472 lines
16 KiB
C#
472 lines
16 KiB
C#
using MediaBrowser.Controller;
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using MediaBrowser.Controller.Sync;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Querying;
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using MediaBrowser.Model.Sync;
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using MediaBrowser.Server.Implementations.Persistence;
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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.Globalization;
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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.Sync
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{
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public class SyncRepository : ISyncRepository, IDisposable
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{
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private IDbConnection _connection;
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private readonly ILogger _logger;
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private readonly SemaphoreSlim _writeLock = new SemaphoreSlim(1, 1);
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private readonly IServerApplicationPaths _appPaths;
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private readonly CultureInfo _usCulture = new CultureInfo("en-US");
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private IDbCommand _saveJobCommand;
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private IDbCommand _saveJobItemCommand;
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public SyncRepository(ILogger logger, IServerApplicationPaths appPaths)
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{
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_logger = logger;
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_appPaths = appPaths;
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}
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public async Task Initialize()
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{
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var dbFile = Path.Combine(_appPaths.DataPath, "sync.db");
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_connection = await SqliteExtensions.ConnectToDb(dbFile, _logger).ConfigureAwait(false);
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string[] queries = {
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"create table if not exists SyncJobs (Id GUID PRIMARY KEY, TargetId TEXT NOT NULL, Name TEXT NOT NULL, Quality TEXT NOT NULL, Status TEXT NOT NULL, Progress FLOAT, UserId TEXT NOT NULL, ItemIds TEXT NOT NULL, UnwatchedOnly BIT, SyncLimit BigInt, LimitType TEXT, IsDynamic BIT, DateCreated DateTime, DateLastModified DateTime, ItemCount int)",
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"create index if not exists idx_SyncJobs on SyncJobs(Id)",
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"create table if not exists SyncJobItems (Id GUID PRIMARY KEY, ItemId TEXT, JobId TEXT, OutputPath TEXT, Status TEXT, TargetId TEXT)",
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"create index if not exists idx_SyncJobItems on SyncJobs(Id)",
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//pragmas
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"pragma temp_store = memory",
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"pragma shrink_memory"
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};
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_connection.RunQueries(queries, _logger);
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PrepareStatements();
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}
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private void PrepareStatements()
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{
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_saveJobCommand = _connection.CreateCommand();
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_saveJobCommand.CommandText = "replace into SyncJobs (Id, TargetId, Name, Quality, Status, Progress, UserId, ItemIds, UnwatchedOnly, SyncLimit, LimitType, IsDynamic, DateCreated, DateLastModified, ItemCount) values (@Id, @TargetId, @Name, @Quality, @Status, @Progress, @UserId, @ItemIds, @UnwatchedOnly, @SyncLimit, @LimitType, @IsDynamic, @DateCreated, @DateLastModified, @ItemCount)";
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@Id");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@TargetId");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@Name");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@Quality");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@Status");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@Progress");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@UserId");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@ItemIds");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@UnwatchedOnly");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@SyncLimit");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@LimitType");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@IsDynamic");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@DateCreated");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@DateLastModified");
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_saveJobCommand.Parameters.Add(_saveJobCommand, "@ItemCount");
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_saveJobItemCommand = _connection.CreateCommand();
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_saveJobItemCommand.CommandText = "replace into SyncJobItems (Id, ItemId, JobId, OutputPath, Status, TargetId) values (@Id, @ItemId, @JobId, @OutputPath, @Status, @TargetId)";
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_saveJobItemCommand.Parameters.Add(_saveJobCommand, "@Id");
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_saveJobItemCommand.Parameters.Add(_saveJobCommand, "@ItemId");
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_saveJobItemCommand.Parameters.Add(_saveJobCommand, "@JobId");
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_saveJobItemCommand.Parameters.Add(_saveJobCommand, "@OutputPath");
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_saveJobItemCommand.Parameters.Add(_saveJobCommand, "@Status");
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}
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private const string BaseJobSelectText = "select Id, TargetId, Name, Quality, Status, Progress, UserId, ItemIds, UnwatchedOnly, SyncLimit, LimitType, IsDynamic, DateCreated, DateLastModified, ItemCount from SyncJobs";
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private const string BaseJobItemSelectText = "select Id, ItemId, JobId, OutputPath, Status, TargetId from SyncJobItems";
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public SyncJob GetJob(string id)
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{
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if (string.IsNullOrEmpty(id))
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{
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throw new ArgumentNullException("id");
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}
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var guid = new Guid(id);
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using (var cmd = _connection.CreateCommand())
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{
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cmd.CommandText = BaseJobSelectText + " where Id=@Id";
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cmd.Parameters.Add(cmd, "@Id", DbType.Guid).Value = guid;
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using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow))
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{
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if (reader.Read())
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{
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return GetJob(reader);
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}
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}
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}
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return null;
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}
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private SyncJob GetJob(IDataReader reader)
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{
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var info = new SyncJob
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{
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Id = reader.GetGuid(0).ToString("N"),
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TargetId = reader.GetString(1),
