C# Metadata类代码示例

        private static StorageProviderItem CreateStorageProviderItem(StorageProviderItem parent, Metadata item)
        {
            var result = new StorageProviderItem
            {
                Name = item.Name,
                Id = Path.Combine(parent.Id, item.PathLower),
                ParentReferenceId = parent.Id
            };

            if (item.IsFile)
            {
                result.Type = StorageProviderItemType.File;
//                result.Id = item.AsFile.Id; // Path.Combine(parent.Id, item.PathLower)
                result.LastModifiedDateTime = item.AsFile.ServerModified;
            }
            else if (item.IsFolder)
            {
                result.Type = StorageProviderItemType.Folder;
//                result.Id = item.AsFolder.Id; // Path.Combine(parent.Id, item.PathLower);
            }
            else
            {
                result.Type = StorageProviderItemType.Unknown;
            }

            return result;
        }

 public unsafe PdbInfo(IO.FileStream inputStream, Metadata.Reader reader)
 {
   this.reader = reader;
   this.pdbFunctionMap = PdbFile.LoadFunctionMap(inputStream, out tokenToSourceMapping, out sourceServerData, reader);
   //inputStream.Seek(0L, IO.SeekOrigin.Begin);
   //this.remapTable = PdbFile.LoadRemapTable(inputStream);
 }

 public Asset (string name, string desc, Model[] models, Metadata data, Location location) {
     this.name = name;
     this.desc = desc;
     this.models = models;
     this.data = data;
     this.location = location;
 }

		public TextExtractionResult Extract(Func<Metadata, InputStream> streamFactory)
		{
			try
			{
				var parser = new AutoDetectParser();
				var metadata = new Metadata();
				var outputWriter = new StringWriter();
				var parseContext = new ParseContext();

                //use the base class type for the key or parts of Tika won't find a usable parser
				parseContext.set(typeof(org.apache.tika.parser.Parser), parser);
				
				using (var inputStream = streamFactory(metadata))
				{
					try
					{
						parser.parse(inputStream, getTransformerHandler(outputWriter), metadata, parseContext);
					}
					finally
					{
						inputStream.close();
					}
				}

				return assembleExtractionResult(outputWriter.ToString(), metadata);
			}
			catch (Exception ex)
			{
				throw new TextExtractionException("Extraction failed.", ex);
			}
		}

        /// <summary>
        /// The order mapping is a file named order in the same virtual path.
        /// </summary>
        private static Func<string, Metadata> GetMetadataMapping(string virtualPath) {
            var vpp = HostingEnvironment.VirtualPathProvider;
            string metadataFile = VirtualPathUtility.AppendTrailingSlash(virtualPath) + MetadataFile;

            var mapping = new Dictionary<string, Metadata>();
            int index = 0;
            if (vpp.FileExists(metadataFile)) {
                VirtualFile file = vpp.GetFile(metadataFile);
                Stream stream = file.Open();
                using (var reader = new StreamReader(stream)) {
                    string line = null;
                    while ((line = reader.ReadLine()) != null) {
                        mapping[Normalize(line)] = new Metadata {
                            Order = index++
                        };
                    }
                }
            }

            return title => {
                Metadata metadata;
                if (mapping.TryGetValue(title, out metadata)) {
                    return metadata;
                }
                return Metadata.Empty;
            };
        }

 public void Should_Schedule_Reconnections_In_The_Background()
 {
     var lbp = new RoundRobinPolicy();
     var config = new Configuration(
         new Cassandra.Policies(lbp, new ConstantReconnectionPolicy(1000), FallthroughRetryPolicy.Instance),
         new ProtocolOptions(),
         null,
         new SocketOptions(),
         new ClientOptions(),
         NoneAuthProvider.Instance,
         null,
         new QueryOptions(),
         new DefaultAddressTranslator());
     var testCluster = TestClusterManager.GetNonShareableTestCluster(1, DefaultMaxClusterCreateRetries, true, false);
     var metadata = new Metadata(config);
     metadata.AddHost(new IPEndPoint(IPAddress.Parse(testCluster.InitialContactPoint), ProtocolOptions.DefaultPort));
     var clusterMock = new Mock<ICluster>();
     clusterMock.Setup(c => c.AllHosts()).Returns(() => metadata.Hosts.ToCollection());
     lbp.Initialize(clusterMock.Object);
     using (var cc = NewInstance(testCluster, config, metadata))
     {
         cc.Init();
         var host = metadata.Hosts.First();
         testCluster.Stop(1);
         host.SetDown();
         Thread.Sleep(2000);
         Assert.False(host.IsUp);
         testCluster.Start(1);
         host.BringUpIfDown();
         //Should reconnect using timer
         Thread.Sleep(5000);
         Assert.DoesNotThrow(() => cc.Query("SELECT key FROM system.local", false));
     }
     testCluster.ShutDown();
 }

