| using System; |
| using System.Collections.Generic; |
| using System.IO; |
| |
| namespace Lucene.Net.Replicator |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// A revision comprises lists of files that come from different sources and need |
| /// to be replicated together to e.g. guarantee that all resources are in sync. |
| /// In most cases an application will replicate a single index, and so the |
| /// revision will contain files from a single source. However, some applications |
| /// may require to treat a collection of indexes as a single entity so that the |
| /// files from all sources are replicated together, to guarantee consistency |
| /// beween them. For example, an application which indexes facets will need to |
| /// replicate both the search and taxonomy indexes together, to guarantee that |
| /// they match at the client side. |
| /// </summary> |
| /// <remarks> |
| /// @lucene.experimental |
| /// </remarks> |
| public interface IRevision : IComparable<IRevision> |
| { |
| /// <summary> |
| /// Compares the revision to the given version string. Behaves like |
| /// <see cref="IComparable{T}.CompareTo(T)"/> |
| /// </summary> |
| int CompareTo(string version); |
| |
| /// <summary> |
| /// Returns a string representation of the version of this revision. The |
| /// version is used by <see cref="CompareTo(string)"/> as well as to |
| /// serialize/deserialize revision information. Therefore it must be self |
| /// descriptive as well as be able to identify one revision from another. |
| /// </summary> |
| string Version { get; } |
| |
| /// <summary> |
| /// Returns the files that comprise this revision, as a mapping from a source |
| /// to a list of files. |
| /// </summary> |
| IDictionary<string, IList<RevisionFile>> SourceFiles { get; } |
| |
| /// <summary> |
| /// Returns a <see cref="Stream"/> for the given <paramref name="fileName"/> and <paramref name="source"/>. It is the |
| /// caller's respnsibility to dispose the <see cref="Stream"/> when it has been |
| /// consumed. |
| /// </summary> |
| /// <exception cref="IOException"></exception> |
| Stream Open(string source, string fileName); |
| |
| /// <summary> |
| /// Called when this revision can be safely released, i.e. where there are no |
| /// more references to it. |
| /// </summary> |
| /// <exception cref="IOException"></exception> |
| void Release(); |
| } |
| } |