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Name = reader.GetString(2)
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};
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if (!reader.IsDBNull(3))
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{
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info.Quality = (SyncQuality)Enum.Parse(typeof(SyncQuality), reader.GetString(3), true);
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}
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if (!reader.IsDBNull(4))
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{
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info.Status = (SyncJobStatus)Enum.Parse(typeof(SyncJobStatus), reader.GetString(4), true);
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}
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if (!reader.IsDBNull(5))
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{
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info.Progress = reader.GetDouble(5);
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}
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if (!reader.IsDBNull(6))
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{
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info.UserId = reader.GetString(6);
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}
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if (!reader.IsDBNull(7))
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{
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info.RequestedItemIds = reader.GetString(7).Split(',').ToList();
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}
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if (!reader.IsDBNull(8))
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{
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info.UnwatchedOnly = reader.GetBoolean(8);
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}
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if (!reader.IsDBNull(9))
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{
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info.Limit = reader.GetInt64(9);
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}
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if (!reader.IsDBNull(10))
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{
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info.LimitType = (SyncLimitType)Enum.Parse(typeof(SyncLimitType), reader.GetString(10), true);
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}
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info.IsDynamic = reader.GetBoolean(11);
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info.DateCreated = reader.GetDateTime(12).ToUniversalTime();
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info.DateLastModified = reader.GetDateTime(13).ToUniversalTime();
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info.ItemCount = reader.GetInt32(14);
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return info;
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}
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public Task Create(SyncJob job)
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{
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return Update(job);
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}
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public async Task Update(SyncJob job)
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{
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if (job == null)
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{
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throw new ArgumentNullException("job");
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}
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await _writeLock.WaitAsync().ConfigureAwait(false);
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IDbTransaction transaction = null;
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try
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{
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transaction = _connection.BeginTransaction();
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var index = 0;
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_saveJobCommand.GetParameter(index++).Value = new Guid(job.Id);
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_saveJobCommand.GetParameter(index++).Value = job.TargetId;
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_saveJobCommand.GetParameter(index++).Value = job.Name;
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_saveJobCommand.GetParameter(index++).Value = job.Quality;
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_saveJobCommand.GetParameter(index++).Value = job.Status;
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_saveJobCommand.GetParameter(index++).Value = job.Progress;
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_saveJobCommand.GetParameter(index++).Value = job.UserId;
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_saveJobCommand.GetParameter(index++).Value = string.Join(",", job.RequestedItemIds.ToArray());
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_saveJobCommand.GetParameter(index++).Value = job.UnwatchedOnly;
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_saveJobCommand.GetParameter(index++).Value = job.Limit;
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_saveJobCommand.GetParameter(index++).Value = job.LimitType;
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_saveJobCommand.GetParameter(index++).Value = job.IsDynamic;
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_saveJobCommand.GetParameter(index++).Value = job.DateCreated;
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_saveJobCommand.GetParameter(index++).Value = job.DateLastModified;
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_saveJobCommand.GetParameter(index++).Value = job.ItemCount;
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_saveJobCommand.Transaction = transaction;
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_saveJobCommand.ExecuteNonQuery();
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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 record:", 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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public QueryResult<SyncJob> GetJobs(SyncJobQuery query)
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{
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if (query == null)
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{
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throw new ArgumentNullException("query");
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}
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using (var cmd = _connection.CreateCommand())
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{
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cmd.CommandText = BaseJobSelectText;
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var whereClauses = new List<string>();
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var startIndex = query.StartIndex ?? 0;
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if (startIndex > 0)
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{
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whereClauses.Add(string.Format("Id NOT IN (SELECT Id FROM SyncJobs ORDER BY DateLastModified DESC LIMIT {0})",
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startIndex.ToString(_usCulture)));
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}
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if (whereClauses.Count > 0)
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{
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cmd.CommandText += " where " + string.Join(" AND ", whereClauses.ToArray());
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}
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cmd.CommandText += " ORDER BY DateLastModified DESC";
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if (query.Limit.HasValue)
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{
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cmd.CommandText += " LIMIT " + query.Limit.Value.ToString(_usCulture);
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}
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cmd.CommandText += "; select count (Id) from SyncJobs";
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var list = new List<SyncJob>();
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var count = 0;
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using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess))
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{
