001package org.eclipse.aether.impl; 002 003/* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022import org.eclipse.aether.RepositorySystem; 023import org.eclipse.aether.RepositorySystemSession; 024import org.eclipse.aether.SyncContext; 025 026/** 027 * A factory to create synchronization contexts. A synchronization context is used to coordinate concurrent access to 028 * artifacts or metadata. 029 * 030 * @provisional This type is provisional and can be changed, moved or removed without prior notice. 031 */ 032public interface SyncContextFactory 033{ 034 035 /** 036 * Creates a new synchronization context. 037 * 038 * @param session The repository session during which the context will be used, must not be {@code null}. 039 * @param shared A flag indicating whether access to the artifacts/metadata associated with the new context can be 040 * shared among concurrent readers or whether access needs to be exclusive to the calling thread. 041 * @return The synchronization context, never {@code null}. 042 * @see RepositorySystem#newSyncContext(RepositorySystemSession, boolean) 043 */ 044 SyncContext newInstance( RepositorySystemSession session, boolean shared ); 045 046}