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LookupSourceCapabilities

laminar_core::lookup::source

Struct LookupSourceCapabilities 

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pub struct LookupSourceCapabilities {
    pub supports_predicate_pushdown: bool,
    pub supports_projection_pushdown: bool,
    pub supports_batch_lookup: bool,
    pub max_batch_size: usize,
}
Expand description

Capabilities that a lookup source advertises.

This describes source-level capabilities (batch support, pushdown support) rather than per-column capabilities (which are described by SourceCapabilities).

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§supports_predicate_pushdown: bool

Whether the source supports predicate pushdown.

§supports_projection_pushdown: bool

Whether the source supports projection pushdown.

§supports_batch_lookup: bool

Whether the source supports batch lookups.

§max_batch_size: usize

Maximum batch size for batch lookups (0 = unlimited).

Implementations§

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impl LookupSourceCapabilities

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pub fn none() -> Self

Create capabilities with no pushdown support.

Trait Implementations§

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impl Clone for LookupSourceCapabilities

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fn clone(&self) -> LookupSourceCapabilities

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for LookupSourceCapabilities

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

Formats the value using the given formatter. Read more
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impl Default for LookupSourceCapabilities

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fn default() -> LookupSourceCapabilities

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

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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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