| /* |
| * 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.jena.util; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.jena.util.iterator.NiceIterator ; |
| |
| |
| /** |
| */ |
| public class IteratorCollection |
| { |
| /** |
| Only static methods here - the class cannot be instantiated. |
| */ |
| private IteratorCollection() |
| {} |
| |
| /** |
| Answer the elements of the given iterator as a set. The iterator is consumed |
| by the operation. Even if an exception is thrown, the iterator will be closed. |
| @param i the iterator to convert |
| @return A set of the members of i |
| */ |
| public static <T> Set<T> iteratorToSet( Iterator<? extends T> i ) |
| { |
| Set<T> result = CollectionFactory.createHashedSet(); |
| try { while (i.hasNext()) result.add( i.next() ); } |
| finally { NiceIterator.close( i ); } |
| return result; |
| } |
| |
| /** |
| Answer the elements of the given iterator as a list, in the order that they |
| arrived from the iterator. The iterator is consumed by this operation: |
| even if an exception is thrown, the iterator will be closed. |
| @param it the iterator to convert |
| @return a list of the elements of <code>it</code>, in order |
| */ |
| public static <T> List<T> iteratorToList( Iterator<? extends T> it ) |
| { |
| List<T> result = new ArrayList<>(); |
| try { while (it.hasNext()) result.add( it.next() ); } |
| finally { NiceIterator.close( it ); } |
| return result; |
| } |
| |
| } |