001/*
002 * Stallion Core: A Modern Web Framework
003 *
004 * Copyright (C) 2015 - 2016 Stallion Software LLC.
005 *
006 * This program is free software: you can redistribute it and/or modify it under the terms of the
007 * GNU General Public License as published by the Free Software Foundation, either version 2 of
008 * the License, or (at your option) any later version. This program is distributed in the hope that
009 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
010 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
011 * License for more details. You should have received a copy of the GNU General Public License
012 * along with this program.  If not, see <http://www.gnu.org/licenses/gpl-2.0.html>.
013 *
014 *
015 *
016 */
017
018package io.stallion.utils;
019
020import java.util.HashMap;
021import java.util.Map;
022
023import static io.stallion.utils.Literals.*;
024import static io.stallion.Context.*;
025
026
027public class DefaultMap<K, V> extends HashMap<K, V> {
028
029    public Class cls;
030
031    public DefaultMap(Class<? extends V> cls) {
032        this.cls = cls;
033    }
034
035    public DefaultMap(V prototype) {
036        this.cls = prototype.getClass();
037    }
038
039    @Override
040    public V get(Object key) {
041        if (!containsKey(key)) {
042            try {
043                put((K)key, (V) cls.newInstance());
044            } catch (Exception e) {
045                throw new RuntimeException(e);
046            }
047        }
048        return super.get(key);
049    }
050
051
052}