/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
/*-------------------------------------------------------------------------
*
* nodeExternalscan.h
*
*-------------------------------------------------------------------------
*/
#ifndef NODEEXTERNALSCAN_H
#define NODEEXTERNALSCAN_H

#include "nodes/execnodes.h"

extern int	ExecCountSlotsExternalScan(ExternalScan *node);
extern ExternalScanState *ExecInitExternalScan(ExternalScan *node, EState *estate, int eflags);
extern TupleTableSlot *ExecExternalScan(ExternalScanState *node);
extern void ExecEndExternalScan(ExternalScanState *node);
extern void ExecStopExternalScan(ExternalScanState *node);
extern void ExecExternalReScan(ExternalScanState *node, ExprContext *exprCtxt);
extern void ExecEagerFreeExternalScan(ExternalScanState *node);

enum {
    GPMON_EXTSCAN_RESCAN = GPMON_QEXEC_M_NODE_START,
    GPMON_EXTSCAN_TOTAL,
};

static inline gpmon_packet_t *GpmonPktFromExtScanState(ExternalScanState *node)
{
	return &node->ss.ps.gpmon_pkt;
}


#endif   /* NODEEXTERNALSCAN_H */