Enum InsertTarget 

pub enum InsertTarget {
    Scope(Box<Query>),
    Model(ModelId),
    Table(InsertTable),
}

The target of an Insert statement.

Specifies where new records should be inserted. At the model level this is typically a model ID or a scoped query. After lowering, it becomes a table with column mappings.

Examples

use toasty_core::stmt::InsertTarget;
use toasty_core::schema::app::ModelId;

let target = InsertTarget::Model(ModelId(0));
assert!(target.is_model());
assert!(!target.is_table());

Variants

Scope(Box<Query>)

Insert into a scoped query. The inserted value should satisfy the query’s filter, which may set default field values or validate existing ones.

Model(ModelId)

Insert a model by its ID.

Table(InsertTable)

Insert into a database table (lowered form).

Implementations

impl InsertTarget

pub fn is_model(&self) -> bool

Returns true if this target is a Model variant.

pub fn model_id_unwrap(&self) -> ModelId

Returns the model ID for this target.

For Scope targets, extracts the model ID from the inner query’s select source.

Panics

Panics if this is a Table variant.

pub fn is_table(&self) -> bool

Returns true if this target is a Table variant.

pub fn as_table(&self) -> Option<&InsertTable>

Returns a reference to the inner InsertTable if this is a Table variant.

pub fn as_table_unwrap(&self) -> &InsertTable

Returns a reference to the inner InsertTable.

Panics

Panics if this is not a Table variant.

pub fn add_constraint(&mut self, expr: impl Into<Expr>)

Adds a constraint expression to this target.

For Scope targets, the expression is added as a filter. For Model targets, the target is upgraded to a Scope wrapping a select query with the constraint as a filter.

Trait Implementations

impl Clone for InsertTarget

fn clone(&self) -> InsertTarget

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InsertTarget

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

Formats the value using the given formatter.

impl From<InsertTable> for InsertTarget

fn from(value: InsertTable) -> Self

Converts to this type from the input type.

impl From<Query> for InsertTarget

fn from(value: Query) -> Self

Converts to this type from the input type.

impl<'a, T: Resolve> IntoExprTarget<'a, T> for &'a InsertTarget

fn into_expr_target(self, schema: &'a T) -> ExprTarget<'a>

Converts self into an ExprTarget using the provided schema.

impl PartialEq for InsertTarget

fn eq(&self, other: &InsertTarget) -> 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 StructuralPartialEq for InsertTarget