1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one
3  * or more contributor license agreements.  See the NOTICE file
4  * distributed with this work for additional information
5  * regarding copyright ownership.  The ASF licenses this file
6  * to you under the Apache License, Version 2.0 (the
7  * "License"); you may not use this file except in compliance
8  * with the License.  You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing,
13  * software distributed under the License is distributed on an
14  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15  * KIND, either express or implied.  See the License for the
16  * specific language governing permissions and limitations
17  * under the License.
18  */
19 
20 package org.apache.commons.compress.parallel;
21 
22 import java.io.InputStream;
23 
24 /**
25  * Supplies input streams.
26  *
27  * Implementations are required to support thread-handover. While an instance will
28  * not be accessed concurrently by multiple threads, it will be called by
29  * a different thread than it was created on.
30  *
31  * @since 1.10
32  */
33 public interface InputStreamSupplier {
34 
35     /**
36      * Supply an input stream for a resource.
37      * @return the input stream. Should never null, but may be an empty stream.
38      */
get()39     InputStream get();
40 }
41