class LogicalExprSchema(BaseSchema):
"""Expression combining multiple other query expressions."""
op = base.String(description="The operator.")
# many=True does not work here for some reason.
expr = base.List(
base.Nested(
lambda *a, **kw: ExprSchema(*a, **kw), # pylint: disable=unnecessary-lambda
description="A list of query expressions to combine.",
))
class NotExprSchema(BaseSchema):
"""Expression negating another query expression.
Examples:
>>> from cmk.utils.livestatus_helpers.tables import Hosts
>>> input_expr = {'op': '=', 'left': 'hosts.name', 'right': 'foo'}
>>> q = {'op': 'not', 'expr': input_expr}
>>> result = NotExprSchema(context={'table': Hosts}).load(q)
>>> assert result == q
"""
op = base.String(description="The operator. In this case `not`.")
expr = base.Nested(
lambda: ExprSchema(), # pylint: disable=unnecessary-lambda
description="The query expression to negate.",
)