Luke Pulverenti
11 years ago
parent
95f471e8c3
commit
e677a57bf1
@ -0,0 +1,235 @@
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.IO;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Serialization;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Server.Implementations.Persistence
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{
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public class JsonItemRepository : IItemRepository
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{
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private readonly ConcurrentDictionary<string, SemaphoreSlim> _fileLocks = new ConcurrentDictionary<string, SemaphoreSlim>();
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private SemaphoreSlim GetLock(string filename)
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{
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return _fileLocks.GetOrAdd(filename, key => new SemaphoreSlim(1, 1));
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}
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/// <summary>
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/// Gets the name of the repository
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/// </summary>
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/// <value>The name.</value>
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public string Name
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{
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get
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{
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return "Json";
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}
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}
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/// <summary>
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/// Gets the json serializer.
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/// </summary>
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/// <value>The json serializer.</value>
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private readonly IJsonSerializer _jsonSerializer;
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private readonly string _criticReviewsPath;
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private readonly FileSystemRepository _itemRepo;
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/// <summary>
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/// Initializes a new instance of the <see cref="JsonUserDataRepository" /> class.
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/// </summary>
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/// <param name="appPaths">The app paths.</param>
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/// <param name="jsonSerializer">The json serializer.</param>
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/// <param name="logManager">The log manager.</param>
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/// <exception cref="System.ArgumentNullException">appPaths</exception>
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public JsonItemRepository(IApplicationPaths appPaths, IJsonSerializer jsonSerializer, ILogManager logManager)
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{
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if (appPaths == null)
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{
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throw new ArgumentNullException("appPaths");
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}
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if (jsonSerializer == null)
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{
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throw new ArgumentNullException("jsonSerializer");
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}
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_jsonSerializer = jsonSerializer;
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_criticReviewsPath = Path.Combine(appPaths.DataPath, "critic-reviews");
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_itemRepo = new FileSystemRepository(Path.Combine(appPaths.DataPath, "library"));
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}
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/// <summary>
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/// Opens the connection to the database
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/// </summary>
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/// <returns>Task.</returns>
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public Task Initialize()
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{
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return Task.FromResult(true);
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}
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/// <summary>
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/// Save a standard item in the repo
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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/// <exception cref="System.ArgumentNullException">item</exception>
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public async Task SaveItem(BaseItem item, CancellationToken cancellationToken)
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{
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if (item == null)
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{
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throw new ArgumentNullException("item");
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}
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if (!Directory.Exists(_criticReviewsPath))
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{
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Directory.CreateDirectory(_criticReviewsPath);
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}
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var path = _itemRepo.GetResourcePath(item.Id + ".json");
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var parentPath = Path.GetDirectoryName(path);
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if (!Directory.Exists(parentPath))
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{
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Directory.CreateDirectory(parentPath);
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}
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var semaphore = GetLock(path);
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await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
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try
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{
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_jsonSerializer.SerializeToFile(item, path);
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}
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finally
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{
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semaphore.Release();
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}
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}
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/// <summary>
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/// Saves the items.
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/// </summary>
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/// <param name="items">The items.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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/// <exception cref="System.ArgumentNullException">
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/// items
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/// or
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/// cancellationToken
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/// </exception>
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public Task SaveItems(IEnumerable<BaseItem> items, CancellationToken cancellationToken)
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{
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if (items == null)
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{
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throw new ArgumentNullException("items");
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}
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if (cancellationToken == null)
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{
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throw new ArgumentNullException("cancellationToken");
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}
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var tasks = items.Select(i => SaveItem(i, cancellationToken));
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return Task.WhenAll(tasks);
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}
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/// <summary>
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/// Retrieves the item.
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/// </summary>
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/// <param name="id">The id.</param>
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/// <param name="type">The type.</param>
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/// <returns>BaseItem.</returns>
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/// <exception cref="System.ArgumentNullException">id</exception>
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public BaseItem RetrieveItem(Guid id, Type type)
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{
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if (id == Guid.Empty)
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{
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throw new ArgumentNullException("id");
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}
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var path = _itemRepo.GetResourcePath(id + ".json");
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try
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{
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return (BaseItem)_jsonSerializer.DeserializeFromFile(type, path);
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}
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catch (IOException)
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{
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// File doesn't exist or is currently bring written to
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return null;
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}
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}
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/// <summary>
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/// Gets the critic reviews.
