// CompoundDatasetMergerCreator.cxx

#include "dataset_split/CompoundDatasetMergerCreator.h"
#include <iostream>
#include "dataset_util/XmlElement.h"
#include "dataset_util/DtdRegistry.h"
#include "dataset_split/CompoundDatasetMerger.h"

using std::string;
using std::ostream;
using std::auto_ptr;
using dset::DatasetMerger;
using dset::DatasetMergerCreator;
using dset::CompoundDatasetMerger;
using dset::CompoundDatasetMergerCreator;

//**********************************************************************
// Local definitions.
//**********************************************************************

namespace {

// Creator.
const DatasetMergerCreator* create(const XmlElement& ele) {
  assert( ele.name() == CompoundDatasetMergerCreator::xml_name() );
  if ( ele.name() != CompoundDatasetMergerCreator::xml_name() ) return 0;
  return new CompoundDatasetMergerCreator;
}

// Register creator.
int CompoundDatasetMergerCreator_xml_stat =
  DatasetMergerCreator::register_creator(
    CompoundDatasetMergerCreator::xml_name(), create);

// Register the DTD.
DtdRegistry::Status CompoundDatasetMerger_dtd_stat =
  DtdRegistry::register_dtd<CompoundDatasetMergerCreator>("dataset");

}  // end unnamed namespace.

//**********************************************************************
// Static member functions
//**********************************************************************

// DTD

const Text& CompoundDatasetMergerCreator::dtd() {
  static Text txt;
  if ( txt.size() == 0 ) {
    txt.append("<!ELEMENT CompoundDatasetMergerCreator EMPTY>");
  }
  return txt;
}

//**********************************************************************
// Member functions
//**********************************************************************

// Constructor.

CompoundDatasetMergerCreator::CompoundDatasetMergerCreator() { }

//**********************************************************************

// Validity

bool CompoundDatasetMergerCreator::is_valid() const {
  return true;
}

//**********************************************************************

// Return a new merger instance.

DatasetMerger* CompoundDatasetMergerCreator::create(string dir) const {
  return new CompoundDatasetMerger(dir);
}

//**********************************************************************

// Write to XML.

const XmlElement* CompoundDatasetMergerCreator::xml() const {
  auto_ptr<XmlElement>
    pele(new XmlElement(CompoundDatasetMergerCreator::xml_name()));
  return pele.release();
}

//**********************************************************************

// Output stream.

ostream& CompoundDatasetMergerCreator::ostr(std::ostream& str) const {
  str << "Compound dataset merger creator";
  return str;
}

//**********************************************************************