pub struct LinearOperator {
    pub predicates: Vec<MirScalarExpr>,
    pub projection: Vec<usize>,
}
Expand description

In-place restrictions that can be made to rows.

These fields indicate optional information that may applied to streams of rows. Any row that does not satisfy all predicates may be discarded, and any column not listed in the projection may be replaced by a default value.

The intended order of operations is that the predicates are first applied, and columns not in projection can then be overwritten with default values. This allows the projection to avoid capturing columns used by the predicates but not otherwise required.

Fields

predicates: Vec<MirScalarExpr>

Rows that do not pass all predicates may be discarded.

projection: Vec<usize>

Columns not present in projection may be replaced with default values.

Implementations

Reports whether this linear operator is trivial when applied to an input of the specified arity.

Trait Implementations

The type of parameters that arbitrary_with accepts for configuration of the generated Strategy. Parameters must implement Default. Read more

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