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/// </summary>
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/// <param name="itemId">The item id.</param>
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/// <returns>Task{IEnumerable{ItemReview}}.</returns>
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public Task<IEnumerable<ItemReview>> GetCriticReviews(Guid itemId)
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{
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return Task.Run<IEnumerable<ItemReview>>(() =>
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{
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var path = Path.Combine(_criticReviewsPath, itemId + ".json");
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try
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{
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return _jsonSerializer.DeserializeFromFile<List<ItemReview>>(path);
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}
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catch (IOException)
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{
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// File doesn't exist or is currently bring written to
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return new List<ItemReview>();
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}
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});
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}
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/// <summary>
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/// Saves the critic reviews.
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/// </summary>
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/// <param name="itemId">The item id.</param>
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/// <param name="criticReviews">The critic reviews.</param>
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/// <returns>Task.</returns>
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public Task SaveCriticReviews(Guid itemId, IEnumerable<ItemReview> criticReviews)
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{
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return Task.Run(() =>
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{
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if (!Directory.Exists(_criticReviewsPath))
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{
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Directory.CreateDirectory(_criticReviewsPath);
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}
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var path = Path.Combine(_criticReviewsPath, itemId + ".json");
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_jsonSerializer.SerializeToFile(criticReviews.ToList(), path);
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});
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}
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public void Dispose()
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{
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// Wait up to two seconds for any existing writes to finish
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var locks = _fileLocks.Values.ToList()
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.Where(i => i.CurrentCount == 1)
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.Select(i => i.WaitAsync(2000));
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var task = Task.WhenAll(locks);
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Task.WaitAll(task);
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}
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}
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}
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@ -1,524 +0,0 @@
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Serialization;
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using MediaBrowser.Server.Implementations.Reflection;
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Data.SQLite;
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using System.IO;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Server.Implementations.Sqlite
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{
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/// <summary>
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/// Class SQLiteItemRepository
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/// </summary>
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public class SQLiteItemRepository : SqliteRepository, IItemRepository
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{
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/// <summary>
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/// The _type mapper
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/// </summary>
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private readonly TypeMapper _typeMapper = new TypeMapper();
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/// <summary>
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/// The repository name
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/// </summary>
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public const string RepositoryName = "SQLite";
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/// <summary>
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/// Gets the name of the repository
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/// </summary>
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/// <value>The name.</value>
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public string Name
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{
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get
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{
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return RepositoryName;
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}
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}
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/// <summary>
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/// Gets the json serializer.
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/// </summary>
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/// <value>The json serializer.</value>
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private readonly IJsonSerializer _jsonSerializer;
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/// <summary>
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/// The _app paths
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/// </summary>
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private readonly IApplicationPaths _appPaths;
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/// <summary>
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/// The _save item command
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/// </summary>
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private SQLiteCommand _saveItemCommand;
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/// <summary>
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/// The _delete children command
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/// </summary>
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private SQLiteCommand _deleteChildrenCommand;
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/// <summary>
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/// The _save children command
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/// </summary>
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private SQLiteCommand _saveChildrenCommand;
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private string _criticReviewsPath;
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/// <summary>
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/// Initializes a new instance of the <see cref="SQLiteUserDataRepository" /> class.
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/// </summary>
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/// <param name="appPaths">The app paths.</param>
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/// <param name="jsonSerializer">The json serializer.</param>
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/// <param name="logManager">The log manager.</param>
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/// <exception cref="System.ArgumentNullException">appPaths</exception>
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public SQLiteItemRepository(IApplicationPaths appPaths, IJsonSerializer jsonSerializer, ILogManager logManager)
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: base(logManager)
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{
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if (appPaths == null)
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{
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throw new ArgumentNullException("appPaths");
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}
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if (jsonSerializer == null)
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{
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throw new ArgumentNullException("jsonSerializer");
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}
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_appPaths = appPaths;
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_jsonSerializer = jsonSerializer;
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_criticReviewsPath = Path.Combine(_appPaths.DataPath, "critic-reviews");
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}
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/// <summary>
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/// Opens the connection to the database
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/// </summary>
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/// <returns>Task.</returns>
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public async Task Initialize()
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{
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var dbFile = Path.Combine(_appPaths.DataPath, "library.db");
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await ConnectToDb(dbFile).ConfigureAwait(false);
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string[] queries = {
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"create table if not exists items (guid GUID primary key, obj_type, data BLOB)",
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"create index if not exists idx_items on items(guid)",
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"create table if not exists children (guid GUID, child GUID)",
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"create unique index if not exists idx_children on children(guid, child)",
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"create table if not exists schema_version (table_name primary key, version)",
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//triggers
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TriggerSql,
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//pragmas
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"pragma temp_store = memory"
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};
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RunQueries(queries);
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PrepareStatements();
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}
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//cascade delete triggers
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/// <summary>
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/// The trigger SQL
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/// </summary>
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protected string TriggerSql =
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@"CREATE TRIGGER if not exists delete_item
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AFTER DELETE
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ON items
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FOR EACH ROW
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BEGIN
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DELETE FROM children WHERE children.guid = old.child;
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DELETE FROM children WHERE children.child = old.child;
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END";
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/// <summary>
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/// The _write lock
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/// </summary>
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private readonly SemaphoreSlim _writeLock = new SemaphoreSlim(1, 1);
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/// <summary>
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/// Prepares the statements.
