Enum spacetimedb_vm::expr::Query

pub enum Query {
    IndexScan(IndexScan),
    IndexJoin(IndexJoin),
    Select(ColumnOp),
    Project(Vec<FieldExpr>, Option<TableId>),
    JoinInner(JoinExpr),
}

Variants

IndexScan(IndexScan)

IndexJoin(IndexJoin)

Select(ColumnOp)

Project(Vec<FieldExpr>, Option<TableId>)

JoinInner(JoinExpr)

Implementations

impl Query

pub fn sources(&self) -> QuerySources

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 copy 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<(Vec<FieldExpr>, Option<TableId>)> for Query

fn from(original: (Vec<FieldExpr>, Option<TableId>)) -> Query

Converts to this type from the input type.

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 Ord for Query

fn cmp(&self, other: &Query) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for Query

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for Query

fn partial_cmp(&self, other: &Query) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for Query

impl StructuralEq for Query

impl StructuralPartialEq for Query