package pt.ist.fenixframework.plugins.luceneIndexing.domain;

import pt.ist.fenixframework.pstm.PersistentRoot;

public class LuceneSearchPluginRoot extends LuceneSearchPluginRoot_Base {

    private static LuceneSearchPluginRoot instance = null;

    private LuceneSearchPluginRoot() {
        super();
        LuceneSearchPluginRoot root = PersistentRoot.getRoot(LuceneSearchPluginRoot.class.getName());
        if (root != null && root != this) {
            throw new Error("Trying to create a 2nd instance of LuceneSearchPluginRoot! That, my friend, is not allowed!");
        }

    }

    public static LuceneSearchPluginRoot getInstance() {
        if (instance == null) {
            instance = PersistentRoot.getRoot(LuceneSearchPluginRoot.class.getName());
            if (instance == null) {
                instance = new LuceneSearchPluginRoot();
                PersistentRoot.addRoot(LuceneSearchPluginRoot.class.getName(), instance);
            }
        }
        return instance;
    }
}