        public async Task<Metadata> SaveData(StoreLocation location, Metadata metadata, UpdateAuditInfo audit, Func<IWriteAsyncStream, Task<long?>> savingFunc, CancellationToken token)
        {
            var current = await GetMetadata(location).ConfigureAwait(false);

            var info = current == null ? new AuditInfo() : current.Audit;
            info.UpdatedBy = audit == null ? "0" : audit.UpdatedBy;
            info.UpdatedByName = audit == null ? string.Empty : audit.UpdatedByName;
            info.UpdatedOn = DateTime.UtcNow;

            info.CreatedBy = info.CreatedBy ?? info.UpdatedBy;
            info.CreatedByName = info.CreatedByName ?? info.UpdatedByName;
            info.CreatedOn = info.CreatedOn ?? info.UpdatedOn;

            metadata = metadata ?? new Metadata();
            metadata.Audit = info;

            var key = GetObjectKey(location);
            long? length = null;
            using(var stream = new AmazonMultiUploadStream(_client, _bucket, key, metadata))
            {
                length = await savingFunc(stream).ConfigureAwait(false);
                await stream.Complete(token).ConfigureAwait(false);
                metadata.Snapshot = stream.VersionId;
            }

            if (length.HasValue && (metadata == null || !metadata.ContentLength.HasValue))
            {
                metadata[MetadataConstants.ContentLengthMetadataKey] = length.Value.ToString(CultureInfo.InvariantCulture);

                // Save the length straight away before the snapshot...
                metadata = await SaveMetadata(location, metadata).ConfigureAwait(false);
            }

            return metadata;
        }

		public void TestConstructFromDictionary1()
		{
			string owner = "Washington State University Libraries";
			string ownerGroup = "Washington State University";
			string[] coOwners = { "CoOwner1", "CoOwner2" };
			long created = DateTime.Now.ToBinary();
			long updated = DateTime.Now.AddDays(1).ToBinary();
			string target = "http://wsulibs.wsu.edu/";
			string status = Metadata.MetadataStatus.Public;

			IDictionary<string, string> map = new Dictionary<string, string>();
			map.Add(Metadata.MetadataKeys.Owner, owner);
			map.Add(Metadata.MetadataKeys.OwnerGroup, ownerGroup);
			map.Add(Metadata.MetadataKeys.CoOwners, string.Join(";", coOwners));
			map.Add(Metadata.MetadataKeys.Created, created.ToString());
			map.Add(Metadata.MetadataKeys.Updated, updated.ToString());
			map.Add(Metadata.MetadataKeys.Target, target);
			map.Add(Metadata.MetadataKeys.Status, status);

			Metadata metadata = new Metadata(map);

			Assert.IsTrue(metadata.Owner == owner);
			Assert.IsTrue(metadata.OwnerGroup == ownerGroup);
			Assert.IsTrue(metadata.CoOwners.Count == coOwners.Length);
			Assert.IsTrue(metadata.CoOwners[0] == coOwners[0]);
			Assert.IsTrue(metadata.CoOwners[1] == coOwners[1]);
			Assert.IsTrue(metadata.Created == created);
			Assert.IsTrue(metadata.Updated == updated);
			Assert.IsTrue(metadata.Target == target);
			Assert.IsTrue(metadata.Status == status);
		}

        public static List<IWriteFile> ReadHeader(string path)
        {
            List<IWriteFile> subfiles = null;
            using (BinaryReader reader = new BinaryReader(File.OpenRead(path)))
            {
                if (!VerifyHeader(path))
                    throw new InvalidDataException("The supplied file is not a PP archive.");

                byte[] versionHeader = reader.ReadBytes(8);
                int version = BitConverter.ToInt32(DecryptHeaderBytes(reader.ReadBytes(4)), 0);

                DecryptHeaderBytes(reader.ReadBytes(1));  // first byte
                int numFiles = BitConverter.ToInt32(DecryptHeaderBytes(reader.ReadBytes(4)), 0);

                byte[] buf = DecryptHeaderBytes(reader.ReadBytes(numFiles * 288));

                subfiles = new List<IWriteFile>(numFiles);
                for (int i = 0; i < numFiles; i++)
                {
                    int offset = i * 288;
                    ppSubfile subfile = new ppSubfile(path);
                    subfile.Name = Utility.EncodingShiftJIS.GetString(buf, offset, 260).TrimEnd(new char[] { '\0' });
                    subfile.size = BitConverter.ToUInt32(buf, offset + 260);
                    subfile.offset = BitConverter.ToUInt32(buf, offset + 264);

                    Metadata metadata = new Metadata();
                    metadata.LastBytes = new byte[20];
                    System.Array.Copy(buf, offset + 268, metadata.LastBytes, 0, 20);
                    subfile.Metadata = metadata;

                    subfiles.Add(subfile);
                }
            }
            return subfiles;
        }

        public void DashStringDoesNotSplitAtNonmatchingDashes()
        {
            // Given
            Engine engine = new Engine();
            Metadata metadata = new Metadata(engine);
            Pipeline pipeline = new Pipeline("Pipeline", engine, null);
            IExecutionContext context = new ExecutionContext(engine, pipeline);
            IDocument[] inputs = { new Document(metadata).Clone(@"FM1
            FM2
            ---
            Content1
            Content2") };
            bool executed = false;
            FrontMatter frontMatter = new FrontMatter("-", new Execute(x =>
            {
                executed = true;
                return new[] { x };
            }));

