| package org.apache.archiva.components.rest.util; |
| |
| /* |
| * 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. |
| */ |
| |
| |
| import org.apache.archiva.components.rest.model.PagedResult; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * Helper class for creating paged results. |
| * |
| * @author Martin Stockhammer <martin_s@apache.org> |
| */ |
| public class PagingHelper |
| { |
| public static <T> PagedResult<T> getResultFromList( int offset, int limit, List<T> data) { |
| if (offset>=data.size()) { |
| return new PagedResult<>( data.size( ), offset, limit, Collections.emptyList( ) ); |
| } |
| int lastIndex = getLastIndex( offset, limit, data.size( ) ); |
| return new PagedResult<>( data.size(), offset, limit, data.subList( offset, lastIndex ) ); |
| } |
| |
| public static int getLastIndex(int offset, int limit, int listSize) { |
| return Math.min( Math.max( 0, offset + limit ), listSize ); |
| } |
| |
| |
| } |