/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*                  This file is part of the program                         */
/*          GCG --- Generic Column Generation                                */
/*                  a Dantzig-Wolfe decomposition based extension            */
/*                  of the branch-cut-and-price framework                    */
/*         SCIP --- Solving Constraint Integer Programs                      */
/*                                                                           */
/* Copyright (C) 2010-2021 Operations Research, RWTH Aachen University       */
/*                         Zuse Institute Berlin (ZIB)                       */
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**@file   dec_mastersetcover.cpp
 * @ingroup DETECTORS
 * @brief  detector mastersetcover (sets setcovering and logicor constraint to master)
 * @author Martin Bergner
 */

/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/

#include "dec_mastersetcover.h"
#include "cons_decomp.h"
#include "class_partialdecomp.h"
#include "class_detprobdata.h"
#include "gcg.h"
#include "scip/cons_setppc.h"
#include "scip/scip.h"
#include "scip_misc.h"
#include "scip/clock.h"

#include <iostream>

/* constraint handler properties */
#define DEC_DETECTORNAME          "mastersetcover"       /**< name of detector */
#define DEC_DESC                  "detector mastersetcover" /**< description of detector*/
#define DEC_FREQCALLROUND         1           /**< frequency the detector gets called in detection loop ,ie it is called in round r if and only if minCallRound <= r <= maxCallRound AND  (r - minCallRound) mod freqCallRound == 0 */
#define DEC_MAXCALLROUND          INT_MAX     /**< last round the detector gets called                              */
#define DEC_MINCALLROUND          0           /**< first round the detector gets called                              */
#define DEC_FREQCALLROUNDORIGINAL 1           /**< frequency the detector gets called in detection loop while detecting the original problem   */
#define DEC_MAXCALLROUNDORIGINAL  INT_MAX     /**< last round the detector gets called while detecting the original problem                            */
#define DEC_MINCALLROUNDORIGINAL  0           /**< first round the detector gets called while detecting the original problem    */
#define DEC_PRIORITY              0           /**< priority of the constraint handler for separation */
#define DEC_DECCHAR               '?'         /**< display character of detector */
#define DEC_ENABLED               TRUE        /**< should the detection be enabled */
#define DEC_ENABLEDFINISHING      FALSE       /**< should the finishing be enabled */
#define DEC_ENABLEDPOSTPROCESSING FALSE          /**< should the postprocessing be enabled */
#define DEC_SKIP                  FALSE       /**< should detector be skipped if other detectors found decompositions */
#define DEC_USEFULRECALL          FALSE       /**< is it useful to call this detector on a descendant of the propagated partialdec */


/*
 * Data structures
 */

/** @todo fill in the necessary detector data */

/** detector handler data */
struct DEC_DetectorData
{
};

/*
 * Local methods
 */

/* put your local methods here, and declare them static */

/*
 * detector callback methods
 */

/** destructor of detector to free user data (called when GCG is exiting) */
#define freeMastersetcover NULL

/** destructor of detector to free detector data (called before the solving process begins) */
#define exitMastersetcover NULL

/** detection initialization function of detector (called before solving is about to begin) */
#define initMastersetcover NULL


static DEC_DECL_PROPAGATEPARTIALDEC(propagatePartialdecMastersetcover)
{
   *result = SCIP_DIDNOTFIND;

   SCIP_CLOCK* temporaryClock;
   SCIP_CALL_ABORT(SCIPcreateClock(scip, &temporaryClock) );
   SCIP_CALL_ABORT( SCIPstartClock(scip, temporaryClock) );

   SCIP_CONS* cons;

   gcg::PARTIALDECOMP* partialdec = partialdecdetectiondata->workonpartialdec;

   /* set open setcovering constraints to Master */
   auto& openconss = partialdec->getOpenconssVec();
   for( auto itr = openconss.cbegin(); itr != openconss.cend(); )
   {
      cons = partialdecdetectiondata->detprobdata->getCons(*itr);
      if( GCGconsGetType(scip, cons) == setcovering || GCGconsGetType(scip, cons) == logicor )
      {
          itr = partialdec->fixConsToMaster(itr);
      }
      else
      {
         ++itr;
      }
   }

   partialdec->sort();
   SCIP_CALL_ABORT( SCIPstopClock(scip, temporaryClock) );

   partialdecdetectiondata->detectiontime = SCIPgetClockTime(scip, temporaryClock);
   SCIP_CALL( SCIPallocMemoryArray(scip, &(partialdecdetectiondata->newpartialdecs), 1) );
   partialdecdetectiondata->newpartialdecs[0] = partialdec;
   partialdecdetectiondata->nnewpartialdecs = 1;
   partialdecdetectiondata->newpartialdecs[0]->addClockTime(SCIPgetClockTime(scip, temporaryClock));
   partialdecdetectiondata->newpartialdecs[0]->addDetectorChainInfo(DEC_DETECTORNAME);
   // we used the provided partialdec -> prevent deletion
   partialdecdetectiondata->workonpartialdec = NULL;
   SCIP_CALL_ABORT(SCIPfreeClock(scip, &temporaryClock) );

   *result = SCIP_SUCCESS;

   return SCIP_OKAY;
}
/*
 * detector specific interface methods
 */

#define finishPartialdecMastersetcover NULL
#define detectorPostprocessPartialdecMastersetcover NULL
#define setParamAggressiveMastersetcover NULL
#define setParamDefaultMastersetcover NULL
#define setParamFastMastersetcover NULL


/** creates the handler for mastersetcover detector and includes it in SCIP */
SCIP_RETCODE SCIPincludeDetectorMastersetcover(SCIP* scip /**< SCIP data structure */
)
{
   DEC_DETECTORDATA* detectordata;

   /**@todo create mastersetcover detector data here*/
   detectordata = NULL;

   SCIP_CALL(
      DECincludeDetector(scip, DEC_DETECTORNAME, DEC_DECCHAR, DEC_DESC, DEC_FREQCALLROUND,
         DEC_MAXCALLROUND, DEC_MINCALLROUND, DEC_FREQCALLROUNDORIGINAL, DEC_MAXCALLROUNDORIGINAL, DEC_MINCALLROUNDORIGINAL, DEC_PRIORITY, DEC_ENABLED, DEC_ENABLEDFINISHING,DEC_ENABLEDPOSTPROCESSING, DEC_SKIP,
         DEC_USEFULRECALL, detectordata, freeMastersetcover,
         initMastersetcover, exitMastersetcover, propagatePartialdecMastersetcover, finishPartialdecMastersetcover, detectorPostprocessPartialdecMastersetcover, setParamAggressiveMastersetcover, setParamDefaultMastersetcover, setParamFastMastersetcover));

   /**@todo add mastersetcover detector parameters */

   return SCIP_OKAY;
}




