/// <summary>
/// Attempts to retrieve a <see cref="TrackingWorkflowInstance" /> from
/// the tracking store based upon the specified instance identifier.
/// </summary>
/// <param name="instanceId">
/// The <see cref="Guid" /> of the workflow instance for which the
/// tracking data is requested.
/// </param>
/// <param name="trackingWorkflowInstance">
/// When this method returns <c>true</c>, contains a <see cref="TrackingWorkflowInstance" />
/// that provides access to the tracking data associated with the workflow instance.
/// This parameter is passed uninitiailized.
/// </param>
/// <returns>
/// <c>true</c> if tracking data is available for the requested workflow
/// instance, <c>false</c> otherwise.
/// </returns>
public Boolean TryGetWorkflow(Guid instanceId, out TrackingWorkflowInstance trackingWorkflowInstance)
{
using (DbCommand dbCommand = CreateCommand(_nameResolver.ResolveCommandName(TrackingCommandName.GetWorkflow), CommandType.StoredProcedure))
{
AddParameter(dbCommand, _nameResolver.ResolveParameterName(
TrackingCommandName.GetWorkflow,
TrackingParameterName.InstanceId), instanceId,
AdoDbType.Guid);
AddParameter(dbCommand, _nameResolver.ResolveParameterName(
TrackingCommandName.GetWorkflow,
TrackingParameterName.TrackingWorkflowInstances), instanceId,
AdoDbType.Cursor);
using (IDataReader dataReader = dbCommand.ExecuteReader())
{
if (dataReader.Read())
{
trackingWorkflowInstance = buildTrackingWorkflowInstance(
dataReader, TrackingCommandName.GetWorkflow);
}
else
{
trackingWorkflowInstance = null;
}
}
}
return(trackingWorkflowInstance != null);
}
/// <summary>
/// Retrieves a <see cref="TrackingWorkflowInstance" /> from the
/// tracking store based upon the specified instance identifier.
/// </summary>
/// <param name="instanceId">
/// The <see cref="Guid" /> of the workflow instance for which the
/// tracking data is requested.
/// </param>
/// <returns>
/// A <see cref="TrackingWorkflowInstance" /> containing tracking data
/// associated with the workflow instance identifier or <c>null</c> if no
/// data was found in the tracking store.
/// </returns>
public TrackingWorkflowInstance GetWorkflow(Guid instanceId)
{
using (ITrackingQueryResourceAccessor resourceAccessor = CreateAccessor(resourceProvider))
{
TrackingWorkflowInstance trackingWorkflowInstance = resourceAccessor.GetWorkflow(instanceId);
if (trackingWorkflowInstance != null)
{
trackingWorkflowInstance.QueryManager = this;
}
return(trackingWorkflowInstance);
}
}
/// <summary>
/// Attempts to retrieve a <see cref="TrackingWorkflowInstance" /> from
/// the tracking store based upon the specified instance identifier.
/// </summary>
/// <param name="instanceId">
/// The <see cref="Guid" /> of the workflow instance for which the
/// tracking data is requested.
/// </param>
/// <param name="trackingWorkflowInstance">
/// When this method returns <c>true</c>, contains a <see cref="TrackingWorkflowInstance" />
/// that provides access to the tracking data associated with the workflow instance.
/// This parameter is passed uninitiailized.
/// </param>
/// <returns>
/// <c>true</c> if tracking data is available for the requested workflow
/// instance, <c>false</c> otherwise.
/// </returns>
public Boolean TryGetWorkflow(Guid instanceId, out TrackingWorkflowInstance trackingWorkflowInstance)
{
using (ITrackingQueryResourceAccessor resourceAccessor = CreateAccessor(resourceProvider))
{
Boolean hasTrackingData = resourceAccessor.TryGetWorkflow(instanceId, out trackingWorkflowInstance);
if (trackingWorkflowInstance != null)
{
trackingWorkflowInstance.QueryManager = this;
}
return(hasTrackingData);
}
}