LauKMatrixPropFactory.cc

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// Copyright University of Warwick 2008 - 2013.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

// Authors:
// Thomas Latham
// John Back
// Paul Harrison

// Class for storing K-matrix propagator objects
// using the factory method.

#include "LauKMatrixPropFactory.hh"
#include "LauKMatrixPropagator.hh"

#include <iostream>
using std::cout;
using std::endl;

// the singleton instance
LauKMatrixPropFactory* LauKMatrixPropFactory::theFactory_ = 0;

LauKMatrixPropFactory::LauKMatrixPropFactory()
{
        // Constructor
        map_.clear();
}

LauKMatrixPropFactory::~LauKMatrixPropFactory() 
{
        // Destructor
        KMatrixPropMap::iterator iter;
        for (iter = map_.begin(); iter != map_.end(); ++iter) {
                LauKMatrixPropagator* thePropagator = iter->second;
                delete thePropagator;
        }
        map_.clear();
}

LauKMatrixPropFactory* LauKMatrixPropFactory::getInstance()
{
        if (theFactory_ == 0) {
                theFactory_ = new LauKMatrixPropFactory();
        }
        return theFactory_;
}

LauKMatrixPropagator* LauKMatrixPropFactory::getPropagator(const TString& name, const TString& paramFileName, 
                                                           Int_t resPairAmpInt, Int_t nChannels, 
                                                           Int_t nPoles, Int_t rowIndex)
{
        LauKMatrixPropagator* thePropagator(0);

        KMatrixPropMap::iterator iter = map_.find(name);

        if ( iter != map_.end() ) {
                // We have already made this propagator
                thePropagator = iter->second;
        } else {
                // The propagator does not exist. Create it and store it in the map.
                thePropagator = new LauKMatrixPropagator(name, paramFileName, resPairAmpInt, 
                                                         nChannels, nPoles, rowIndex);
                map_[name] = thePropagator;
        }

        return thePropagator;
}