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DefaultSchemaEvolver

laminar_connectors::schema::evolution

Struct DefaultSchemaEvolver 

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pub struct DefaultSchemaEvolver {
    pub compatibility: CompatibilityMode,
}
Expand description

A general-purpose implementation of SchemaEvolvable that uses name-based schema matching (suitable for JSON, CSV, Avro, etc.).

For field-ID-based sources (Iceberg, Parquet), a specialised implementation should be used instead.

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§compatibility: CompatibilityMode

The compatibility mode for evaluating changes.

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impl DefaultSchemaEvolver

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pub fn new(compatibility: CompatibilityMode) -> Self

Creates a new evolver with the given compatibility mode.

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impl Clone for DefaultSchemaEvolver

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fn clone(&self) -> DefaultSchemaEvolver

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 DefaultSchemaEvolver

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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 DefaultSchemaEvolver

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fn default() -> Self

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

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fn diff_schemas(&self, old: &SchemaRef, new: &SchemaRef) -> Vec<SchemaChange>

Computes the differences between two schemas.
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fn evaluate_evolution(&self, changes: &[SchemaChange]) -> EvolutionVerdict

Evaluates whether a set of schema changes is acceptable.
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fn apply_evolution( &self, old: &SchemaRef, changes: &[SchemaChange], ) -> SchemaResult<ColumnProjection>

Applies schema changes, returning a column projection that maps old data to the new schema. Read more
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fn schema_version(&self) -> Option<u32>

Returns the current schema version, if tracked.

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