TableSpec

egglog_core_relations

Struct TableSpec 

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pub struct TableSpec {
    pub n_keys: usize,
    pub n_vals: usize,
    pub uncacheable_columns: DenseIdMap<ColumnId, bool>,
    pub allows_delete: bool,
}

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§n_keys: usize

The number of key columns for the table.

§n_vals: usize

The number of non-key (i.e. value) columns in the table.

The total “arity” of the table is n_keys + n_vals.

§uncacheable_columns: DenseIdMap<ColumnId, bool>

Columns that cannot be cached across generations.

These columns should (e.g.) never have indexes built for them, as they will go out of date too quickly.

§allows_delete: bool

Whether or not deletions are supported for this table.

Tables where this value is false are allowed to panic on calls to stage_remove.

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impl TableSpec

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pub fn arity(&self) -> usize

The total number of columns stored by the table.

Trait Implementations§

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impl Clone for TableSpec

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fn clone(&self) -> TableSpec

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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