            // When
            IEnumerable<IDocument> documents = frontMatter.Execute(inputs, context);

            // Then
            Assert.AreEqual(1, documents.Count());
            Assert.IsFalse(executed);
            Assert.AreEqual(@"FM1
            FM2
            ---
            Content1
            Content2", documents.First().Content);
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="UpdateMetadataRequest"/> class
        /// with the given metadata.
        /// </summary>
        /// <param name="metadata">The metadata.</param>
        /// <exception cref="ArgumentNullException">If <paramref name="metadata"/> is <c>null</c>.</exception>
        public UpdateMetadataRequest(Metadata metadata)
        {
            if (metadata == null)
                throw new ArgumentNullException("metadata");

            Metadata = metadata;
        }

 public AmazonMultiUploadStream(AmazonS3Client client, string bucket, string key, Metadata metadata)
 {
     _client = client;
     _bucket = bucket;
     _key = key;
     _metadata = metadata;
 }

        public TextExtractionResult Extract(Func<Metadata, InputStream> streamFactory)
        {
            try
            {
                var parser = new AutoDetectParser();
                var metadata = new Metadata();
                var parseContext = new ParseContext();

                //use the base class type for the key or parts of Tika won't find a usable parser
                parseContext.set(typeof(Parser), parser);

                var content = new System.IO.StringWriter();
                var contentHandlerResult = new TextExtractorContentHandler(content);

                using (var inputStream = streamFactory(metadata))
                {
                    try
                    {
                        parser.parse(inputStream, contentHandlerResult, metadata, parseContext);
                    }
                    finally
                    {
                        inputStream.close();
                    }
                }

                return AssembleExtractionResult(content.ToString(), metadata);
            }
            catch (Exception ex)
            {
                throw new TextExtractionException("Extraction failed.", ex);
            }
        }

 public void UpdatePeersInfoModifiesPool()
 {
     var metadata = new Metadata(new Configuration());
     var cc = NewInstance(metadata);
     cc.Host = TestHelper.CreateHost("127.0.0.1");
     metadata.AddHost(cc.Host.Address);
     var hostAddress2 = IPAddress.Parse("127.0.0.2");
     var hostAddress3 = IPAddress.Parse("127.0.0.3");
     var rows = TestHelper.CreateRows(new List<Dictionary<string, object>>
     {
         new Dictionary<string, object>{{"rpc_address", hostAddress2}, {"peer", null}, { "data_center", "ut-dc2" }, { "rack", "ut-rack2" }, {"tokens", null}},
         new Dictionary<string, object>{{"rpc_address", IPAddress.Parse("0.0.0.0")}, {"peer", hostAddress3}, { "data_center", "ut-dc3" }, { "rack", "ut-rack3" }, {"tokens", null}}
     });
     cc.UpdatePeersInfo(rows);
     Assert.AreEqual(3, metadata.AllHosts().Count);
     //using rpc_address
     var host2 = metadata.GetHost(new IPEndPoint(hostAddress2, ProtocolOptions.DefaultPort));
     Assert.NotNull(host2);
     Assert.AreEqual("ut-dc2", host2.Datacenter);
     Assert.AreEqual("ut-rack2", host2.Rack);
     //with rpc_address = 0.0.0.0, use peer
     var host3 = metadata.GetHost(new IPEndPoint(hostAddress3, ProtocolOptions.DefaultPort));
     Assert.NotNull(host3);
     Assert.AreEqual("ut-dc3", host3.Datacenter);
     Assert.AreEqual("ut-rack3", host3.Rack);
 }

 public static void SetMetadata(this NetInfo prefab, Metadata metadata)
 {
     if (metadata.info != prefab)
     {
         throw new Exception("NoPillars: wrong metadata!");
     }
     prefab.m_canCollide = metadata.collide;
     var r2 = prefab.m_netAI as RoadAI;
     if (r2 != null)
     {
         r2.m_enableZoning = metadata.zoning;
     }
     if (Pillars.networkSkinsEnabled)
     {
         return;
     }
     var ta = prefab.m_netAI as TrainTrackBridgeAI;
     if (ta != null)
     {
         ta.m_bridgePillarInfo = metadata.bpi;
         ta.m_middlePillarInfo = metadata.bmi;
     }
     var ra = prefab.m_netAI as RoadBridgeAI;
     if (ra != null)
     {
         ra.m_bridgePillarInfo = metadata.bpi;
         ra.m_middlePillarInfo = metadata.bmi;
     }
     var pa = prefab.m_netAI as PedestrianBridgeAI;
     if (pa != null)
     {
         pa.m_bridgePillarInfo = metadata.bpi;
     }
 }