/* | |
* Copyright 1999-2011 Alibaba Group. | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
*/ | |
package com.alibaba.dubbo.container.page; | |
import java.io.Serializable; | |
import java.util.Comparator; | |
/** | |
* MenuComparator | |
* | |
* @author william.liangf | |
*/ | |
public class MenuComparator implements Comparator<PageHandler>, Serializable { | |
private static final long serialVersionUID = -3161526932904414029L; | |
public int compare(PageHandler o1, PageHandler o2) { | |
if (o1 == null && o2 == null) { | |
return 0; | |
} | |
if (o1 == null) { | |
return -1; | |
} | |
if (o2 == null) { | |
return 1; | |
} | |
return o1.equals(o2) ? 0 : (o1.getClass().getAnnotation(Menu.class).order() | |
> o2.getClass().getAnnotation(Menu.class).order() ? 1 : -1); | |
} | |
} |