Struct SkipIfAbsentBinding 

pub struct SkipIfAbsentBinding<'a> {
    pub field: &'a str,
    pub excludes_missing: bool,
}

How a query constrains one field, as the skipIfAbsent gate reads it (index_admissible_for_skip_if_absent).

Fields

field: &'a str

The field.

excludes_missing: bool

Whether the constraint can never match a document missing the field. On a stored type a missing value is indexed under the empty key, which sorts first, so an ordering, a range with no lower bound and a null equality all reach it on an index that does not skip.

Implementations

impl<'a> SkipIfAbsentBinding<'a>

pub fn ordering(field: &'a str) -> Self

An order-by on field: it reaches documents missing the field on an index that does not skip them.

pub fn for_where_clause(clause: &'a WhereClause) -> Self

The binding a where clause makes: equality and in exclude missing documents unless they name a value that may encode as missing, a range excludes them when its lower bound may not (strict bounds exclude the empty key outright), and startsWith when its prefix is not empty.

pub fn for_where_clauses(where_clauses: &'a [WhereClause]) -> Vec<Self>

The bindings of where_clauses.

Trait Implementations

impl<'a> Clone for SkipIfAbsentBinding<'a>

fn clone(&self) -> SkipIfAbsentBinding<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for SkipIfAbsentBinding<'a>

impl<'a> Debug for SkipIfAbsentBinding<'a>

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

Formats the value using the given formatter.

impl<'a> Eq for SkipIfAbsentBinding<'a>

impl<'a> PartialEq for SkipIfAbsentBinding<'a>

fn eq(&self, other: &SkipIfAbsentBinding<'a>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<'a> StructuralPartialEq for SkipIfAbsentBinding<'a>