NodeIndex.h

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/*
 * opencog/atomspace/NodeIndex.h
 *
 * Copyright (C) 2008,2015 Linas Vepstas <linasvepstas@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License v3 as
 * published by the Free Software Foundation and including the exceptions
 * at http://opencog.org/wiki/Licenses
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, write to:
 * Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef _OPENCOG_NODEINDEX_H
#define _OPENCOG_NODEINDEX_H

#include <set>
#include <vector>

#include <opencog/atomspace/NameIndex.h>
#include <opencog/atomspace/types.h>

namespace opencog
{
class NodeIndex
{
    private:
        std::vector<NameIndex> idx;

    public:
        NodeIndex();

        void insertAtom(Atom* a)
        {
            NameIndex &ni(idx[a->getType()]);
            ni.insertAtom(a);
        }
        void removeAtom(Atom* a)
        {
            NameIndex &ni(idx.at(a->getType()));
            ni.removeAtom(a);
        }
        void resize();
        size_t size() const;

        Atom* getAtom(Type type, const std::string& str) const
        {
            const NameIndex &ni(idx.at(type));
            return ni.get(str);
        }

        UnorderedHandleSet getHandleSet(Type type, const std::string&, bool subclass) const;

        template <typename OutputIterator> OutputIterator
        getHandleSet(OutputIterator result,
                     Type type, const std::string& name, bool subclass) const
        {
            if (not subclass)
            {
                Atom* atom = getAtom(type, name);
                if (atom) *result++ = atom->getHandle();
            }
            else
            {
                Type max = idx.size();
                for (Type s = 0; s < max; s++) {
                    if (classserver().isA(s, type)) {
                        Atom* atom = getAtom(s, name);
                        if (atom) *result++ = atom->getHandle();
                    }
                }
            }
            return result;
        }
};

} //namespace opencog

#endif // _OPENCOG_NODEINDEX_H