/// <summary>
/// 执行审批流程中的命令WorkflowCommand
/// </summary>
/// <param name="processId"></param>
/// <param name="identityId">执行该命令的用户ID</param>
/// <param name="impersonatedIdentityId">针对谁执行的，对方的用户ID,因为审批流程中的活动总是在两个或者多个人之间流转的
/// 如果一个人执行活动，并同时向多个人分发，怎么办，例如 会签的情况
/// </param>
/// <param name="command"></param>
public void ExecuteCommand(Guid processId, Guid identityId, Guid impersonatedIdentityId, WorkflowCommand command)
{
//TODO Workflow Temporary
//if (!command.Validate())
// throw new CommandNotValidException();
var processInstance = Builder.GetProcessInstance(processId);
SetProcessNewStatus(processInstance, ProcessStatus.Running);
IEnumerable <TransitionDefinition> transitions;
try
{
//根据当前的流程实例填写系统定义的流程参数及参数值，系统要统一维护该参数值，
//以保证状态和流程的运转
PersistenceProvider.FillSystemProcessParameters(processInstance);
if (processInstance.CurrentActivityName != command.ValidForActivityName)
{
throw new CommandNotValidForStateException();
}
transitions =
processInstance.ProcessScheme.GetCommandTransitionForActivity(
processInstance.ProcessScheme.FindActivity(processInstance.CurrentActivityName),
command.CommandName);
if (!transitions.Any())
{
throw new InvalidOperationException();
}
}
catch (Exception ex)
{
SetProcessNewStatus(processInstance, ProcessStatus.Idled);
throw;
}
//命令需要的参数及参数值
var parametersLocal = new List <ParameterDefinitionWithValue>();
try
{
foreach (var commandParameter in command.Parameters)
{
//从processInstance获取命令需要的参数值
var parameterDefinition = processInstance.ProcessScheme.GetParameterDefinition(commandParameter.Name);
if (parameterDefinition != null)
{
parametersLocal.Add(ParameterDefinition.Create(parameterDefinition, commandParameter.Value));
}
}
parametersLocal.Add(ParameterDefinition.Create(DefaultDefinitions.ParameterCurrentCommand,
(object)command.CommandName));
parametersLocal.Add(ParameterDefinition.Create(DefaultDefinitions.ParameterIdentityId, identityId));
parametersLocal.Add(ParameterDefinition.Create(DefaultDefinitions.ParameterImpersonatedIdentityId,
impersonatedIdentityId));
parametersLocal.Add(ParameterDefinition.Create(DefaultDefinitions.ParameterSchemeId,
processInstance.SchemeId));
parametersLocal.ForEach(processInstance.AddParameter);
//保存运行前的状态
PersistenceProvider.SavePersistenceParameters(processInstance);
PersistenceProvider.FillPersistedProcessParameters(processInstance);
}
catch (Exception)
{
SetProcessNewStatus(processInstance, ProcessStatus.Idled);
throw;
}
var newExecutionParameters = new List <ExecutionRequestParameters>();
newExecutionParameters.AddRange(
transitions.Select(
at =>
ExecutionRequestParameters.Create(processInstance.ProcessId, processInstance.ProcessParameters, at)));
try
{
Bus.QueueExecution(newExecutionParameters);
}
catch (Exception ex)
{
Logger.Log.Error(string.Format("Error Execute Command Workflow Id={0}", processInstance.ProcessId), ex);
SetProcessNewStatus(processInstance, ProcessStatus.Idled);
throw;
}
}
