001/* 002 * Copyright 2015 DuraSpace, Inc. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.fcrepo.kernel.modeshape.utils; 017 018import static java.util.Spliterator.IMMUTABLE; 019import static java.util.Spliterators.spliteratorUnknownSize; 020import static java.util.stream.StreamSupport.stream; 021 022import java.util.Iterator; 023import java.util.stream.Stream; 024 025/** 026 * @author acoburn 027 * @since February 10, 2016 028 */ 029public class StreamUtils { 030 031 /** 032 * Convert an Iterator to a Stream 033 * 034 * @param iterator the iterator 035 * @param <T> the type of the Stream 036 * @return the stream 037 */ 038 public static <T> Stream<T> iteratorToStream(final Iterator<T> iterator) { 039 return iteratorToStream(iterator, false); 040 } 041 042 /** 043 * Convert an Iterator to a Stream 044 * 045 * @param <T> the type of the Stream 046 * @param iterator the iterator 047 * @param parallel whether to parallelize the stream 048 * @return the stream 049 */ 050 public static <T> Stream<T> iteratorToStream(final Iterator<T> iterator, final Boolean parallel) { 051 return stream(spliteratorUnknownSize(iterator, IMMUTABLE), parallel); 052 } 053 private StreamUtils() { 054 // prevent instantiation 055 } 056} 057