| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.kylin.rest.util; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| public class PagingUtil { |
| |
| public static <T> List<T> cutPage(List<T> full, int offset, int limit) { |
| if (full == null) |
| return null; |
| |
| int begin = offset; |
| int end = offset + limit; |
| |
| return cut(full, begin, end); |
| } |
| |
| private static <T> List<T> cut(List<T> full, int begin, int end) { |
| if (begin >= full.size()) |
| return Collections.emptyList(); |
| |
| if (end > full.size()) |
| end = full.size(); |
| |
| return full.subList(begin, end); |
| } |
| } |