73 lines
3.7 KiB
C#
73 lines
3.7 KiB
C#
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//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.Activities.DurableInstancing
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{
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using System.Collections.Generic;
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using System.Data;
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using System.Data.SqlClient;
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using System.Runtime.DurableInstancing;
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using System.Transactions;
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using System.Globalization;
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sealed class TryLoadRunnableWorkflowAsyncResult : LoadWorkflowAsyncResult
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{
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static readonly string commandText = string.Format(CultureInfo.InvariantCulture, "{0}.[TryLoadRunnableInstance]", SqlWorkflowInstanceStoreConstants.DefaultSchema);
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public TryLoadRunnableWorkflowAsyncResult
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(
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InstancePersistenceContext context,
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InstancePersistenceCommand command,
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SqlWorkflowInstanceStore store,
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SqlWorkflowInstanceStoreLock storeLock,
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Transaction currentTransaction,
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TimeSpan timeout,
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AsyncCallback callback,
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object state
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) :
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base(context, command, store, storeLock, currentTransaction, timeout, callback, state)
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{
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if (base.Store.WorkflowHostType == Guid.Empty)
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{
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throw FxTrace.Exception.AsError(new InstancePersistenceCommandException(command.Name, SR.TryLoadRequiresWorkflowType, null));
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}
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}
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protected override void GenerateSqlCommand(SqlCommand command)
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{
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double operationTimeout = this.TimeoutHelper.RemainingTime().TotalMilliseconds;
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command.Parameters.Add(new SqlParameter { ParameterName = "@surrogateLockOwnerId", SqlDbType = SqlDbType.BigInt, Value = base.StoreLock.SurrogateLockOwnerId });
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command.Parameters.Add(new SqlParameter { ParameterName = "@workflowHostType", SqlDbType = SqlDbType.UniqueIdentifier, Value = base.Store.WorkflowHostType });
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command.Parameters.Add(new SqlParameter { ParameterName = "@operationType", SqlDbType = SqlDbType.TinyInt, Value = LoadType.LoadByInstance });
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command.Parameters.Add(new SqlParameter { ParameterName = "@handleInstanceVersion", SqlDbType = SqlDbType.BigInt, Value = base.InstancePersistenceContext.InstanceVersion });
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command.Parameters.Add(new SqlParameter { ParameterName = "@handleIsBoundToLock", SqlDbType = SqlDbType.Bit, Value = base.InstancePersistenceContext.InstanceView.IsBoundToLock });
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command.Parameters.Add(new SqlParameter { ParameterName = "@encodingOption", SqlDbType = SqlDbType.TinyInt, Value = base.Store.InstanceEncodingOption });
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command.Parameters.Add(new SqlParameter { ParameterName = "@operationTimeout", SqlDbType = SqlDbType.Int, Value = (operationTimeout < Int32.MaxValue) ? Convert.ToInt32(operationTimeout) : Int32.MaxValue });
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}
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protected override string GetSqlCommandText()
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{
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return TryLoadRunnableWorkflowAsyncResult.commandText;
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}
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protected override Exception ProcessSqlResult(SqlDataReader reader)
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{
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Exception exception = StoreUtilities.GetNextResultSet(this.InstancePersistenceCommand.Name, reader);
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if (exception == null)
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{
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bool runnableInstanceFound = reader.GetBoolean(1);
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if (!runnableInstanceFound || base.ProcessSqlResult(reader) != null)
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{
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base.Store.UpdateEventStatus(false, HasRunnableWorkflowEvent.Value);
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base.StoreLock.InstanceDetectionTask.ResetTimer(false);
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}
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}
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return exception;
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}
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}
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}
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