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/*
* Copyright (C) 2013-2015, 2019 by the Konclude Developer Team.
*
* This file is part of the reasoning system Konclude.
* For details and support, see <http://konclude.com/>.
*
* Konclude is free software: you can redistribute it and/or modify
* it under the terms of version 3 of the GNU Lesser General Public
* License (LGPLv3) as published by the Free Software Foundation.
*
* Konclude is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU (Lesser) General Public License for more details.
*
* You should have received a copy of the GNU (Lesser) General Public
* License along with Konclude. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef KONCLUDE_REDLAND_INTEGRATION
#ifndef KONCLUDE_REASONER_TRIPLES_CREDLANDURIHASHER_H
#define KONCLUDE_REASONER_TRIPLES_CREDLANDURIHASHER_H
// Libraries includes
#include <QHash>
#include <librdf.h>
// Namespace includes
#include "TriplesSettings.h"
// Other includes
#include "Utilities/UtilitiesSettings.h"
// Logger includes
#include "Logger/CLogger.h"
namespace Konclude {
using namespace Utilities;
namespace Reasoner {
namespace Triples {
/*!
*
* \class CRedlandUriHasher
* \author Andreas Steigmiller
* \version 0.1
* \brief TODO
*
*/
class CRedlandUriHasher {
// public methods
public:
//! Constructor
CRedlandUriHasher(librdf_uri* uri) {
mUri = uri;
mHashValue = hash_c_string((const char*)librdf_uri_as_string(mUri));
}
cint64 getUriHashValue() const {
return mHashValue;
}
bool operator==(const CRedlandUriHasher& uriHasher) const {
if (mHashValue != uriHasher.getUriHashValue()) {
return false;
}
if (!librdf_uri_equals(mUri, uriHasher.mUri)) {
return false;
}
return true;
}
cint64 hash_c_string(const char* p) {
cint64 result = 0;
const cint64 prime = 31;
for (cint64 i = 0; p[i] != 0; ++i) {
result = p[i] + (result * prime);
}
return result;
}
// protected methods
protected:
// protected variables
protected:
librdf_uri* mUri;
cint64 mHashValue;
// private methods
private:
// private variables
private:
};
inline uint qHash(const CRedlandUriHasher& uriHasher) {
qint64 key = (qint64)uriHasher.getUriHashValue();
if (sizeof(quint64) > sizeof(uint)) {
return uint((key >> (8 * sizeof(uint) - 1)) ^ key);
} else {
return uint(key);
}
}
}; // end namespace Triples
}; // end namespace Reasoner
}; // end namespace Konclude
#endif // KONCLUDE_REASONER_TRIPLES_CREDLANDURIHASHER_H
#endif // !KONCLUDE_REDLAND_INTEGRATION
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