/// <summary>
/// Approve single requisition and persist with database
/// </summary>
/// <param name="requisition">requisition object</param>
public void ApproveRequisition(Requisition requisition)
{
try
{
if (ValidateRequisition(requisition, RequisitionMethod.Approve))
{
requisitionDAO.ApproveRequisition(requisition);
}
else
{
ErrorMessage("Approval of Requisition Failed");
}
}
catch (Exception)
{
throw new ApprovalException("Approval Failed.");
}
}
/// <summary>
/// Approval of the requisition
/// </summary>
/// <param name="requisition">requisition object</param>
public void ApproveRequisition(Requisition requisition)
{
try
{
using (TransactionScope ts = new TransactionScope())
{
var tempRequisition = (from p in context.Requisitions
where p.RequisitionID == requisition.RequisitionID
select p).FirstOrDefault<Requisition>();
var status = (from s in context.Statuses where s.Name == "Approved & Pending" select s).FirstOrDefault<Status>();
//requisition status will be changed to "Approved & Pending"
UpdateRequisitionStatus(tempRequisition, status);
context.SaveChanges();
ts.Complete();
}
}
catch (Exception)
{
throw new RequisitionException("Approval Failed.");
}
}
/// <summary>
/// Cancel the requisition before approval
/// </summary>
/// <param name="cancelRequisition">requisition object</param>
public void CancelRequisition(Requisition cancelRequisition)
{
try
{
using (TransactionScope ts = new TransactionScope())
{
var tempRequisition = (from p in context.Requisitions
where p.RequisitionID == cancelRequisition.RequisitionID
select p).FirstOrDefault<Requisition>();
var status = (from s in context.Statuses where s.Name == "Cancel" select s).FirstOrDefault<Status>();
UpdateRequisitionStatus(tempRequisition, status);
context.SaveChanges();
ts.Complete();
}
}
catch (Exception)
{
throw new RequisitionException("Approval Failed");
}
}
/// <summary>
/// Cancel a new requisition and persist with database
/// </summary>
/// <param name="requisition">requisition object</param>
public void CancelRequisition(Requisition requisition)
{
if (ValidateRequisition(requisition, RequisitionMethod.Cancel))
{
requisitionDAO.CancelRequisition(requisition);
}
else
{
ErrorMessage("Cancel Requisition Failed.");
}
}
/// <summary>
/// Create a new requisition and persist with database
/// </summary>
/// <param name="requisition">requisition object</param>
public void CreateRequisition(Requisition requisition)
{
try
{
//Create a transaction scope
using (TransactionScope ts = new TransactionScope())
{
if (requisition != null)
{
//Add requisition to context
context.AddToRequisitions(requisition);
//Save the changes
context.SaveChanges();
//Notify Transaction completed
ts.Complete();
}
}
}
catch (Exception ex)
{
//Exception thrown incase if insert fails
throw new RequisitionException("Create requisition failed." +ex.Message);
}
}
/// <summary>
/// Update requisition status and persist with database
/// </summary>
/// <param name="requisition">requisition object</param>
/// <param name="status">status object</param>
public void UpdateRequisitionStatus(Requisition requisition, Status status)
{
if (ValidateRequisition(requisition, RequisitionMethod.UpdateStatus))
{
requisitionDAO.UpdateRequisitionStatus(requisition, status);
}
}
/// <summary>
/// Validate Requisition
/// </summary>
/// <param name="requisition">Requisition object</param>
/// <param name="requisitionMethod">enum requisitionMethod</param>
/// <returns>boolean</returns>
private bool ValidateRequisition(Requisition requisition, RequisitionMethod requisitionMethod)
{
try
{
if (requisition != null)
{
if (requisitionMethod == RequisitionMethod.Create)