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while (reader.Read())
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{
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list.Add(GetJob(reader));
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}
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if (reader.NextResult() && reader.Read())
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{
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count = reader.GetInt32(0);
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}
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}
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return new QueryResult<SyncJob>()
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{
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Items = list.ToArray(),
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TotalRecordCount = count
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};
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}
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}
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public SyncJobItem GetJobItem(string id)
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{
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if (string.IsNullOrEmpty(id))
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{
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throw new ArgumentNullException("id");
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}
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var guid = new Guid(id);
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using (var cmd = _connection.CreateCommand())
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{
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cmd.CommandText = BaseJobItemSelectText + " where Id=@Id";
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cmd.Parameters.Add(cmd, "@Id", DbType.Guid).Value = guid;
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using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow))
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{
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if (reader.Read())
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{
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return GetSyncJobItem(reader);
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}
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}
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}
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return null;
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}
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public Task Create(SyncJobItem jobItem)
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{
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return Update(jobItem);
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}
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public async Task Update(SyncJobItem jobItem)
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{
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if (jobItem == null)
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{
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throw new ArgumentNullException("jobItem");
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}
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await _writeLock.WaitAsync().ConfigureAwait(false);
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IDbTransaction transaction = null;
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try
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{
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transaction = _connection.BeginTransaction();
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var index = 0;
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_saveJobItemCommand.GetParameter(index++).Value = new Guid(jobItem.Id);
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_saveJobItemCommand.GetParameter(index++).Value = jobItem.ItemId;
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_saveJobItemCommand.GetParameter(index++).Value = jobItem.JobId;
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_saveJobItemCommand.GetParameter(index++).Value = jobItem.OutputPath;
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_saveJobItemCommand.GetParameter(index++).Value = jobItem.Status;
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_saveJobItemCommand.GetParameter(index++).Value = jobItem.TargetId;
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_saveJobItemCommand.Transaction = transaction;
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_saveJobItemCommand.ExecuteNonQuery();
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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 record:", 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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private SyncJobItem GetSyncJobItem(IDataReader reader)
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{
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var info = new SyncJobItem
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{
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Id = reader.GetGuid(0).ToString("N"),
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ItemId = reader.GetString(1),
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JobId = reader.GetString(2)
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};
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if (!reader.IsDBNull(3))
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{
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info.OutputPath = reader.GetString(3);
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}
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if (!reader.IsDBNull(4))
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{
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info.Status = (SyncJobStatus)Enum.Parse(typeof(SyncJobStatus), reader.GetString(4), true);
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}
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info.TargetId = reader.GetString(5);
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return info;
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}
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/// <summary>
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/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
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/// </summary>
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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private readonly object _disposeLock = new object();
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/// <summary>
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/// Releases unmanaged and - optionally - managed resources.
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/// </summary>
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/// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
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protected virtual void Dispose(bool dispose)
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{
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if (dispose)
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{
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try
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{
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lock (_disposeLock)
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{
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if (_connection != null)
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{
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if (_connection.IsOpen())
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{
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_connection.Close();
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}
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_connection.Dispose();
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_connection = null;
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}
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}
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}
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catch (Exception ex)
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{
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_logger.ErrorException("Error disposing database", ex);
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}
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}
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}
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}
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}
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