Struct HookContext 

pub struct HookContext<'a> { /* private fields */ }

Context shared with one generated lifecycle hook.

Pre-hooks receive a mutable context and may add metadata for post-hooks. The generated input is present for insert, put, and update. Delete supplies an IID but has no generated create value. The operation timestamp and metadata remain stable across its pre- and post-hook phases.

Implementations

impl<'a> HookContext<'a>

pub const fn type_id_json(&self) -> &'static str

Canonical generated type identity JSON.

pub const fn type_name(&self) -> &str

Provider type label resolved from the generated identity.

pub const fn model_kind(&self) -> ModelKind

Whether the model is an entity or relation.

pub const fn operation(&self) -> CrudOperation

CRUD operation being performed.

pub const fn iid(&self) -> Option<&str>

Canonical target IID when the operation has one.

pub const fn input(&self) -> Option<&EncodedCreate>

Generated create value for insert, put, or update.

pub const fn timestamp(&self) -> &SystemTime

Time at which pre-hook processing for this operation began.

pub fn metadata(&self) -> &BTreeMap<String, Value>

Read application metadata accumulated by earlier pre-hooks.

pub fn metadata_mut(&mut self) -> &mut BTreeMap<String, Value>

Add or change application metadata passed to later and post hooks.

pub fn set_metadata(&mut self, key: impl Into<String>, value: impl Into<Value>)

Store JSON-compatible application metadata without requiring a direct serde_json dependency for common scalar values.