Function ExecutionPlan_FromTLS_AST

src/execution_plan/execution_plan.c:350–374

}

ExecutionPlan *ExecutionPlan_FromTLS_AST(void) {
	AST *ast = QueryCtx_GetAST();

	// handle UNION if there are any
	bool union_query = AST_ContainsClause(ast, CYPHER_AST_UNION);
	if(union_query) return _ExecutionPlan_UnionPlans(ast);

	// execution plans are created in 1 or more segments
	ExecutionPlan **segments = _process_segments(ast);
	ASSERT(segments != NULL);
	uint segment_count = array_len(segments);
	ASSERT(segment_count > 0);

	// connect all segments into a single ExecutionPlan
	ExecutionPlan *plan = _tie_segments(segments, segment_count);

	// the root operation is OpResults only if the query culminates in a RETURN
	// or CALL clause
	_implicit_result(plan);

	// clean up
	array_free(segments);

	return plan;
}

void ExecutionPlan_PreparePlan(ExecutionPlan *plan) {
	// Plan should be prepared only once.