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ProjectionBindingBuilder

laser_sdk::query

Struct ProjectionBindingBuilder 

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

Fluent builder for a ProjectionBinding.

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impl ProjectionBindingBuilder

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pub fn source( self, stream: impl Into<String>, topic: impl Into<String>, ) -> ProjectionBindingBuilder

Set the binding source. A source is always a (stream, topic) pair, and a topic only exists within a stream, so both are required.

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pub fn selector(self, source: SourceSelector) -> ProjectionBindingBuilder

Set the binding source from a pre-built SourceSelector.

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pub fn allow( self, projection: impl Into<ProjectionId>, ) -> ProjectionBindingBuilder

Allow records to route to this projection.

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pub fn default_projection( self, projection: impl Into<ProjectionId>, ) -> ProjectionBindingBuilder

Projection used when a record carries no agdx.ref.

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pub fn backend(self, backend: BackendBinding) -> ProjectionBindingBuilder

Bind the operational index to an exact backend resource generation. Omit this for the replica-local backend.

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pub fn retention(self, retention: RetentionPolicy) -> ProjectionBindingBuilder

Set how long the materialized rows live, independent of the source topic’s Iggy retention. Omit to inherit the managed backend’s default.

// Short-lived topic, permanent index:
let binding = ProjectionBinding::builder()
    .source("_agdx", "telemetry")
    .allow("telemetry.v1")
    .index("telemetry_rows")
    .retention(RetentionPolicy::Keep)
    .build();
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pub fn index(self, index: impl Into<String>) -> ProjectionBindingBuilder

Set the replica-local operational index name. Omit it to use the source topic name. External lakehouse destinations use the destination API.

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pub fn notify(self) -> ProjectionBindingBuilder

Opt into the change feed: one ChangeRecord per committed projector batch for this binding, on the changes topic.

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pub fn skip_rejected(self) -> ProjectionBindingBuilder

Let the managed backend skip a record it proved the destination or the extraction rejects, instead of holding the partition. The skipped record goes to the dead-letter topic. See ProjectionBinding::skip_rejected.

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pub fn build(self) -> ProjectionBinding

Build the binding. Panics if .source(..) / .selector(..) was not set (programmer error, not user input). Prefer try_build for code paths that handle config-load failures gracefully.

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pub fn try_build(self) -> Result<ProjectionBinding, InvalidError>

Build the binding, returning an error if required fields are missing instead of panicking.

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impl Default for ProjectionBindingBuilder

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fn default() -> ProjectionBindingBuilder

Returns the “default value” for a type. Read more

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