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/// </summary>
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private void PrepareStatements()
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{
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_saveItemCommand = new SQLiteCommand
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{
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CommandText = "replace into items (guid, obj_type, data) values (@1, @2, @3)"
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};
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_saveItemCommand.Parameters.Add(new SQLiteParameter("@1"));
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_saveItemCommand.Parameters.Add(new SQLiteParameter("@2"));
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_saveItemCommand.Parameters.Add(new SQLiteParameter("@3"));
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_deleteChildrenCommand = new SQLiteCommand
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{
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CommandText = "delete from children where guid = @guid"
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};
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_deleteChildrenCommand.Parameters.Add(new SQLiteParameter("@guid"));
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_saveChildrenCommand = new SQLiteCommand
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{
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CommandText = "replace into children (guid, child) values (@guid, @child)"
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};
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_saveChildrenCommand.Parameters.Add(new SQLiteParameter("@guid"));
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_saveChildrenCommand.Parameters.Add(new SQLiteParameter("@child"));
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}
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/// <summary>
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/// Save a standard item in the repo
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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/// <exception cref="System.ArgumentNullException">item</exception>
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public Task SaveItem(BaseItem item, CancellationToken cancellationToken)
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{
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if (item == null)
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{
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throw new ArgumentNullException("item");
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}
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return SaveItems(new[] { item }, cancellationToken);
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}
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/// <summary>
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/// Saves the items.
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/// </summary>
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/// <param name="items">The items.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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/// <exception cref="System.ArgumentNullException">
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/// items
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/// or
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/// cancellationToken
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/// </exception>
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public async Task SaveItems(IEnumerable<BaseItem> items, CancellationToken cancellationToken)
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{
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if (items == null)
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{
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throw new ArgumentNullException("items");
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}
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if (cancellationToken == null)
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{
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throw new ArgumentNullException("cancellationToken");
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}
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cancellationToken.ThrowIfCancellationRequested();
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await _writeLock.WaitAsync(cancellationToken).ConfigureAwait(false);
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SQLiteTransaction transaction = null;
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try
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{
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transaction = Connection.BeginTransaction();
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foreach (var item in items)
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{
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cancellationToken.ThrowIfCancellationRequested();
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_saveItemCommand.Parameters[0].Value = item.Id;
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_saveItemCommand.Parameters[1].Value = item.GetType().FullName;
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_saveItemCommand.Parameters[2].Value = _jsonSerializer.SerializeToBytes(item);
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_saveItemCommand.Transaction = transaction;
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await _saveItemCommand.ExecuteNonQueryAsync(cancellationToken);
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}
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transaction.Commit();
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}
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catch (OperationCanceledException)
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{
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if (transaction != null)
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{
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transaction.Rollback();
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}
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throw;
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}
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catch (Exception e)
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{
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Logger.ErrorException("Failed to save items:", e);
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if (transaction != null)
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{
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transaction.Rollback();
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}
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throw;
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}
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finally
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{
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if (transaction != null)
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{
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transaction.Dispose();
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}
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_writeLock.Release();
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}
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}
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/// <summary>
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/// Retrieve a standard item from the repo
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/// </summary>
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/// <param name="id">The id.</param>
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/// <returns>BaseItem.</returns>
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/// <exception cref="System.ArgumentNullException">id</exception>
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/// <exception cref="System.ArgumentException"></exception>
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public BaseItem GetItem(Guid id)
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{
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if (id == Guid.Empty)
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{
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throw new ArgumentNullException("id");
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}
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return RetrieveItemInternal(id);
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}
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/// <summary>
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/// Retrieves the items.
