ColumnRef(
name=[str(index)],
),
),
],
from_clause=[
pgast.RangeFunction(
functions=[
pgast.FuncCall(
name=('unnest',),
args=[
pgast.ArrayExpr(
elements=[tuple_val],
)
],
coldeflist=[
pgast.ColumnDef(
name=str(i),
typename=pgast.TypeName(
name=t
)
)
for i, t in enumerate(pgtypes)
]
)
]
)
]
)
return set_expr
def named_tuple_as_json_object(
expr: pgast.BaseExpr,
*,
styperef: irast.TypeRef,
env: context.Environment,
) -> pgast.BaseExpr:
keyvals: List[pgast.BaseExpr] = []
if irtyputils.is_persistent_tuple(styperef):
for el_type in styperef.subtypes:
keyvals.append(pgast.StringConstant(val=el_type.element_name))
val: pgast.BaseExpr = pgast.Indirection(
arg=expr,
indirection=[
pgast.ColumnRef(
name=[el_type.element_name]
)
]
)
if irtyputils.is_collection(el_type):
val = coll_as_json_object(val, styperef=el_type, env=env)
keyvals.append(val)
return pgast.FuncCall(
name=_get_json_func('build_object', env=env),
args=keyvals, null_safe=True, ser_safe=True,
nullable=expr.nullable)
else:
coldeflist = []
for el_type in styperef.subtypes:
keyvals.append(pgast.StringConstant(val=el_type.element_name))
coldeflist.append(pgast.ColumnDef(
name=el_type.element_name,
typename=pgast.TypeName(
name=pgtypes.pg_type_from_ir_typeref(el_type),
),
))
val = pgast.ColumnRef(name=[el_type.element_name])
if irtyputils.is_collection(el_type):
val = coll_as_json_object(val, styperef=el_type, env=env)
keyvals.append(val)
res = pgast.FuncCall(
name=_get_json_func('build_object', env=env),
args=keyvals, null_safe=True, ser_safe=True,
nullable=expr.nullable)
return pgast.SelectStmt(
target_list=[
pgast.ResTarget(
val=res,
),
],
from_clause=[
pgast.RangeFunction(
functions=[
pgast.FuncCall(
name=('unnest',),
args=[
pgast.ArrayExpr(
elements=[expr],
)
],
coldeflist=coldeflist,
)
]
)
]
)
def unnamed_tuple_as_json_object(
expr: pgast.BaseExpr,
*,
styperef: irast.TypeRef,
env: context.Environment,
) -> pgast.BaseExpr:
vals: List[pgast.BaseExpr] = []
if irtyputils.is_persistent_tuple(styperef):
for el_idx, el_type in enumerate(styperef.subtypes):
val: pgast.BaseExpr = pgast.Indirection(
arg=expr,
indirection=[
pgast.ColumnRef(name=[str(el_idx)], ),
],
)
if irtyputils.is_collection(el_type):
val = coll_as_json_object(val, styperef=el_type, env=env)
vals.append(val)
return _build_json(
'build_array',
args=vals,
null_safe=True,
ser_safe=True,
nullable=expr.nullable,
env=env,
)
else:
coldeflist = []
for el_idx, el_type in enumerate(styperef.subtypes):
coldeflist.append(
pgast.ColumnDef(
name=str(el_idx),
typename=pgast.TypeName(
name=pgtypes.pg_type_from_ir_typeref(el_type), ),
))
val = pgast.ColumnRef(name=[str(el_idx)])
if irtyputils.is_collection(el_type):
val = coll_as_json_object(val, styperef=el_type, env=env)
vals.append(val)
res = _build_json(
'build_array',
args=vals,
null_safe=True,
ser_safe=True,
nullable=expr.nullable,
env=env,
)
return pgast.SelectStmt(
target_list=[
pgast.ResTarget(val=res, ),
],
from_clause=[
pgast.RangeFunction(functions=[
pgast.FuncCall(
name=('unnest', ),
args=[pgast.ArrayExpr(elements=[expr], )],
coldeflist=coldeflist,
)
])
])
def named_tuple_as_json_object(
expr: pgast.BaseExpr,
*,
styperef: irast.TypeRef,
env: context.Environment,
) -> pgast.BaseExpr:
keyvals: List[pgast.BaseExpr] = []
if irtyputils.is_persistent_tuple(styperef):
for el_type in styperef.subtypes:
assert el_type.element_name
keyvals.append(pgast.StringConstant(val=el_type.element_name))
val: pgast.BaseExpr = pgast.Indirection(
arg=expr,
indirection=[pgast.ColumnRef(name=[el_type.element_name])])
val = serialize_expr_to_json(val,
styperef=el_type,
nested=True,
env=env)
keyvals.append(val)
obj = _build_json(
'build_object',
args=keyvals,
null_safe=True,
ser_safe=True,
nullable=expr.nullable,
env=env,
)
else:
coldeflist = []
for el_type in styperef.subtypes:
assert el_type.element_name
keyvals.append(pgast.StringConstant(val=el_type.element_name))
coldeflist.append(
pgast.ColumnDef(
name=el_type.element_name,
typename=pgast.TypeName(
name=pgtypes.pg_type_from_ir_typeref(el_type), ),
))
val = pgast.ColumnRef(name=[el_type.element_name])
val = serialize_expr_to_json(val,
styperef=el_type,
nested=True,
env=env)
keyvals.append(val)
obj = _build_json(
'build_object',
args=keyvals,
null_safe=True,
ser_safe=True,
nullable=expr.nullable,
env=env,
)
obj = pgast.SelectStmt(
target_list=[
pgast.ResTarget(val=obj, ),
],
from_clause=[
pgast.RangeFunction(functions=[
pgast.FuncCall(
name=('unnest', ),
args=[pgast.ArrayExpr(elements=[expr], )],
coldeflist=coldeflist,
)
])
] if styperef.subtypes else [])
if expr.nullable:
obj = pgast.SelectStmt(target_list=[pgast.ResTarget(val=obj)],
where_clause=pgast.NullTest(arg=expr,
negated=True))
return obj
