reifydb-rql 0.9.0

ReifyDB Query Language (RQL) parser and AST
Documentation 
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// SPDX-License-Identifier: Apache-2.0
// Copyright (c) 2026 ReifyDB

use reifydb_core::{interface::catalog::flow::OperatorId, row::OperatorLateness};
use reifydb_transaction::transaction::Transaction;
use reifydb_value::Result;

use crate::{
	expression::Expression,
	flow::{
		aggregate::AggregateContext,
		compiler::{CompileOperator, FlowCompiler, operator::aggregate_validation::validate_flow_aggregations},
		operator::OperatorDef::Aggregate,
	},
	nodes::AggregateNode,
	query::QueryPlan,
};

pub(crate) struct AggregateCompiler {
	pub input: Box<QueryPlan>,
	pub by: Vec<Expression>,
	pub map: Vec<Expression>,
	pub ttl: Option<OperatorLateness>,
}

impl From<AggregateNode> for AggregateCompiler {
	fn from(node: AggregateNode) -> Self {
		Self {
			input: node.input,
			by: node.by,
			map: node.map,
			ttl: node.ttl,
		}
	}
}

impl CompileOperator for AggregateCompiler {
	fn compile(self, compiler: &mut FlowCompiler, txn: &mut Transaction<'_>) -> Result<OperatorId> {
		validate_flow_aggregations(&compiler.routines, &self.map, AggregateContext::Grouped)?;

		let input_node = compiler.compile_plan(txn, *self.input)?;

		let node_id = compiler.add_node(
			txn,
			Aggregate {
				by: self.by,
				map: self.map,
			},
		)?;

		compiler.add_edge(txn, &input_node, &node_id)?;
		compiler.write_operator_settings(txn, node_id, self.ttl)?;
		Ok(node_id)
	}
}