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/// </summary>
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||||
/// <param name="ids">The ids.</param>
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/// <returns>IEnumerable{BaseItem}.</returns>
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/// <exception cref="System.ArgumentNullException">ids</exception>
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public IEnumerable<BaseItem> GetItems(IEnumerable<Guid> ids)
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{
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if (ids == null)
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||||
{
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throw new ArgumentNullException("ids");
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}
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||||
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return ids.Select(RetrieveItemInternal);
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}
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/// <summary>
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/// Internal retrieve from items or users table
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/// </summary>
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/// <param name="id">The id.</param>
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||||
/// <returns>BaseItem.</returns>
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/// <exception cref="System.ArgumentNullException">id</exception>
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||||
/// <exception cref="System.ArgumentException"></exception>
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||||
protected BaseItem RetrieveItemInternal(Guid id)
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{
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if (id == Guid.Empty)
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||||
{
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throw new ArgumentNullException("id");
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}
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using (var cmd = Connection.CreateCommand())
|
||||
{
|
||||
cmd.CommandText = "select obj_type,data from items where guid = @guid";
|
||||
var guidParam = cmd.Parameters.Add("@guid", DbType.Guid);
|
||||
guidParam.Value = id;
|
||||
|
||||
using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow))
|
||||
{
|
||||
if (reader.Read())
|
||||
{
|
||||
var type = reader.GetString(0);
|
||||
using (var stream = GetStream(reader, 1))
|
||||
{
|
||||
var itemType = _typeMapper.GetType(type);
|
||||
|
||||
if (itemType == null)
|
||||
{
|
||||
Logger.Error("Cannot find type {0}. Probably belongs to plug-in that is no longer loaded.", type);
|
||||
return null;
|
||||
}
|
||||
|
||||
var item = _jsonSerializer.DeserializeFromStream(stream, itemType);
|
||||
return item as BaseItem;
|
||||
}
|
||||
}
|
||||
}
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Retrieve all the children of the given folder
|
||||
/// </summary>
|
||||
/// <param name="parent">The parent.</param>
|
||||
/// <returns>IEnumerable{BaseItem}.</returns>
|
||||
/// <exception cref="System.ArgumentNullException"></exception>
|
||||
public IEnumerable<BaseItem> RetrieveChildren(Folder parent)
|
||||
{
|
||||
if (parent == null)
|
||||
{
|
||||
throw new ArgumentNullException();
|
||||
}
|
||||
|
||||
using (var cmd = Connection.CreateCommand())
|
||||
{
|
||||
cmd.CommandText = "select obj_type,data from items where guid in (select child from children where guid = @guid)";
|
||||
var guidParam = cmd.Parameters.Add("@guid", DbType.Guid);
|
||||
guidParam.Value = parent.Id;
|
||||
|
||||
using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult))
|
||||
{
|
||||
while (reader.Read())
|
||||
{
|
||||
var type = reader.GetString(0);
|
||||
|
||||
using (var stream = GetStream(reader, 1))
|
||||
{
|
||||
var itemType = _typeMapper.GetType(type);
|
||||
if (itemType == null)
|
||||
{
|
||||
Logger.Error("Cannot find type {0}. Probably belongs to plug-in that is no longer loaded.", type);
|
||||
continue;
|
||||
}
|
||||
var item = _jsonSerializer.DeserializeFromStream(stream, itemType) as BaseItem;
|
||||
if (item != null)
|
||||
{
|
||||
item.Parent = parent;
|
||||
yield return item;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Save references to all the children for the given folder
|
||||
/// (Doesn't actually save the child entities)
|
||||
