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EntitySnapshotProjection

allsource_core::application::services::projection

Struct EntitySnapshotProjection 

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pub struct EntitySnapshotProjection { /* private fields */ }
Expand description

Entity snapshot projection - maintains current state of each entity

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impl EntitySnapshotProjection

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pub fn new(name: impl Into<String>) -> Self

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pub fn get_all_states(&self) -> Vec<(String, Value)>

Get all entity states

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impl Projection for EntitySnapshotProjection

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fn name(&self) -> &str

Get the name of this projection
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fn process(&self, event: &Event) -> Result<()>

Process an event and update the projection state
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fn get_state(&self, entity_id: &str) -> Option<Value>

Get the current state of the projection for an entity
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fn clear(&self)

Clear all projection state
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fn snapshot(&self) -> Option<Value>

Snapshot the entire projection state for checkpointing. Returns None if the projection does not support checkpointing.
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fn restore(&self, snapshot: &Value) -> Result<()>

Restore projection state from a previously saved snapshot.

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