/// <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(ASTNode n)
{
Command command = this.CommandService.Query(n.InstanceID)
.Where(e => e.RelationshipID == n.NID)
.FirstOrDefault();
IList <WorkflowConfiguration> settings = ConfigurationService.Query();
WorkflowConfiguration config = settings
.Where(cfg => cfg.ID == long.Parse(command.ID))
.FirstOrDefault();
IDbConnection connection = DbFactory.CreateConnection(config.ProviderName, config.ConnectionString);
try
{
DataTable resultSet = new DataTable(Guid.NewGuid().ToString());
using (IDataReader reader = connection.ExecuteReader(command.Text, new { n.InstanceID }))
{
resultSet.Load(reader);
reader.Close();
}
Transition instance = null;
List <Transition> transitions =
this.TransitionService
.Query(n.InstanceID)
.Where(t => t.RelationshipID == n.NID)
.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();
IDbConnection connection = DbFactory.CreateConnection(config.ProviderName, config.ConnectionString);
try
{
connection.Execute(command.Text, new { n.InstanceID });
}
catch (Exception ex)
{
throw ex;
}
}
}
