Struct DropTransform 

pub struct DropTransform<X: Extension = NoExt> {
    pub object: ObjectReference<X>,
    pub if_exists: bool,
    pub behavior: Option<DropBehavior>,
    pub meta: Meta,
}

A PostgreSQL DROP TRANSFORM [IF EXISTS] FOR <type> LANGUAGE <lang> [CASCADE | RESTRICT] statement (DropTransformStmt, gram.y).

Kept apart from DropStatement because a transform is not named by a plain name list: it is identified by the (type, language) pair a CREATE TRANSFORM registers, which is exactly the ObjectReference::Transform shape the shared object-reference axis already models (also reached by ALTER EXTENSION … ADD|DROP TRANSFORM). Reusing that variant keeps every transform reference on one node, so an AST walk finds transforms uniformly regardless of the parent statement, rather than re-deriving the FOR type LANGUAGE lang shape here (the reason DropRoutine inlines its signature does not apply — a transform has a single fixed shape, not a per-kind one).

PostgreSQL admits exactly one transform per statement (no comma list — engine-measured) and places IF EXISTS between the TRANSFORM keyword and FOR (DROP TRANSFORM IF EXISTS FOR …; FOR type IF EXISTS LANGUAGE is a syntax error), which is why the guard rides on this node rather than on the shared reference render.

Fields

object: ObjectReference<X>

The dropped transform, always an ObjectReference::Transform (FOR <type> LANGUAGE <lang>).

if_exists: bool

Whether the IF EXISTS guard was present in the source.

behavior: Option<DropBehavior>

Optional CASCADE/RESTRICT behaviour for this syntax.

meta: Meta

Source location and node identity.

Trait Implementations

impl<X: Clone + Extension> Clone for DropTransform<X>

fn clone(&self) -> DropTransform<X>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<X: Debug + Extension> Debug for DropTransform<X>

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

Formats the value using the given formatter.

impl<'de, X> Deserialize<'de> for DropTransform<X>

where X: Deserialize<'de> + Extension,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<X: Eq + Extension> Eq for DropTransform<X>

impl<X: Hash + Extension> Hash for DropTransform<X>

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<X: PartialEq + Extension> PartialEq for DropTransform<X>

fn eq(&self, other: &DropTransform<X>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<X: Extension + Render> Render for DropTransform<X>

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

Return the render for this value.

fn operand_binding_power(&self) -> Option<BindingPower>

The binding power this node contributes when it appears as an operand, or None (the default) for a self-delimiting node — an atom, call, or constructor — that never needs parentheses.

impl<X> Serialize for DropTransform<X>

where X: Serialize + Extension,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<X: Extension> Spanned for DropTransform<X>

fn span(&self) -> Span

Return the span for this value.

impl<X: PartialEq + Extension> StructuralPartialEq for DropTransform<X>