Struct CompiledCrossJoin 

pub struct CompiledCrossJoin { /* private fields */ }

Available on crate feature transform-cross-join only.

Validated CrossJoinSpec — apply per record with CompiledCrossJoin::apply.

Implementations

impl CompiledCrossJoin

pub fn apply(&self, rec: Value) -> Result<Vec<Value>, FaucetError>

Expand one record into the cartesian product of its named sibling arrays. Non-object records pass through unchanged. Missing or null named fields are treated as empty sets (subject to on_empty); a field that is present but not an array is an error, so an upstream type change cannot silently drop whole records (CORE-59). A produced column that would overwrite an existing one (a parent field, or a field of an earlier array) is an error too — set prefix: true to keep both (CORE-33).

Trait Implementations

impl Clone for CompiledCrossJoin

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompiledCrossJoin

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.