Enum StreamShape 

pub enum StreamShape {
    ReadOnly,
    Mutating,
}

Classification of a compiled query, used by the database layer to decide whether db.stream needs a hidden staged transaction.

Variants

ReadOnly

No mutating operator anywhere in the plan or any of its UNION branches. Safe to stream against the live store.

Mutating

Has at least one mutating operator (Create / Merge / Delete / Set / Remove). The host should run this against a staged graph and only publish on cursor exhaustion.

Implementations

impl StreamShape

pub fn is_mutating(self) -> bool

Trait Implementations

impl Clone for StreamShape

fn clone(&self) -> StreamShape

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StreamShape

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

Formats the value using the given formatter.

impl PartialEq for StreamShape

fn eq(&self, other: &StreamShape) -> 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 Copy for StreamShape

impl Eq for StreamShape

impl StructuralPartialEq for StreamShape