/// </summary>
|
||||
/// <param name="id">The id.</param>
|
||||
/// <param name="children">The children.</param>
|
||||
/// <param name="cancellationToken">The cancellation token.</param>
|
||||
/// <returns>Task.</returns>
|
||||
/// <exception cref="System.ArgumentNullException">id</exception>
|
||||
public async Task SaveChildren(Guid id, IEnumerable<BaseItem> children, CancellationToken cancellationToken)
|
||||
{
|
||||
if (id == Guid.Empty)
|
||||
{
|
||||
throw new ArgumentNullException("id");
|
||||
}
|
||||
|
||||
if (children == null)
|
||||
{
|
||||
throw new ArgumentNullException("children");
|
||||
}
|
||||
|
||||
if (cancellationToken == null)
|
||||
{
|
||||
throw new ArgumentNullException("cancellationToken");
|
||||
}
|
||||
|
||||
cancellationToken.ThrowIfCancellationRequested();
|
||||
|
||||
await _writeLock.WaitAsync(cancellationToken).ConfigureAwait(false);
|
||||
|
||||
SQLiteTransaction transaction = null;
|
||||
|
||||
try
|
||||
{
|
||||
transaction = Connection.BeginTransaction();
|
||||
|
||||
// Delete exising children
|
||||
_deleteChildrenCommand.Parameters[0].Value = id;
|
||||
_deleteChildrenCommand.Transaction = transaction;
|
||||
await _deleteChildrenCommand.ExecuteNonQueryAsync(cancellationToken);
|
||||
|
||||
// Save new children
|
||||
foreach (var child in children)
|
||||
{
|
||||
_saveChildrenCommand.Transaction = transaction;
|
||||
|
||||
_saveChildrenCommand.Parameters[0].Value = id;
|
||||
_saveChildrenCommand.Parameters[1].Value = child.Id;
|
||||
|
||||
await _saveChildrenCommand.ExecuteNonQueryAsync(cancellationToken);
|
||||
}
|
||||
|
||||
transaction.Commit();
|
||||
}
|
||||
catch (OperationCanceledException)
|
||||
{
|
||||
if (transaction != null)
|
||||
{
|
||||
transaction.Rollback();
|
||||
}
|
||||
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
Logger.ErrorException("Failed to save children:", e);
|
||||
|
||||
if (transaction != null)
|
||||
{
|
||||
transaction.Rollback();
|
||||
}
|
||||
|
||||
throw;
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (transaction != null)
|
||||
{
|
||||
transaction.Dispose();
|
||||
}
|
||||
|
||||
_writeLock.Release();
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the critic reviews.
|
||||
/// </summary>
|
||||
/// <param name="itemId">The item id.</param>
|
||||
/// <returns>Task{IEnumerable{ItemReview}}.</returns>
|
||||
public Task<IEnumerable<ItemReview>> GetCriticReviews(Guid itemId)
|
||||
{
|
||||
return Task.Run<IEnumerable<ItemReview>>(() =>
|
||||
{
|
||||
|
||||
try
|
||||
{
|
||||
var path = Path.Combine(_criticReviewsPath, itemId + ".json");
|
||||
|
||||
return _jsonSerializer.DeserializeFromFile<List<ItemReview>>(path);
|
||||
}
|
||||
catch (DirectoryNotFoundException)
|
||||
{
|
||||
return new List<ItemReview>();
|
||||
}
|
||||
catch (FileNotFoundException)
|
||||
{
|
||||
return new List<ItemReview>();
|
||||
}
|
||||
|
||||
});
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Saves the critic reviews.
|
||||
/// </summary>
|
||||
/// <param name="itemId">The item id.</param>
|
||||
/// <param name="criticReviews">The critic reviews.</param>
|
||||
/// <returns>Task.</returns>
|
||||
public Task SaveCriticReviews(Guid itemId, IEnumerable<ItemReview> criticReviews)
|
||||
{
|
||||
return Task.Run(() =>
|
||||
{
|
||||
if (!Directory.Exists(_criticReviewsPath))
|
||||
{
|
||||
Directory.CreateDirectory(_criticReviewsPath);
|
||||
}
|
||||
|
||||
var path = Path.Combine(_criticReviewsPath, itemId + ".json");
|
||||
|
||||
_jsonSerializer.SerializeToFile(criticReviews.ToList(), path);
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1,183 +0,0 @@
|
||||
using MediaBrowser.Model.Logging;
|
||||
using System;
|
||||
using System.Data;
|
||||
using System.Data.Common;
|
||||
using System.Data.SQLite;
|
||||
using System.IO;
|
||||
using System.Threading.Tasks;
|
||||
|
||||
namespace MediaBrowser.Server.Implementations.Sqlite
|
||||
{
|
||||
/// <summary>
|
||||
/// Class SqliteRepository
|
||||
/// </summary>
|
||||
public abstract class SqliteRepository : IDisposable
|
||||
{
|
||||
/// <summary>
|
||||
/// The db file name
|
||||
/// </summary>
|
||||
protected string DbFileName;
|
||||
/// <summary>
|
||||
/// The connection
|
||||
/// </summary>
|
||||
protected SQLiteConnection Connection;
|
||||
|
||||
/// <summary>
|
||||
/// Gets the logger.
|
||||
/// </summary>
|
||||
/// <value>The logger.</value>
|
||||
protected ILogger Logger { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the <see cref="SqliteRepository" /> class.
