Trait ArrayReduceRule 

pub trait ArrayReduceRule<V: VTable>:
    Debug
    + Send
    + Sync
    + 'static {
    // Required method
    fn reduce(&self, array: &V::Array) -> VortexResult<Option<ArrayRef>>;
}

A metadata-only rewrite rule that transforms an array based on its own structure (Layer 1).

These rules look only at the array’s metadata and children types (not buffer contents) and return a structurally simpler replacement, or None if the rule doesn’t apply.

Required Methods

fn reduce(&self, array: &V::Array) -> VortexResult<Option<ArrayRef>>

Attempt to rewrite this array.

Returns:

• Ok(Some(new_array)) if the rule applied successfully
• Ok(None) if the rule doesn’t apply
• Err(e) if an error occurred

Implementors