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Add initial implementation of Jet-based storage engine
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,140 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Globalization; | ||
| using System.Linq; | ||
| using System.Text; | ||
| using Microsoft.Isam.Esent.Collections.Generic; | ||
|
|
||
| namespace ReactiveXaml.Serialization.Esent | ||
| { | ||
| public class EsentPersistedMetadata | ||
| { | ||
| public Dictionary<string, Guid> SyncPointIndex { get; set; } | ||
| public Dictionary<Guid, string> ItemTypeNames { get; set; } | ||
| } | ||
|
|
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| public class EsentStorageEngine : IExtendedStorageEngine | ||
| { | ||
| PersistentDictionary<Guid, byte[]> _backingStore; | ||
| Dictionary<Guid, string> _itemTypeNames; | ||
| Dictionary<string, Guid> _syncPointIndex; | ||
|
|
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| static readonly Lazy<IEnumerable<Type>> allStorageTypes = new Lazy<IEnumerable<Type>>( | ||
| () => Utility.GetAllTypesImplementingInterface(typeof(ISerializableItem)).ToArray()); | ||
|
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| Func<object, DataContractSerializationProvider> serializerFactory; | ||
|
|
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| public EsentStorageEngine(string databasePath) | ||
| { | ||
| _backingStore = new PersistentDictionary<Guid, byte[]>(databasePath); | ||
| } | ||
|
|
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| public T Load<T>(Guid contentHash) where T : ISerializableItem { | ||
| return (T)Load(contentHash); | ||
| } | ||
|
|
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| public object Load(Guid contentHash) | ||
| { | ||
| byte[] data; | ||
|
|
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| if (!_backingStore.TryGetValue(contentHash, out data)) { | ||
| this.Log().ErrorFormat("Failed to load object: {0}", contentHash); | ||
| return null; | ||
| } | ||
|
|
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| this.Log().DebugFormat("Loaded {0}", contentHash); | ||
| return serializerFactory(contentHash).Deserialize(data, Type.GetType(_itemTypeNames[contentHash])); | ||
| } | ||
|
|
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| public void Save<T>(T obj) where T : ISerializableItem | ||
| { | ||
| this.Log().DebugFormat("Saving {0}: {1}", obj, obj.ContentHash); | ||
| _itemTypeNames[obj.ContentHash] = obj.GetType().FullName; | ||
| _backingStore[obj.ContentHash] = serializerFactory(obj).Serialize(obj); | ||
| } | ||
|
|
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| public void FlushChanges() | ||
| { | ||
| persistMetadata(); | ||
| _backingStore.Flush(); | ||
| } | ||
|
|
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| public ISyncPointInformation CreateSyncPoint<T>(T obj, string qualifier = null, DateTimeOffset? createdOn = null) | ||
| where T : ISerializableItem | ||
| { | ||
| Save(obj); | ||
|
|
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| var key = getKeyFromQualifiedType(typeof (T), qualifier ?? String.Empty); | ||
| var parent = (_syncPointIndex.ContainsKey(key) ? _syncPointIndex[key] : Guid.Empty); | ||
| var ret = new SyncPointInformation(obj.ContentHash, parent, typeof (T), qualifier ?? String.Empty, createdOn ?? DateTimeOffset.Now); | ||
| Save(ret); | ||
| _syncPointIndex[key] = ret.ContentHash; | ||
|
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| this.Log().InfoFormat("Created sync point: {0}.{1}", obj.ContentHash, qualifier); | ||
|
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| FlushChanges(); | ||
| return ret; | ||
| } | ||
|
|
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| public Guid[] GetOrderedRevisionList(Type type, string qualifier = null) | ||
| { | ||
| var ret = new List<Guid>(); | ||
| var key = getKeyFromQualifiedType(type, qualifier ?? String.Empty); | ||
