Struct PhysicalExprEncodeCtx 

pub struct PhysicalExprEncodeCtx<'a> { /* private fields */ }

Available on crate feature proto only.

Encoder context handed to super::PhysicalExpr::try_to_proto.

Wraps an internal PhysicalExprEncode trait object so callers see a stable concrete type while implementations can evolve in datafusion-proto.

Implementations

impl<'a> PhysicalExprEncodeCtx<'a>

pub fn new(encoder: &'a dyn PhysicalExprEncode) -> Self

Construct a new encode context. Typically called by datafusion-proto; expression authors receive &PhysicalExprEncodeCtx.

pub fn encode_child( &self, expr: &Arc<dyn PhysicalExpr>, ) -> Result<PhysicalExprNode>

Encode a child expression. Routes through the configured encoder so dedup-aware encoding is preserved.

pub fn encode_children_expressions<'b, I>( &self, exprs: I, ) -> Result<Vec<PhysicalExprNode>>

where I: IntoIterator<Item = &'b Arc<dyn PhysicalExpr>>,

Encode a sequence of child expressions, preserving order.

Convenience wrapper over Self::encode_child for expressions holding a repeated proto field (e.g. the list of an InList). The first encode error short-circuits.