Enum TransactionStatement 

pub enum TransactionStatement {
    Begin {
        syntax: TransactionStart,
        mode: Option<TransactionModeKind>,
        block: Option<TransactionBlockKeyword>,
        name: Option<Box<Ident>>,
        modes: ThinVec<TransactionMode>,
        meta: Meta,
    },
    Commit {
        syntax: TransactionCommitKeyword,
        block: Option<TransactionBlockKeyword>,
        name: Option<Box<Ident>>,
        chain: Option<bool>,
        release: Option<bool>,
        meta: Meta,
    },
    Rollback {
        syntax: TransactionRollbackKeyword,
        block: Option<TransactionBlockKeyword>,
        name: Option<Box<Ident>>,
        savepoint_keyword: bool,
        to_savepoint: Option<Ident>,
        chain: Option<bool>,
        release: Option<bool>,
        meta: Meta,
    },
    Savepoint {
        name: Ident,
        meta: Meta,
    },
    Release {
        savepoint_keyword: bool,
        savepoint: Ident,
        meta: Meta,
    },
    SetCharacteristics {
        modes: ThinVec<TransactionMode>,
        meta: Meta,
    },
}

A transaction-control statement (SQL:2016 §17).

The operational statements clients send to bound a transaction: START TRANSACTION (and its near-universal BEGIN alias), COMMIT, ROLLBACK (optionally rewinding to a savepoint), SAVEPOINT, RELEASE SAVEPOINT, and SET TRANSACTION characteristics.

One canonical shape per construct. BEGIN and START TRANSACTION denote the same operation, so they share the Begin shape and a TransactionStart tag records which spelling was written. The interchangeable WORK / TRANSACTION block noise words on BEGIN/COMMIT/ROLLBACK carry no meaning; a TransactionBlockKeyword tag records which (if any) was written so a source-fidelity render replays it, while a target re-spell and the redacted fingerprint drop it.

Variants

Begin

A BEGIN / START TRANSACTION statement.

Fields

syntax: TransactionStart

Source spelling used for the syntax.

mode: Option<TransactionModeKind>

SQLite’s {DEFERRED | IMMEDIATE | EXCLUSIVE} transaction-mode modifier, written between BEGIN and the optional TRANSACTION keyword. None when the dialect does not admit one (or the statement omits it).

block: Option<TransactionBlockKeyword>

The optional TRANSACTION / WORK block noise word after BEGIN or START. None for a bare keyword. Standard START TRANSACTION records Some(Transaction); dialect data controls whether START may omit the word or use WORK.

name: Option<Box<Ident>>

SQLite’s optional name after an explicit TRANSACTION keyword.

modes: ThinVec<TransactionMode>

modes in source order.

meta: Meta

Source location and node identity.

Commit

A COMMIT statement.

Fields

syntax: TransactionCommitKeyword

Source spelling used for the commit operation.

block: Option<TransactionBlockKeyword>

The optional TRANSACTION / WORK block noise word after COMMIT.

name: Option<Box<Ident>>

SQLite’s optional name after an explicit TRANSACTION keyword.

chain: Option<bool>

Some(true) for AND CHAIN, Some(false) for AND NO CHAIN.

release: Option<bool>

Some(true) for RELEASE, Some(false) for NO RELEASE.

meta: Meta

Source location and node identity.

Rollback

ROLLBACK [WORK | TRANSACTION] [TO [SAVEPOINT] <name>].

to_savepoint is Some for the savepoint-rewind form and None for a whole-transaction rollback.

Fields

syntax: TransactionRollbackKeyword

Source spelling used for the rollback operation.

block: Option<TransactionBlockKeyword>

The optional TRANSACTION / WORK block noise word after ROLLBACK.

name: Option<Box<Ident>>

SQLite’s optional name after an explicit TRANSACTION keyword.

savepoint_keyword: bool

Whether the optional SAVEPOINT keyword was written before the savepoint name (ROLLBACK TO SAVEPOINT x vs the bare ROLLBACK TO x). Meaningful only when to_savepoint is Some; the canonical render emits SAVEPOINT.

to_savepoint: Option<Ident>

Optional to savepoint for this syntax.

chain: Option<bool>

Some(true) for AND CHAIN, Some(false) for AND NO CHAIN; only valid for a whole-transaction rollback.

release: Option<bool>

Some(true) for RELEASE, Some(false) for NO RELEASE; only valid for a whole-transaction rollback.

meta: Meta

Source location and node identity.

Savepoint

A SAVEPOINT <name> statement.

Fields

name: Ident

Name referenced by this syntax.

meta: Meta

Source location and node identity.

Release

A RELEASE [SAVEPOINT] <name> statement.

Fields

savepoint_keyword: bool

Whether the optional SAVEPOINT keyword was written (RELEASE SAVEPOINT x vs the bare RELEASE x). Exact-synonym fidelity; the canonical render emits SAVEPOINT.

savepoint: Ident

The savepoint name being released.

meta: Meta

Source location and node identity.

SetCharacteristics

SET TRANSACTION <mode> [, ...]: set the current transaction’s characteristics (distinct from the session SET).

Fields

modes: ThinVec<TransactionMode>

modes in source order.

meta: Meta

Source location and node identity.

Trait Implementations

impl Clone for TransactionStatement

fn clone(&self) -> TransactionStatement

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TransactionStatement

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TransactionStatement

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for TransactionStatement

impl Hash for TransactionStatement

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 PartialEq for TransactionStatement

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

Equality operator ==.

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

Inequality operator !=.

impl Render for TransactionStatement

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 Serialize for TransactionStatement

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Spanned for TransactionStatement

fn span(&self) -> Span

Return the span for this value.

impl StructuralPartialEq for TransactionStatement