Enum QueryResult 

pub enum QueryResult<'s, S>
where
    S: AsRef<str> + Bos<str>,
{
    Single(&'s Data<S>),
    Multiple(Vec<QueryMatch<'s, S>>),
    None,
}

Result of a data query operation

Variants

Single(&'s Data<S>)

Single value expected and found

Multiple(Vec<QueryMatch<'s, S>>)

Multiple values from wildcard or global recursion

None

No matches found

Implementations

impl<'s, S> QueryResult<'s, S>

where S: AsRef<str> + Bos<str>,

pub fn single(&self) -> Option<&'s Data<S>>

Get single value if available

pub fn multiple(&self) -> Option<&[QueryMatch<'s, S>]>

Get multiple matches if available

pub fn first(&self) -> Option<&'s Data<S>>

Get first value regardless of result type

pub fn is_empty(&self) -> bool

Check if any results were found

pub fn values(&self) -> impl Iterator<Item = &'s Data<S>>

Get all values as an iterator (flattens single/multiple)

Trait Implementations

impl<'s, S> Clone for QueryResult<'s, S>

where S: AsRef<str> + Bos<str> + Clone,

fn clone(&self) -> QueryResult<'s, S>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'s, S> Debug for QueryResult<'s, S>

where S: AsRef<str> + Bos<str> + Debug,

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

Formats the value using the given formatter.

impl<'s, S> PartialEq for QueryResult<'s, S>

where S: AsRef<str> + Bos<str> + PartialEq,

fn eq(&self, other: &QueryResult<'s, S>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'s, S> StructuralPartialEq for QueryResult<'s, S>

where S: AsRef<str> + Bos<str>,