Mercurial > hg > release > thermostat-1.0
view storage/core/src/main/java/com/redhat/thermostat/storage/core/Key.java @ 1412:a0592d702416
Update copyright year in release branch.
reviewed-by: neugens
review-thread: http://icedtea.classpath.org/pipermail/thermostat/2014-June/009965.html
PR1821
author | Jon VanAlten <jon.vanalten@redhat.com> |
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date | Tue, 03 Jun 2014 11:55:56 -0600 |
parents | b4637cac2cbc |
children |
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/* * Copyright 2012-2014 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * Thermostat 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 General Public License * along with Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.storage.core; import java.util.Objects; /** * Keys are attributes in {@link Category}s. Think of them as * column names in a table if you're familiar with SQL. */ public class Key<T> { // Keys used by most Categories. public static final Key<Long> TIMESTAMP = new Key<>("timeStamp"); public static final Key<String> AGENT_ID = new Key<>("agentId"); public static final Key<String> VM_ID = new Key<>("vmId"); public static final Key<String> ID = new Key<>("_id"); private String name; public Key() { // This is used only in de-serialization, e.g. using Gson, and therefore // we do not check the name for null or empty. super(); } public Key(String name) { if (name == null || name.length() == 0) { throw new IllegalArgumentException("A Key must have a non-null name of length >= 1."); } this.name = name; } public String getName() { return name; } public void setName(String name) { this.name = name; } @Override public boolean equals(Object o) { if (this == o) { return true; } if ((o == null) || (o.getClass() != this.getClass())) { return false; } Key<?> e = (Key<?>) o; return name.equals(e.getName()); } @Override public int hashCode() { return Objects.hash(name); } @Override public String toString() { return "Key: " + name; } }