Struct QueryOutput 

pub struct QueryOutput {
    pub spec: Rc<FindSpec>,
    pub results: QueryResults,
}

Fields

spec: Rc<FindSpec>

results: QueryResults

Implementations

impl QueryOutput

pub fn empty_factory(spec: &FindSpec) -> Box<dyn Fn() -> QueryResults>

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn empty(spec: &Rc<FindSpec>) -> QueryOutput

pub fn from_constants( spec: &Rc<FindSpec>, bindings: BTreeMap<Variable, TypedValue>, ) -> QueryResults

pub fn into_scalar(self) -> Result<Option<Binding>, ProjectorError>

pub fn into_coll(self) -> Result<Vec<Binding>, ProjectorError>

pub fn into_tuple<B>(self) -> Result<Option<B>, ProjectorError>

where B: BindingTuple,

Mentat tuple results can be expressed as multiple different data structures. Some structures are generic (vectors) and some are easier for pattern matching (fixed length tuples).

This is the moral equivalent of collect (and BindingTuple of FromIterator), but specialized to tuples of expected length.

pub fn into_rel(self) -> Result<RelResult<Binding>, ProjectorError>

Trait Implementations

impl Clone for QueryOutput

fn clone(&self) -> QueryOutput

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for QueryOutput

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Eq for QueryOutput

impl From<QueryOutput> for QueryResults

fn from(o: QueryOutput) -> QueryResults

Converts to this type from the input type.

impl PartialEq for QueryOutput

fn eq(&self, other: &QueryOutput) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for QueryOutput