{
if ((requisition.CreatedBy != 0 || requisition.CreatedByUser != null) &&
(requisition.DepartmentID != 0 || requisition.Department != null) &&
(requisition.RequisitionForm != string.Empty || requisition.RequisitionForm != null) &&
(requisition.StatusID != 0 || requisition.Status != null) &&
(requisition.UrgencyID != 0 || requisition.Urgency != null) &&
(requisition.DateRequested != null && requisition.DateRequested.Date.ToShortDateString() == DateTime.Now.Date.ToShortDateString()) &&
(requisition.ApprovedByUser == null) && (requisition.DateApproved == null))
{
return true;
}
}
if (requisitionMethod == RequisitionMethod.Update)
{
if ((requisition.CreatedBy != 0 || requisition.CreatedByUser != null) &&
(requisition.DepartmentID != 0 || requisition.Department != null) &&
(requisition.RequisitionForm != string.Empty || requisition.RequisitionForm != null) &&
(requisition.StatusID == 2 || requisition.Status != null) &&
(requisition.UrgencyID != 0 || requisition.Urgency != null) &&
(requisition.DateRequested != null && requisition.DateRequested.Date.ToShortDateString() != string.Empty) &&
(requisition.ApprovedBy != 0))
{
return true;
}
else
{
try
{
throw new RequisitionException("Update Requisition Failed");
}
catch (Exception)
{
throw;
}
}
}
if (requisitionMethod == RequisitionMethod.UpdateStatus)
{
if (requisition.RequisitionID != 0)
{
return true;
}
}
if (requisitionMethod == RequisitionMethod.Approve || requisitionMethod == RequisitionMethod.Reject)
{
if (requisition.ApprovedBy != 0 && requisition.ApprovedByUser.Role.Contains("DepartmentHeads"))
{
return true;
}
}
if (requisitionMethod == RequisitionMethod.Cancel)
{
if (requisition.ApprovedBy == 0 || requisition.ApprovedBy == null)
{
return true;
}
}
}
return false;
}
catch (Exception)
{
throw new RequisitionException("Create Requisition failed. Please try again later");
}
}
/// <summary>
///
/// Update the requisition before approval
/// </summary>
/// <param name="updateRequisition">requisition object</param>
public void UpdateRequisition(Requisition updateRequisition)
{
try
{
using (TransactionScope ts = new TransactionScope())
{
var tempReq = (from r in context.Requisitions
where r.RequisitionID == updateRequisition.RequisitionID
select r).FirstOrDefault<Requisition>();
tempReq = updateRequisition;
context.SaveChanges();
ts.Complete();
}
}
catch (Exception ex)
{
throw new RequisitionException("Update requisition failed." + ex.Message);
}
}
protected void PopulateData(Requisition requisition)
{
List<RequisitionItem> reqItems = null;
List<SpecialRequisitionItem> splReqItems = null;
if (requisition.RequisitionID > 0)
{
reqItems = requisitionManager.GetAllRequisitionItems(requisition);
splReqItems = requisitionManager.GetAllSpecialRequisitionItems(requisition);
if (reqItems.Count > 0)
{
RequestItemGridView.DataSource = reqItems;
RequestItemGridView.DataKeyNames = new string[] { "RequisitionItemID" };
}
if (splReqItems.Count > 0)
{
SpecialRequestItemGridView.DataSource = splReqItems;
SpecialRequestItemGridView.DataKeyNames = new string[] { "SpecialStationeryID" };
}
DetailsView1.DataSource = reqItems;
DetailsView2.DataSource = splReqItems;
DataBind();
}
if (requisition.RequisitionID == 0)
{
reqItems = requisition.RequisitionItems.ToList<RequisitionItem>();
splReqItems = requisition.SpecialRequisitionItems.ToList<SpecialRequisitionItem>();
if (reqItems.Count > 0)
{
RequestItemGridView.DataSource = reqItems;
RequestItemGridView.DataKeyNames = new string[] { "RequisitionItemID" };
}
if (splReqItems.Count > 0)
{
SpecialRequestItemGridView.DataSource = splReqItems;
}
DetailsView1.DataSource = reqItems;
}
}
/// <summary>
