SubSet.hh

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/*
    Copyright (c) 2002-2009 Tampere University.
 
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/**
 * @file SubSet.hh
 *
 * Declaration of SubSet class.
 *
 * @author Tommi Rantanen 2003 (tommi.rantanen-no.spam-tut.fi)
 * @author Jari Mäntyneva 2005 (jari.mantyneva-no.spam-tut.fi)
 * @note rating: red
 */
 
#ifndef TTA_SUB_SET_HH
#define TTA_SUB_SET_HH
 
 
#include "SelectSet.hh"
 
 
/**
 * Implementation for searching database entries that have smaller
 * value or a subset of the search key in the requested field.\ In
 * addition, equal values are accepted.
 */
class SubSet: public SelectSet<&EntryKeyField::isSmaller,
                               &EntryKeyField::isGreater> {
// The implementation utilizes SelectSet template class. Template
// parameter Select is EntryKeyField::isSmaller to accept smaller
// values in the results. Furthermore, UnSelect template parameter is
// EntryKeyField::isGreater to ignore greater values.
public:
    SubSet(const EntryKeyFieldProperty* type);
    virtual ~SubSet();
 
private:
    /// Copying not allowed.
    SubSet(const SubSet&);
    /// Assignment not allowed.
    SubSet& operator=(const SubSet&);
};
 
#endif