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package org.semanticweb.owlapitools.decomposition;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * Atomic ontology structure.
 */
public class AtomList {

    /**
     * all the atoms
     */
    private final List atoms = new ArrayList<>();

    /**
     * @return a new atom
     */
    public OntologyAtom newAtom() {
        OntologyAtom ret = new OntologyAtom();
        ret.setId(atoms.size());
        atoms.add(ret);
        return ret;
    }

    /**
     * reduce graph of the atoms in the structure
     */
    public void reduceGraph() {
        Set checked = new HashSet<>();
        for (OntologyAtom p : atoms) {
            p.getAllDepAtoms(checked);
        }
    }

    /**
     * @param index index of the atom to retrieve
     * @return atom with index
     */
    public OntologyAtom get(int index) {
        return atoms.get(index);
    }

    /**
     * @return size of the structure
     */
    public int size() {
        return atoms.size();
    }
}