/// <summary>
/// 动态获取路线，根据决策节点设置条件表达式，自动去判断流转的路线
/// </summary>
/// <returns>路线</returns>
public Transition GetTransition(Node n)
{
Command command = n.Command;
IList <WorkflowConfiguration> settings = ConfigurationService.Query();
WorkflowConfiguration config = settings
.Where(cfg => cfg.ID == long.Parse(command.ID))
.FirstOrDefault();
using ISession session = DbFactory.CreateSessionFactory(config.ConnectionString, config.ProviderName).OpenSession();
try
{
DataTable resultSet = new DataTable(Guid.NewGuid().ToString());
IDbCommand cmd = session.Connection.CreateCommand();
IDbDataParameter dataParameter = cmd.CreateParameter();
dataParameter.ParameterName = "InstanceID";
dataParameter.Value = n.InstanceID;
dataParameter.Size = 50;
dataParameter.DbType = DbType.String;
dataParameter.Direction = ParameterDirection.Input;
cmd.Parameters.Add(dataParameter);
cmd.CommandText = command.Text;
DataTable result = new DataTable();
using (IDataReader reader = cmd.ExecuteReader())
{
resultSet.Load(reader);
reader.Close();
}
Transition instance = null;
List <Transition> transitions = n.Transitions.ToList();
if (resultSet.Rows.Count > 0)
{
foreach (Transition transition in transitions)
{
if (!String.IsNullOrEmpty(transition.Expression) && resultSet.Select(transition.Expression).Length > 0)
{
instance = transition;
break;
}
}
}
resultSet.Dispose();
return(instance);
}
catch (Exception ex)
{
throw ex;
}
}
public void Execute(Node n)
{
if (n.Command != null)
{
Command command = n.Command;
IList <WorkflowConfiguration> settings = ConfigurationService.Query();
WorkflowConfiguration config = settings.Where(cfg => cfg.ID == long.Parse(command.ID)).FirstOrDefault();
try
{
using ISession session = DbFactory.CreateSessionFactory(config.ConnectionString, config.ProviderName).OpenSession();
session.CreateSQLQuery(command.Text)
.SetParameter("InstanceID", n.InstanceID)
.ExecuteUpdate();
}
catch (Exception ex)
{
throw ex;
}
}
}
