Struct spacetimedb_vm::expr::QueryExpr

pub struct QueryExpr {
    pub source: SourceExpr,
    pub query: Vec<Query>,
}

Fields

source: SourceExpr

query: Vec<Query>

Implementations

impl QueryExpr

pub fn new<T: Into<SourceExpr>>(source: T) -> Self

pub fn sources(&self) -> QueryExprSources

Iterate over all SourceExprs involved in the QueryExpr.

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

pub fn with_index_eq( self, table: DbTable, col_id: ColId, value: AlgebraicValue ) -> Self

pub fn with_index_lower_bound( self, table: DbTable, col_id: ColId, value: AlgebraicValue, inclusive: bool ) -> Self

pub fn with_index_upper_bound( self, table: DbTable, col_id: ColId, value: AlgebraicValue, inclusive: bool ) -> Self

pub fn with_select<O>(self, op: O) -> Selfwhere O: Into<ColumnOp>,

pub fn with_select_cmp<LHS, RHS, O>(self, op: O, lhs: LHS, rhs: RHS) -> Selfwhere LHS: Into<FieldExpr>, RHS: Into<FieldExpr>, O: Into<OpQuery>,

pub fn with_project( self, cols: &[FieldExpr], wildcard_table_id: Option<TableId> ) -> Self

pub fn with_join_inner( self, with: impl Into<QueryExpr>, lhs: FieldName, rhs: FieldName ) -> Self

pub fn optimize(self) -> Self

Trait Implementations

impl Clone for QueryExpr

fn clone(&self) -> QueryExpr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for QueryExpr

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

Formats the value using the given formatter.

impl From<DbTable> for QueryExpr

fn from(value: DbTable) -> Self

Converts to this type from the input type.

impl From<MemTable> for QueryExpr

fn from(value: MemTable) -> Self

Converts to this type from the input type.

impl From<QueryExpr> for Expr

fn from(x: QueryExpr) -> Self

Converts to this type from the input type.

impl From<QueryExpr> for QueryCode

fn from(value: QueryExpr) -> Self

Converts to this type from the input type.

impl Ord for QueryExpr

fn cmp(&self, other: &QueryExpr) -> 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 QueryExpr

fn eq(&self, other: &QueryExpr) -> 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 QueryExpr

fn partial_cmp(&self, other: &QueryExpr) -> 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 QueryExpr

impl StructuralEq for QueryExpr

impl StructuralPartialEq for QueryExpr