Enum Query 

pub enum Query {
    IndexScan(IndexScan),
    IndexJoin(IndexJoin),
    Select(ColumnOp),
    Project(ProjectExpr),
    JoinInner(JoinExpr),
}

Variants

IndexScan(IndexScan)

IndexJoin(IndexJoin)

Select(ColumnOp)

Project(ProjectExpr)

JoinInner(JoinExpr)

Implementations

impl Query

pub fn walk_sources<E>( &self, on_source: &mut impl FnMut(&SourceExpr) -> Result<(), E>, ) -> Result<(), E>

Iterate over all SourceExprs involved in the Query.

Sources are yielded from left to right. Duplicates are not filtered out.

Trait Implementations

impl AuthAccess for Query

fn check_auth(&self, owner: Identity, caller: Identity) -> Result<(), AuthError>

impl Clone for Query

fn clone(&self) -> Query

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Query

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

Formats the value using the given formatter.

impl Display for Query

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

Formats the value using the given formatter.

impl From<ColumnOp> for Query

fn from(original: ColumnOp) -> Query

Converts to this type from the input type.

impl From<IndexJoin> for Query

fn from(original: IndexJoin) -> Query

Converts to this type from the input type.

impl From<IndexScan> for Query

fn from(original: IndexScan) -> Query

Converts to this type from the input type.

impl From<JoinExpr> for Query

fn from(original: JoinExpr) -> Query

Converts to this type from the input type.

impl From<ProjectExpr> for Query

fn from(original: ProjectExpr) -> Query

Converts to this type from the input type.

impl From<Query> for Option<ColumnOp>

fn from(value: Query) -> Self

Converts to this type from the input type.

impl Hash for Query

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Query

fn eq(&self, other: &Query) -> 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 Eq for Query

impl StructuralPartialEq for Query