|
||||
/// </summary>
|
||||
/// <param name="logManager">The log manager.</param>
|
||||
/// <exception cref="System.ArgumentNullException">logger</exception>
|
||||
protected SqliteRepository(ILogManager logManager)
|
||||
{
|
||||
if (logManager == null)
|
||||
{
|
||||
throw new ArgumentNullException("logManager");
|
||||
}
|
||||
|
||||
Logger = logManager.GetLogger(GetType().Name);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Connects to DB.
|
||||
/// </summary>
|
||||
/// <param name="dbPath">The db path.</param>
|
||||
/// <returns>Task{System.Boolean}.</returns>
|
||||
/// <exception cref="System.ArgumentNullException">dbPath</exception>
|
||||
protected Task ConnectToDb(string dbPath)
|
||||
{
|
||||
if (string.IsNullOrEmpty(dbPath))
|
||||
{
|
||||
throw new ArgumentNullException("dbPath");
|
||||
}
|
||||
|
||||
DbFileName = dbPath;
|
||||
var connectionstr = new SQLiteConnectionStringBuilder
|
||||
{
|
||||
PageSize = 4096,
|
||||
CacheSize = 40960,
|
||||
SyncMode = SynchronizationModes.Off,
|
||||
DataSource = dbPath,
|
||||
JournalMode = SQLiteJournalModeEnum.Wal
|
||||
};
|
||||
|
||||
Connection = new SQLiteConnection(connectionstr.ConnectionString);
|
||||
|
||||
return Connection.OpenAsync();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Runs the queries.
|
||||
/// </summary>
|
||||
/// <param name="queries">The queries.</param>
|
||||
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
|
||||
/// <exception cref="System.ArgumentNullException">queries</exception>
|
||||
protected void RunQueries(string[] queries)
|
||||
{
|
||||
if (queries == null)
|
||||
{
|
||||
throw new ArgumentNullException("queries");
|
||||
}
|
||||
|
||||
using (var tran = Connection.BeginTransaction())
|
||||
{
|
||||
try
|
||||
{
|
||||
using (var cmd = Connection.CreateCommand())
|
||||
{
|
||||
foreach (var query in queries)
|
||||
{
|
||||
cmd.Transaction = tran;
|
||||
cmd.CommandText = query;
|
||||
cmd.ExecuteNonQuery();
|
||||
}
|
||||
}
|
||||
|
||||
tran.Commit();
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
Logger.ErrorException("Error running queries", e);
|
||||
tran.Rollback();
|
||||
throw;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
|
||||
/// </summary>
|
||||
public void Dispose()
|
||||
{
|
||||
Dispose(true);
|
||||
GC.SuppressFinalize(this);
|
||||
}
|
||||
|
||||
private readonly object _disposeLock = new object();
|
||||
|
||||
/// <summary>
|
||||
/// Releases unmanaged and - optionally - managed resources.
|
||||
/// </summary>
|
||||
/// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
|
||||
protected virtual void Dispose(bool dispose)
|
||||
{
|
||||
if (dispose)
|
||||
{
|
||||
try
|
||||
{
|
||||
lock (_disposeLock)
|
||||
{
|
||||
if (Connection != null)
|
||||
{
|
||||
if (Connection.IsOpen())
|
||||
{
|
||||
Connection.Close();
|
||||
}
|
||||
|
||||
Connection.Dispose();
|
||||
Connection = null;
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
Logger.ErrorException("Error disposing database", ex);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets a stream from a DataReader at a given ordinal
|
||||
/// </summary>
|
||||
/// <param name="reader">The reader.</param>
|
||||
/// <param name="ordinal">The ordinal.</param>
|
||||
/// <returns>Stream.</returns>
|
||||
/// <exception cref="System.ArgumentNullException">reader</exception>
|
||||
protected static Stream GetStream(IDataReader reader, int ordinal)
|
||||
{
|
||||
if (reader == null)
|
||||
{
|
||||
throw new ArgumentNullException("reader");
|
||||
}
|
||||
|
||||
var memoryStream = new MemoryStream();
|
||||
var num = 0L;
|
||||
var array = new byte[4096];
|
||||
long bytes;
|
||||
do
|
||||
{
|
||||
bytes = reader.GetBytes(ordinal, num, array, 0, array.Length);
|
||||
memoryStream.Write(array, 0, (int)bytes);
|
||||
num += bytes;
|
||||
}
|
||||
while (bytes > 0L);
|
||||
memoryStream.Position = 0;
|
||||
return memoryStream;
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in new issue