B4J Question [ABM] Page.Refresh taking 20 seconds

Rob White · Nov 17, 2021

Hi all,

I have one page in a 20 plus page ABM web app that is too slow.

About 4 pages ago I noticed that Alain was using code like :-

Alain's code:

public Sub BuildHeader(page As ABMPage, id As String, Text As String) As ABMLabel
    Dim hdr As ABMLabel
    hdr.Initialize(page, id, Text, ABM.SIZE_H5, False, "header")
    Return hdr
End Sub

This is from ABMShared.

I extended this with code to create components for example a ABMlabel :-

Code to build a label:

Sub Process_Globals
    
End Sub

public Sub Add2Page(Pg As ABMPage,ID As String,Title As String,Size As String,CellRow As Int, CellCol As Int) As ABMLabel
    Dim L As ABMLabel
    L.Initialize(Pg,ID,Title,Size,False,"mytheme")
    Pg.Cell(CellRow,CellCol).AddComponent(L)
    Return l   
End Sub

Public Sub GetText(Pg As ABMPage,ID As String) As String
    Dim L As ABMLabel = Pg.Component(ID)
    Return L.Text
End Sub

Public Sub SetText(Pg As ABMPage,ID As String,T As String)
    Dim L As ABMLabel = Pg.Component(ID)
    L.Text = T
    L.Refresh
End Sub

Now I am not saying that this is causing the problem. I just want you guys opinion.
I really like the concept it compresses my code in ConnectPage like this :-

Part ConnectPage and:

    page.AddRows(1,True,"").AddCellsOS(1,0,0,0,12,12,4,"")
    page.AddRows(1,True,"").AddCellsOS(1,0,0,0,8,5,2,"").AddCellsOS(2,0,0,0,2,2,2,"")
    page.AddRows(1,True,"").AddCellsOS(3,0,0,0,4,4,4,"")
    page.AddRows(1,True,"").AddCellsOS(1,0,0,0,4,4,4,"").AddCellsOS(1,1,1,1,6,6,6,"")
    page.AddRows(1,True,"").AddCellsOS(1,0,0,0,12,12,12,"")
    page.AddRows(1,True,"").AddCellsOS(2,1,1,1,7,7,7,"")
    page.AddRows(1,True,"").AddCellsOS(1,0,0,0,4,4,4,"").AddCellsOS(1,1,1,1,4,4,4,"")

    page.BuildGrid 'IMPORTANT once you loaded the complete grid AND before you start adding components       
End Sub

public Sub ConnectPage()
    Dim startT As Long = DateTime.Now
    Log($"Start ConnectPage -----------------> 0"$)
    Dim labTitle As ABMLabel = ABMlab.Add2Page(page,"labtitle",Act.PageTitle1(ws),ABM.SIZE_H5,1,1)
    Dim rgAggrigation As ABMRadioGroup = ABMrg.Add2Page(page,"rgaggrigation",2,1)
    ABMrg.addItem(page,"rgaggrigation","All",False)
    ABMrg.addItem(page,"rgaggrigation","Client",False)
    ABMrg.addItem(page,"rgaggrigation","Farm",False)
    ABMrg.addItem(page,"rgaggrigation","Paddock",False)
    ABMrg.SetItem(page,"rgaggrigation",0)
    Dim cboClient As ABMCombo = ABMcbo.Add2Page(page,"cboclient","Client",3,1)
    Dim cboFarm As ABMCombo = ABMcbo.Add2Page(page,"cbofarm","Farm",3,2)
    Dim cboPaddock As ABMCombo = ABMcbo.Add2Page(page,"cbopaddock","Paddock",3,3)
    Dim cboActivity As ABMCombo = ABMcbo.Add2Page(page,"cboactivity","Activity",4,1)
    Dim butShowRpt As ABMButton = ABMbut.Add2Page(page,"butshowrpt","raised","","Show report",4,2)
    Dim edt As ABMEditor = ABMEdt.Add2Page(page,"edt",5,1)
    Dim inpEmail As ABMInput = ABMInp.Add2Page(page,"inpEmail","Email address (blank for none)",ABM.INPUT_TEXT,False,6,1)
    Dim butEmail As ABMButton = ABMbut.Add2Page(page,"butemail","raised","","Send",7,1)
    Dim butHome As ABMButton = ABMbut.Add2Page(page,"buthome","raised","","Home",7,2)

I find this allows me to better view components and layout.

Enough back ground! Here is ConnectPage complete with some log() timings :-

ConnectPage:

public Sub ConnectPage()
    Dim startT As Long = DateTime.Now
    Log($"Start ConnectPage -----------------> 0"$)
    Dim labTitle As ABMLabel = ABMlab.Add2Page(page,"labtitle",Act.PageTitle1(ws),ABM.SIZE_H5,1,1)
    Dim rgAggrigation As ABMRadioGroup = ABMrg.Add2Page(page,"rgaggrigation",2,1)
    ABMrg.addItem(page,"rgaggrigation","All",False)
    ABMrg.addItem(page,"rgaggrigation","Client",False)
    ABMrg.addItem(page,"rgaggrigation","Farm",False)
    ABMrg.addItem(page,"rgaggrigation","Paddock",False)
    ABMrg.SetItem(page,"rgaggrigation",0)
    Dim cboClient As ABMCombo = ABMcbo.Add2Page(page,"cboclient","Client",3,1)
    Dim cboFarm As ABMCombo = ABMcbo.Add2Page(page,"cbofarm","Farm",3,2)
    Dim cboPaddock As ABMCombo = ABMcbo.Add2Page(page,"cbopaddock","Paddock",3,3)
    Dim cboActivity As ABMCombo = ABMcbo.Add2Page(page,"cboactivity","Activity",4,1)
    Dim butShowRpt As ABMButton = ABMbut.Add2Page(page,"butshowrpt","raised","","Show report",4,2)
    Dim edt As ABMEditor = ABMEdt.Add2Page(page,"edt",5,1)
    Dim inpEmail As ABMInput = ABMInp.Add2Page(page,"inpEmail","Email address (blank for none)",ABM.INPUT_TEXT,False,6,1)
    Dim butEmail As ABMButton = ABMbut.Add2Page(page,"butemail","raised","","Send",7,1)
    Dim butHome As ABMButton = ABMbut.Add2Page(page,"buthome","raised","","Home",7,2)
    
    ABMcbo.Hide(page,"cboclient")
    ABMcbo.Hide(page,"cbofarm")
    ABMcbo.Hide(page,"cbopaddock")
    'ABMcbo.Hide(page,"cboactivity")
    ABMEdt.hide(page,"edt")
    ABMInp.hide(page,"inpemail")
    ABMbut.Hide(page,"butemail")
    Log($"ConnectPage B4 fill cbos -----------------> ${DateTime.Now - startT}"$)
    
    Dim Q As String = "SELECT * FROM Clients"
    ABMcbo.Fill(page,"cboclient",Main.PDsql,Q)
    Log($"ConnectPage after fill cbosclient -----------------> ${DateTime.Now - startT}"$)
    Q = "SELECT * FROM Activities WHERE ActivityReports < 99"
    ABMcbo.Fill(page,"cboactivity",Main.PDsql,Q)
    Log($"ConnectPage after fill cboactivity -----------------> ${DateTime.Now - startT}"$)
    
    ' refresh the page
    page.Refresh
    Log($"ConnectPage after refresh -----------------> ${DateTime.Now - startT}"$)
    
    ' Tell the browser we finished loading
    page.FinishedLoading
    Log($"End ConnectPage -----------------> ${DateTime.Now - startT}"$)

End Sub

and here is part of my log output :-

Partial log output:

    Key = itemid, value = FarmActRptsPage
    Key = eventparams, value = itemid
    Key = eventname, value = cboactivity_clicked
-----------------------------------------------------
ExecuteMap: SELECT DB2Count,Name FROM Activities WHERE EntryPage = 'FarmActRptsPage' ORDER BY SortOrder ASC
Going to page FarmActRptsPage
Disconnected
ExecuteListOfMaps: SELECT * FROM Clients
ExecuteListOfMaps: SELECT * FROM SeedTypes
ExecuteListOfMaps: SELECT * FROM Ferts
ExecuteListOfMaps: SELECT * FROM Cultivars
ExecuteListOfMaps: SELECT * FROM SeedSource
ExecuteListOfMaps: SELECT * FROM SowDepth
ExecuteListOfMaps: SELECT * FROM MoistConditions
ExecuteListOfMaps: SELECT * FROM CoverCond
Connected
Websocket first connection
Start ConnectPage -----------------> 0
GetAttrib pagename
ConnectPage B4 fill cbos -----------------> 6
ExecuteListOfMaps: SELECT * FROM Clients
ABMccbo.fill found 20 items
ConnectPage after fill cbosclient -----------------> 10
ExecuteListOfMaps: SELECT * FROM Activities WHERE ActivityReports < 99
ABMccbo.fill found 6 items
ConnectPage after fill cboactivity -----------------> 14
ConnectPage after refresh -----------------> 10034
End ConnectPage -----------------> 10034
FarmActRptsPage499def0f-e482-4239-8f59-aa20ddc071cf
Evt fired --->edt_loaded Number params = 3
    Key = eventparams, value = target
    Key = eventname, value = edt_loaded
    Key = target, value = edt
-----------------------------------------------------

So why is refresh.page taking 10 seconds?
Is it my code?
Anyone have an idea?

Rob

alwaysbusy · Nov 17, 2021

Have you tried commenting out some parts of your code (like the .hide() or .fill() stuff)? It may give you an indication. Also, can you show me what those methods do? I have pages that have way more components on them but have never seen this behavior.

Note that as long as the refresh is not done, no component is actually flushed to the browser. But, if you dim something in your subs (like Dim L As ABMLabel = Pg.Component(ID) ), this will actually try and find that object in the browser to get its latest value(s) hence generating unneeded traffic if it is not there yet.

Alwaysbusy

Rob White · Nov 17, 2021

Thanks,
I did some more timings and it seems to be the radio group. The rg also does not return the correct active value.
I am at the moment rewriting those parts, not using ABMrg.xxx

alwaysbusy · Nov 17, 2021

Rob White said:
the radio group

This one could indeed be having the behavior I described above of trying to get the active value each time you do a Dim in the .AddItem() method, but it does not exist in the browser yet.

Rob White · Nov 17, 2021

Thanks "AlwaysBusy",

You were smack on moved the show and hides to after page.FinishedLoading and problem is gone.

Thanks again.

Rob White

B4J Question [ABM] Page.Refresh taking 20 seconds

Rob White

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Rob White

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Rob White

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B4J Question [ABM] Page.Refresh taking 20 seconds

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