protected internal override object Execute(ICommandContext commandContext, ITaskEntity task)
{
bool assignedToNoOne = false;
if (IdentityLinkType.ASSIGNEE.Equals(identityType))
{
string assigneeUser = null;
if (string.IsNullOrWhiteSpace(identityId) == false)
{
//TODO: 考虑性能问题，暂时不要获取人员信息
//assigneeUser = AsyncHelper.RunSync(() => userService.GetUser(identityId))?.FullName;
}
commandContext.TaskEntityManager.ChangeTaskAssignee(task, identityId, assigneeUser);
assignedToNoOne = identityId is null;
}
else if (IdentityLinkType.OWNER.Equals(identityType))
{
commandContext.TaskEntityManager.ChangeTaskOwner(task, identityId);
}
else if (IDENTITY_USER == identityIdType)
{
task.AddUserIdentityLink(identityId, identityType);
}
else if (IDENTITY_GROUP == identityIdType)
{
task.AddGroupIdentityLink(identityId, identityType);
}
bool forceNullUserId = false;
if (assignedToNoOne)
{
// ACT-1317: Special handling when assignee is set to NULL, a
// CommentEntity notifying of assignee-delete should be created
forceNullUserId = true;
}
if (IDENTITY_USER == identityIdType)
{
commandContext.HistoryManager.CreateUserIdentityLinkComment(taskId, identityId, identityType, true, forceNullUserId);
}
else
{
commandContext.HistoryManager.CreateGroupIdentityLinkComment(taskId, identityId, identityType, true);
}
return(null);
}
/// <summary>
///
/// </summary>
/// <param name="taskEntityManager"></param>
/// <param name="assignee"></param>
/// <param name="owner"></param>
/// <param name="candidateUsers"></param>
/// <param name="candidateGroups"></param>
/// <param name="task"></param>
/// <param name="expressionManager"></param>
/// <param name="execution"></param>
protected internal virtual void HandleAssignments(ITaskEntityManager taskEntityManager, string assignee, string owner, IList <string> candidateUsers, IList <string> candidateGroups, ITaskEntity task, ExpressionManager expressionManager, IExecutionEntity execution)
{
if (!string.IsNullOrWhiteSpace(assignee))
{
object assigneeExpressionValue = expressionManager.CreateExpression(assignee).GetValue(execution);
string assigneeValue = null;
if (assigneeExpressionValue != null)
{
assigneeValue = assigneeExpressionValue.ToString();
}
string assigneeUser = null;
if (string.IsNullOrWhiteSpace(assigneeValue) == false)
{
IUserServiceProxy userService = ProcessEngineServiceProvider.Resolve <IUserServiceProxy>();
var user = userService.GetUser(assigneeValue)
.ConfigureAwait(false)
.GetAwaiter()
.GetResult();
assigneeUser = user?.FullName;
task.SetVariableLocal(assigneeValue, user);
}
taskEntityManager.ChangeTaskAssigneeNoEvents(task, assigneeValue, assigneeUser);
}
if (!string.IsNullOrWhiteSpace(owner))
{
object ownerExpressionValue = expressionManager.CreateExpression(owner).GetValue(execution);
string ownerValue = null;
if (ownerExpressionValue != null)
{
ownerValue = ownerExpressionValue.ToString();
}
taskEntityManager.ChangeTaskOwner(task, ownerValue);
}
if (candidateGroups != null && candidateGroups.Count > 0)
{
foreach (string candidateGroup in candidateGroups)
{
IExpression groupIdExpr = expressionManager.CreateExpression(candidateGroup);
object value = groupIdExpr.GetValue(execution);
if (value is string @string)
{
IList <string> candidates = ExtractCandidates(@string);
task.AddCandidateGroups(candidates);
}
else if (value is ICollection)
{
task.AddCandidateGroups((ICollection <string>)value);
}
else
{
throw new ActivitiIllegalArgumentException("Expression did not resolve to a string or collection of strings");
}
}
}
if (candidateUsers != null && candidateUsers.Count > 0)
{
foreach (string candidateUser in candidateUsers)
{
IExpression userIdExpr = expressionManager.CreateExpression(candidateUser);
object value = userIdExpr.GetValue(execution);
if (value is string @string)
{
IList <string> candidates = ExtractCandidates(@string);
task.AddCandidateUsers(candidates);
}
else if (value is ICollection)
{
task.AddCandidateUsers((ICollection <string>)value);
}
else
{
throw new ActivitiException("Expression did not resolve to a string or collection of strings");
}
}
}
if (userTask.CustomUserIdentityLinks != null && userTask.CustomUserIdentityLinks.Count > 0)
{
foreach (string customUserIdentityLinkType in userTask.CustomUserIdentityLinks.Keys)
{
foreach (string userIdentityLink in userTask.CustomUserIdentityLinks[customUserIdentityLinkType])
{
IExpression idExpression = expressionManager.CreateExpression(userIdentityLink);
object value = idExpression.GetValue(execution);
if (value is string @string)
{
IList <string> userIds = ExtractCandidates(@string);
foreach (string userId in userIds)
{
task.AddUserIdentityLink(userId, customUserIdentityLinkType);
}
}
else if (value is ICollection collection)
{
IEnumerator userIdSet = collection.GetEnumerator();
while (userIdSet.MoveNext())
{
task.AddUserIdentityLink((string)userIdSet.Current, customUserIdentityLinkType);
}
}
else
{
throw new ActivitiException("Expression did not resolve to a string or collection of strings");
}
}
}
}
if (userTask.CustomGroupIdentityLinks != null && userTask.CustomGroupIdentityLinks.Count > 0)
{
foreach (string customGroupIdentityLinkType in userTask.CustomGroupIdentityLinks.Keys)
{
foreach (string groupIdentityLink in userTask.CustomGroupIdentityLinks[customGroupIdentityLinkType])
{
IExpression idExpression = expressionManager.CreateExpression(groupIdentityLink);
object value = idExpression.GetValue(execution);
if (value is string @string)
{
IList <string> groupIds = ExtractCandidates(@string);
foreach (string groupId in groupIds)
{
task.AddGroupIdentityLink(groupId, customGroupIdentityLinkType);
}
}
else if (value is ICollection collection)
{
IEnumerator groupIdSet = collection.GetEnumerator();
while (groupIdSet.MoveNext())
{
task.AddGroupIdentityLink((string)groupIdSet.Current, customGroupIdentityLinkType);
}
}
else
{
throw new ActivitiException("Expression did not resolve to a string or collection of strings");
}
}
}
}
}