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 java.util.Collection; 023import java.util.List; 024 025import org.eclipse.aether.RepositorySystem; 026import org.eclipse.aether.RepositorySystemSession; 027import org.eclipse.aether.metadata.Metadata; 028import org.eclipse.aether.resolution.MetadataRequest; 029import org.eclipse.aether.resolution.MetadataResult; 030 031/** 032 * Resolves metadata, that is gets a local filesystem path to their binary contents. 033 * 034 * @noimplement This interface is not intended to be implemented by clients. 035 * @noextend This interface is not intended to be extended by clients. 036 * @provisional This type is provisional and can be changed, moved or removed without prior notice. 037 */ 038public interface MetadataResolver 039{ 040 041 /** 042 * Resolves the paths for a collection of metadata. Metadata will be downloaded to the local repository if 043 * necessary, e.g. because it hasn't been cached yet or the cache is deemed outdated. 044 * 045 * @param session The repository session, must not be {@code null}. 046 * @param requests The resolution requests, must not be {@code null}. 047 * @return The resolution results (in request order), never {@code null}. 048 * @see Metadata#getFile() 049 * @see RepositorySystem#resolveMetadata(RepositorySystemSession, Collection) 050 */ 051 List<MetadataResult> resolveMetadata( RepositorySystemSession session, 052 Collection<? extends MetadataRequest> requests ); 053 054}