|
|
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| if (!_syncPointIndex.ContainsKey(key)) { | ||
| return null; | ||
| } | ||
|
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| var current = _syncPointIndex[key]; | ||
| while(current != Guid.Empty) { | ||
| ret.Add(current); | ||
|
|
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| var syncPoint = Load<ISyncPointInformation>(current); | ||
| current = syncPoint.ParentSyncPoint; | ||
| } | ||
|
|
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| return ret.ToArray(); | ||
| } | ||
|
|
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| public void Dispose() { | ||
| FlushChanges(); | ||
| _backingStore.Dispose(); | ||
| } | ||
|
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| public T GetLatestRootObject<T>(string qualifier = null, DateTimeOffset? olderThan = null) where T : ISerializableItem { | ||
| throw new NotImplementedException(); | ||
| } | ||
|
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| public T[] GetRootObjectsInDateRange<T>(string qualifier = null, DateTimeOffset? olderThan = null, DateTimeOffset? newerThan = null) where T : ISerializableItem { | ||
| throw new NotImplementedException(); | ||
| } | ||
|
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| static string getKeyFromQualifiedType(Type type, string qualifier) | ||
| { | ||
| return String.Format(CultureInfo.InvariantCulture, "{0}_{1}", type.FullName, qualifier); | ||
| } | ||
|
|
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| void loadOrInitializeMetadata() | ||
| { | ||
| byte[] data; | ||
|
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| if (!_backingStore.TryGetValue(Guid.Empty, out data)) { | ||
| if (_backingStore.Count != 0) { | ||
| this.Log().Fatal("Database has been corrupted!"); | ||
| throw new Exception("Database is in an inconsistent state"); | ||
| } | ||
|
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| this.Log().Warn("Could not load metadata, initializing blank"); | ||
| _itemTypeNames = new Dictionary<Guid, string>(); | ||
| _syncPointIndex = new Dictionary<string, Guid>(); | ||
|
|
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| persistMetadata(); | ||
| } | ||
| } | ||
|
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| void persistMetadata() { | ||
| var metadata = new EsentPersistedMetadata() { ItemTypeNames = _itemTypeNames, SyncPointIndex = null }; | ||
| _backingStore[Guid.Empty] = serializerFactory(metadata).Serialize(metadata); | ||
| } | ||
| } | ||
| } |
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36
ReactiveXaml.Serialization.Esent/Properties/AssemblyInfo.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| using System.Reflection; | ||
| using System.Runtime.CompilerServices; | ||
| using System.Runtime.InteropServices; | ||
|
|
||
| // General Information about an assembly is controlled through the following | ||
| // set of attributes. Change these attribute values to modify the information | ||
| // associated with an assembly. | ||
| [assembly: AssemblyTitle("ReactiveXaml.Serialization.Esent")] | ||
| [assembly: AssemblyDescription("")] | ||
| [assembly: AssemblyConfiguration("")] | ||
| [assembly: AssemblyCompany("Microsoft")] | ||
| [assembly: AssemblyProduct("ReactiveXaml.Serialization.Esent")] | ||
| [assembly: AssemblyCopyright("Copyright © Microsoft 2010")] | ||
| [assembly: AssemblyTrademark("")] | ||
| [assembly: AssemblyCulture("")] | ||
|
|
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| // Setting ComVisible to false makes the types in this assembly not visible | ||
| // to COM components. If you need to access a type in this assembly from | ||
| // COM, set the ComVisible attribute to true on that type. | ||
| [assembly: ComVisible(false)] | ||
|
|
||
| // The following GUID is for the ID of the typelib if this project is exposed to COM | ||
| [assembly: Guid("0fa075f3-b680-4793-b29b-cde3bfb59c9b")] | ||