/// Get All special RequisitionItems in the requisition form
/// </summary>
/// <param name="requisition"></param>
/// <returns></returns>
public List<SpecialRequisitionItem> GetAllSpecialRequisitionItems(Requisition requisition)
{
try
{
return (from ri in context.SpecialRequisitionItems
where ri.RequisitionID == requisition.RequisitionID
select ri).ToList<SpecialRequisitionItem>();
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// Generate the requisitionID for each requisition
/// </summary>
/// <param name="requisition">requisition object</param>
/// <returns>string</returns>
public string GetRequisitionNumber(Requisition requisition)
{
var department = (from d in context.Departments where d.DepartmentID == requisition.DepartmentID select d).FirstOrDefault<Department>();
var riList = (from r in context.Requisitions where r.DepartmentID == department.DepartmentID select r).ToList<Requisition>();
int count;
if (riList.Count == 0)
{
count = 0;
}
else
{
Requisition ri = riList.Last<Requisition>();
String[] temp = ri.RequisitionForm.Split('/');
count = Convert.ToInt32(temp[1]);
}
return department.Code + "/" + String.Format("{0:0000}", (++count)) + "/" + DateTime.Now.ToString("yy");
}
/// <summary>
/// Get All RequisitionItems in the requisition form
/// </summary>
/// <param name="requisition"></param>
/// <returns></returns>
public List<RequisitionItem> GetAllRequisitionItems(Requisition requisition)
{
try
{
List<RequisitionItem> temp = requisitionDAO.GetAllRequisitionItems(requisition);
if (temp != null)
return temp;
ErrorMessage("Result Not Found");
return null;
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// Get All special RequisitionItems in the requisition form
/// </summary>
/// <param name="requisition"></param>
/// <returns></returns>
public List<SpecialRequisitionItem> GetAllSpecialRequisitionItems(Requisition requisition)
{
try
{
List<SpecialRequisitionItem> temp = requisitionDAO.GetAllSpecialRequisitionItems(requisition);
if (temp != null)
{
return temp;
}
else
{
ErrorMessage("Result not found");
return null;
}
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// Create a new requisition and persist with database
/// </summary>
/// <param name="requisition">requisition object</param>
public Requisition CreateRequisition(Requisition requisition)
{
try
{
bool isTestOK = false;
StatusSearchDTO sdto = new StatusSearchDTO() { Name = "Pending" };
Status status = requisitionDAO.GetStatusByName(sdto);
requisition.StatusID = status.StatusID;
if (ValidateRequisition(requisition, RequisitionMethod.Create))
{
if (requisition.RequisitionItems.Count > 0 || requisition.SpecialRequisitionItems.Count > 0)
{
foreach (RequisitionItem requisitionItem in requisition.RequisitionItems)
{
isTestOK = ValidateRequisitionItem(requisitionItem, RequisitionMethod.Create);
if (!isTestOK)
{
break;
}
}
foreach (SpecialRequisitionItem specialRequisitionItem in requisition.SpecialRequisitionItems)
{
isTestOK = ValidateSpecialRequisitionItem(specialRequisitionItem, RequisitionMethod.Create);
if (!isTestOK)
{
break;
}
}
}
if (isTestOK)
{
requisitionDAO.CreateRequisition(requisition);
return requisition;
}
else
{
ErrorMessage("Create Requisition Failed. Please check the input.");
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
return null;
}
protected void Page_Load(object sender, EventArgs e)
{
//Create instance of new requisition
Requisition r = new Requisition();
UserDAO user = new UserDAO();
RequisitionManager rq = new RequisitionManager();
CatalogDAO cat = new CatalogDAO();
//set the properties of requisition object
r.DepartmentID = user.GetDepartmentByID(1).DepartmentID;
