//---------------------------------------------------------------------------
//	Greenplum Database
//	Copyright (C) 2012 Greenplum, Inc.
//
//	@filename:
//		CGPOptimizer.h
//
//	@doc:
//		Entry point to GP optimizer
//
//	@test:
//
//
//---------------------------------------------------------------------------
#ifndef CGPOptimizer_H
#define CGPOptimizer_H

#include "postgres.h"
#include "nodes/params.h"
#include "nodes/plannodes.h"
#include "nodes/parsenodes.h"

class CGPOptimizer
{
public:
	// optimize given query using GP optimizer
	static PlannedStmt *GPOPTOptimizedPlan(
		Query *query,
		bool *
			had_unexpected_failure	// output : set to true if optimizer unexpectedly failed to produce plan
	);

	// serialize planned statement into DXL
	static char *SerializeDXLPlan(Query *query);

	// gpopt initialize and terminate
	static void InitGPOPT();

	static void TerminateGPOPT();
};

extern "C" {

extern PlannedStmt *GPOPTOptimizedPlan(Query *query,
									   bool *had_unexpected_failure);
extern char *SerializeDXLPlan(Query *query);
extern void InitGPOPT();
extern void TerminateGPOPT();
}

#endif	// CGPOptimizer_H