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RankedAxis

drive::query::drive_document_ranked_query

Enum RankedAxis 

Source 
pub enum RankedAxis {
    Count,
    Sum,
    Avg,
}
Expand description

Which per-group aggregate the groups are ranked by.

Maps 1:1 onto [grovedb::element::IndexAxis], the axis tag stored in an indexed tree’s TLV and rebuilt into the PathQuery a verifier re-executes proofs against. Kept as a separate drive-side type (rather than re-exporting grovedb’s) so the query surface’s error messages and validation can talk about rankedCountable / rankedSummable / rankedAverageable — contract grammar the storage layer knows nothing about.

Variants§

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Count

Rank by the number of documents in each group. Requires the index to declare rankedCountable.

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Sum

Rank by the running sum of the index’s summable property across each group. Requires rankedSummable.

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Avg

Rank by each group’s average of the index’s summable property, as the fixed-point value described on RANKED_AVG_SCALE. Requires rankedAverageable.

Implementations§

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impl RankedAxis

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pub fn required_index_keyword(self) -> &'static str

The contract-grammar keyword an index must declare to be rankable on this axis. Used in error messages so a rejected query names the exact schema key the contract author has to add.

Trait Implementations§

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impl Clone for RankedAxis

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fn clone(&self) -> RankedAxis

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for RankedAxis

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impl Debug for RankedAxis

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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 Eq for RankedAxis

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impl From<RankedAxis> for IndexAxis

Available on crate features server or verify only.
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fn from(axis: RankedAxis) -> Self

Converts to this type from the input type.
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impl PartialEq for RankedAxis

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for RankedAxis

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