r.CreatedBy = user.GetUserByID(1).UserID;
r.StatusID = rq.GetStatusByID(new Status() { StatusID = 1}).StatusID;
r.ApprovedBy = user.GetUserByID(2).UserID;
r.UrgencyID = rq.GetUrgencyByID(new Urgency() { UrgencyID = 1 }).UrgencyID;
r.RequisitionForm = "test";
r.DateRequested = DateTime.Now;
//r.DateApproved = DateTime.Now;
//Create a new requisitionitem for the current requisition
RequisitionItem rqi = new RequisitionItem()
{
RequisitionID = r.RequisitionID,
StationeryID = cat.GetAllStationeries().FirstOrDefault<Stationery>().StationeryID,
QuantityRequested = 10,
QuantityIssued = 10,
Price = 5
};
//Create a new specialrequisitionitem for the current requisition
SpecialRequisitionItem spi = new SpecialRequisitionItem()
{
RequisitionID = r.RequisitionID,
SpecialStationeryID = 1,
QuantityRequested = 10,
QuantityIssued = 10,
Price = 5,
Name = "arav",
Description = "test"
};
//Add Child objects of the requisition objects
//Add requisitionitem to requisition object
r.RequisitionItems.Add(rqi);
//Add specialitem to requisition object
r.SpecialRequisitionItems.Add(spi);
//Persist requisition to database
//EF is very intelligent. It will also persist to requistionitem and specialrequistionitem
rq.CreateRequisition(r);
r = rq.GetAllRequisition().Last<Requisition>();
r.RequisitionItems.Last<RequisitionItem>().QuantityIssued = 6;
rq.UpdateRequisition(r);
spi = rq.GetAllSpecialRequisitionItems(r).Last<SpecialRequisitionItem>();
rq.DeleteSpecialRequisitionItem(spi);
//Testing databinding after creation of requisitions
if (!IsPostBack)
{
GridView1.DataSource = rq.GetAllRequisitionItems(r);
GridView1.DataBind();
if (r != null)
{
GridView2.DataSource = rq.GetAllRequisition();
GridView2.DataBind();
}
}
}
/// <summary>
/// Deprecated Method for adding a new object to the Requisitions EntitySet. Consider using the .Add method of the associated ObjectSet<T> property instead.
/// </summary>
public void AddToRequisitions(Requisition requisition)
{
base.AddObject("Requisitions", requisition);
}
/// <summary>
/// Create a new Requisition object.
/// </summary>
/// <param name="requisitionID">Initial value of the RequisitionID property.</param>
/// <param name="createdBy">Initial value of the CreatedBy property.</param>
/// <param name="departmentID">Initial value of the DepartmentID property.</param>
/// <param name="requisitionForm">Initial value of the RequisitionForm property.</param>
/// <param name="statusID">Initial value of the StatusID property.</param>
/// <param name="urgencyID">Initial value of the UrgencyID property.</param>
/// <param name="dateRequested">Initial value of the DateRequested property.</param>
public static Requisition CreateRequisition(global::System.Int32 requisitionID, global::System.Int32 createdBy, global::System.Int32 departmentID, global::System.String requisitionForm, global::System.Int32 statusID, global::System.Int32 urgencyID, global::System.DateTime dateRequested)
{
Requisition requisition = new Requisition();
requisition.RequisitionID = requisitionID;
requisition.CreatedBy = createdBy;
requisition.DepartmentID = departmentID;
requisition.RequisitionForm = requisitionForm;
requisition.StatusID = statusID;
requisition.UrgencyID = urgencyID;
requisition.DateRequested = dateRequested;
return requisition;
}
private Requisition CreateRequisition()
{
Requisition req = new Requisition();
User currentUser = Utilities.Membership.GetCurrentLoggedInUser();
req.DepartmentID = currentUser.DepartmentID;
req.DateRequested = DateTime.Now.Date;
req.CreatedBy = currentUser.UserID;
req.RequisitionForm = requisitionManager.GetRequisitionNumber(req);
return req;
}
/// <summary>