|
|
||
| // Version information for an assembly consists of the following four values: | ||
| // | ||
| // Major Version | ||
| // Minor Version | ||
| // Build Number | ||
| // Revision | ||
| // | ||
| // You can specify all the values or you can default the Build and Revision Numbers | ||
| // by using the '*' as shown below: | ||
| // [assembly: AssemblyVersion("1.0.*")] | ||
| [assembly: AssemblyVersion("1.0.0.0")] | ||
| [assembly: AssemblyFileVersion("1.0.0.0")] |
73 changes: 73 additions & 0 deletions
73
ReactiveXaml.Serialization.Esent/ReactiveXaml.Serialization.Esent.csproj
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| <?xml version="1.0" encoding="utf-8"?> | ||
| <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> | ||
| <PropertyGroup> | ||
| <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration> | ||
| <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform> | ||
| <ProductVersion>8.0.30703</ProductVersion> | ||
| <SchemaVersion>2.0</SchemaVersion> | ||
| <ProjectGuid>{0B0ABDC8-4EF3-4172-ADE4-E4FB55E5F91E}</ProjectGuid> | ||
| <OutputType>Library</OutputType> | ||
| <AppDesignerFolder>Properties</AppDesignerFolder> | ||
| <RootNamespace>ReactiveXaml.Serialization.Esent</RootNamespace> | ||
| <AssemblyName>ReactiveXaml.Serialization.Esent</AssemblyName> | ||
| <TargetFrameworkVersion>v4.0</TargetFrameworkVersion> | ||
| <FileAlignment>512</FileAlignment> | ||
| </PropertyGroup> | ||
| <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' "> | ||
| <DebugSymbols>true</DebugSymbols> | ||
| <DebugType>full</DebugType> | ||
| <Optimize>false</Optimize> | ||
| <OutputPath>bin\Debug\</OutputPath> | ||
| <DefineConstants>DEBUG;TRACE</DefineConstants> | ||
| <ErrorReport>prompt</ErrorReport> | ||
| <WarningLevel>4</WarningLevel> | ||
| </PropertyGroup> | ||
| <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> | ||
| <DebugType>pdbonly</DebugType> | ||
| <Optimize>true</Optimize> | ||
| <OutputPath>bin\Release\</OutputPath> | ||
| <DefineConstants>TRACE</DefineConstants> | ||
| <ErrorReport>prompt</ErrorReport> | ||
| <WarningLevel>4</WarningLevel> | ||
| </PropertyGroup> | ||
| <ItemGroup> | ||
| <Reference Include="Esent.Collections"> | ||
| <HintPath>..\ext\Esent.Collections.dll</HintPath> | ||
| </Reference> | ||
| <Reference Include="Esent.Interop"> | ||
| <HintPath>..\ext\Esent.Interop.dll</HintPath> | ||
| </Reference> | ||
| <Reference Include="System" /> | ||
| <Reference Include="System.Core" /> | ||
| <Reference Include="System.Xml.Linq" /> | ||
| <Reference Include="System.Data.DataSetExtensions" /> | ||
| <Reference Include="Microsoft.CSharp" /> | ||
| <Reference Include="System.Data" /> | ||
| <Reference Include="System.Xml" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <Compile Include="EsentStorageEngine.cs" /> | ||
| <Compile Include="Properties\AssemblyInfo.cs" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <ProjectReference Include="..\ReactiveXaml.Serialization\ReactiveXaml.Serialization.csproj"> | ||
| <Project>{C6A9A8EC-FDA6-45C1-9694-298D44E3C55F}</Project> | ||
| <Name>ReactiveXaml.Serialization</Name> | ||
| </ProjectReference> | ||
| <ProjectReference Include="..\ReactiveXaml\ReactiveXaml.csproj"> | ||
| <Project>{292A477B-BB94-43C1-984E-E177EF9FEDB7}</Project> | ||
| <Name>ReactiveXaml</Name> | ||
| </ProjectReference> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <WCFMetadata Include="Service References\" /> | ||
| </ItemGroup> | ||
| <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" /> | ||
| <!-- To modify your build process, add your task inside one of the targets below and uncomment it. | ||
| Other similar extension points exist, see Microsoft.Common.targets. | ||
| <Target Name="BeforeBuild"> | ||
| </Target> | ||
| <Target Name="AfterBuild"> | ||
| </Target> | ||
| --> | ||
| </Project> |
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