/// Get Requisition by primary key
/// </summary>
/// <param name="requisition">requisition object</param>
/// <returns>requisition object</returns>
public Requisition GetRequisitionByID(Requisition requisition)
{
try
{
return GetAllRequisition().Where(r => r.RequisitionID == requisition.RequisitionID).FirstOrDefault<Requisition>();
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// Generate the requisitionID for each requisition
/// </summary>
/// <param name="requisition"></param>
/// <returns></returns>
public string GetRequisitionNumber(Requisition requisition)
{
return requisitionDAO.GetRequisitionNumber(requisition);
}
/// <summary>
/// Reject single requisition and persist with database
/// </summary>
/// <param name="requisition">requisition object</param>
public void RejectRequisition(Requisition requisition)
{
try
{
if (ValidateRequisition(requisition, RequisitionMethod.Reject))
{
requisitionDAO.RejectRequisition(requisition);
}
else
{
ErrorMessage("Rejection of Requisition Failed");
}
}
catch (Exception)
{
throw new ApprovalException("Rejection Failed for all requisitions.");
}
}
/// <summary>
/// Update requisition and persist with database
/// </summary>
/// <param name="requisition">requisition object</param>
public void UpdateRequisition(Requisition requisition)
{
try
{
requisitionDAO.UpdateRequisition(requisition);
//bool isTrue = false;
//if (ValidateRequisition(requisition, RequisitionMethod.Update))
//{
// foreach (RequisitionItem item in requisition.RequisitionItems)
// {
// isTrue = ValidateRequisitionItem(item, RequisitionMethod.Update);
// if (!isTrue)
// {
// break;
// }
// }
// foreach (SpecialRequisitionItem splItem in requisition.SpecialRequisitionItems)
// {
// isTrue = ValidateSpecialRequisitionItem(splItem, RequisitionMethod.Update);
// if (!isTrue)
// {
// break;
// }
// }
// if (isTrue)
// {
// }
// else
// {
// ErrorMessage("Update Requisition Failed");
// }
//}
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// Update the requisition status
/// </summary>
/// <param name="requisition">requistion object</param>
/// <param name="status">status object</param>
public void UpdateRequisitionStatus(Requisition requisition, Status status)
{
try
{
requisition.StatusID = status.StatusID;
requisition.DateApproved = DateTime.Now;
}
catch (Exception)
{
throw new RequisitionException("Update failed.");
}
}
protected void Page_Load(object sender, EventArgs e)
{
requisitionManager = new RequisitionManager();
cManager = new CatalogManager();
CancelButton.Visible = false;
if (!IsPostBack)
{
UrgencyDDL.DataSource = requisitionManager.GetAllUrgencies();
UrgencyDDL.DataTextField = "Name";
UrgencyDDL.DataValueField = "UrgencyID";
DataBind();
foreach (ListItem item in UrgencyDDL.Items)
{
if (item.Text == "Normal")
{
item.Selected = true;
}
}
requisition = CreateRequisition();
Session["Requisition"] = requisition;
}
if (Session["Requisition"] != null)
{
requisition = (Requisition)Session["Requisition"];
}
string key = string.Empty;
int val = 0;
NameValueCollection nv = Request.QueryString;
if (nv.HasKeys())
{
key = nv.GetKey(0);
try
{
val = Convert.ToInt32(nv.Get(0));
}
catch (Exception)
{
}
}
if (key == "RequestID" && val > 0)
{
requisition = requisitionManager.GetRequisitionByID(val);
if (requisition != null)
{
Panel1.Visible = false;
Panel2.Visible = false;
RequestItemGridView.Columns[0].Visible = false;
RequestItemGridView.Columns[1].Visible = false;
SpecialRequestItemGridView.Columns[0].Visible = false;
Panel4.Visible = false;
SubmitButton.Visible = false;
if (requisition.Status.Name == "Pending")
{
CancelButton.Visible = true;
}
GridDataBind();
}
}
}
