I've just downloaded the Maple 2020 trial version and I have zero experience on Maple programming. My problem is: when I do simple calculations such as 3+5 or 2*3, the result displays on the screen but, for other functions such as
factor(x^2+2x+1);
or assigning variables can't be done:
n:= 5;
m:=7;
m+n;
I do not see any results on the display screen after the enter.
Where am I doing wrong?
It seems like, I need to change some configurations of the Maple. After doing some search online, I found these suggestions in a web site. I have applied the following steps and my problem is solved: (Remember to apply globally not for the session.)
Open a new blank worksheet
On the toolbar, access Tools->Options.
Select the 'Display' tab
Ensure that the first entry is set to 'Maple Notation', and the second entry is set to '2-D Math Notation'
Click 'Apply to session' at the bottom left
On the toolbar, access Tools->Options again
Select the 'Interface' tab
Ensure that the entry 'Default format for new worksheet' is set to 'Worksheet'
Click 'Apply to session' at the bottom left
Now open a new worksheet in the same session. There should be a prompt '>'.
At the prompt, type 'version();' without the single quotes, but with the trailing semi-colon. This ought to return details of the precise Maple version you are running. If it returns something like
User Interface: 1133417
Kernel: 1133417
Library: 1133417
(precise numbers may be different), then you ought to be good to go - so try something simple like 1+1; at the next command prompt, (remember the semicolon).
Related
Disclaimer: new to SSIS and Active Directory
I have a need to extract all users within a particular Active Directory (AD) domain and import them into Excel. I have followed this: https://www.itnota.com/query-ldap-in-visual-studio-ssis/ in order to create my SSIS package. My SQL is:
LDAP://DC=JOHN,DC=JANE,DC=DOE;(&(objectCategory=person)(objectClass=user)(name=a*));Name,sAMAccountName
As you know there is a 1,000 row limit when pulling from the AD. In my SQL I currently have (name=a*) to test the process and it works. I need to know how to setup a loop with variables to pull all records and import into Excel (or whatever you experts recommend). Also, how do I know what the other field names are that are available to pull?
Thanks in advance.
How do I see what's in Active Directory
Tool recommendations are off topic for the site but a tool that you can download, no install required, is AD Explorer It's a MS tool that allows you to view your domain. Highly recommend people that need to see what's in AD use something like this as it shows you your basic structure.
What's my domain controller?
Start -> Command Prompt
Type set | find /i "userdnsdomain" and look for USERDNSDOMAIN and put that value in the connect dialog and I save it because I don't want to enter this every time.
Search/Find and then look yourself up. Here I'm going to find my account by using my sAMAccountName
The search results show only one user but there could have been multiples since I did a contains relationship.
Double clicking the value in the bottom results section causes the under pane window to update with the details of the search result.
This is nice because while the right side shows all the properties associated to my account, it's also updated the left pane to navigate to the CN. In my case it's CN=Users but again, it could be something else in your specific environment.
You might discover an interesting categorization for your particular domain. At a very large client, I discovered that my target users were all under a CN
(Canonical Name, I think) so I could use that in my AD query.
There are things you'll see here that you sure would like to bring into a data flow but you won't be able to. Like the memberOf that's a complex type and there's no equivalent in the data flow data types for it. I think Integer8 is also something that didn't work.
Loop the loop
The "trick" here is that we'll need to take advantage of the
The name of the AD provider has changed since I last looked at this. In VS 2017, I see the OLE DB Provider name as "OLE DB Provider for Microsoft Directory Service"
Put in your query and you should get results back. Let that happen so the metadata is set.
An ADO.NET source does not support parameterization as the OLE DB does. However, you can apply an Expression on the Data Flow which surfaces the component and that's what we'll do.
Click out of the Data Flow and back into the Control Flow and right click on the Data Flow and select Properties. In that properties window, find Expressions and click the ellipses ... Up pops the Property Expressions Editor
Find the ADO.NET source under Property and in the Expressions section, click the Ellipses.
Here, we'll use your same source query just to prove we're doing the right things
"LDAP://DC=JOHN,DC=JANE,DC=DOE;(&(objectCategory=person)(objectClass=user)(name=" + "a" + "*));Name,sAMAccountName"
We're doing string building here so the problem we're left to solve is how we can substitute something for the "a" in the above query.
The laziest route would be to
Create an SSIS variable of type String called CurrentLetter and initialize it to a
Update the expression we just created to be "LDAP://DC=JOHN,DC=JANE,DC=DOE;(&(objectCategory=person)(objectClass=user)(name=" + #[USer::CurrentLetter] + "*));Name,sAMAccountName"
Add a Foreach Loop Container (FELC) to your Control Flow.
Configure the FELC with an enumerator of "Foreach Item Enumerator"
Click the Columns...
Click Add (this results in Column 0 with data type String) so click OK
Fill the collection with each letter of the alphabet
In the Variable Mappings tab, assign Variable User::CurrentLetter to Index 0
Click OK
Old blog posts on the matter because I like clicks
https://billfellows.blogspot.com/2011/04/active-directory-ssis-data-source.html
http://billfellows.blogspot.com/2013/11/biml-active-directory-ssis-data-source.html
I am kind of new to VBA programming in Access and I have banged upon strange thing. I have system of myListbox (multi-choice, two of them in testing regime, planning 5 total) to filter myReport contained in subform container by selected items in those listboxes.
Switching "On" filter works kind of fine (I will address it in different question after doing some research first), but switching filter off turned out to be problem. I was getting error message described here.
Managed to find a workaround. Since I have myReport bound to control in parent form, I am not switch off filter, instead I am changing it to resemble the bound field criteria, after that switch it off.
Code:
Forms![myForm]![myReport].Report.Filter = "((sourceQuery.fieldForBoundControl)=Forms![myForm]![boundControl])"
Me.FilterOn = False
but if I try this:
Forms![myForm]![myReport].Report.Filter = "((sourceQuery.fieldForBoundControl)=Forms![myForm]![boundControl])"
Forms![myForm]![myReport].Report.FilterOn = False
...or any other combination, or simply turning it off, I get error messages and procedure termination. Why?
Is my solution correct for future working of the app or I my setting myself for another Access trap?
TL;DR: A data flow task "works" when the package runs, but I am unable to view the query when clicking "preview" in the Data flow Source Assistant.
My working theory is that somehow the Source Assistant is unable to get the value of the parameter when previewing. I tried to resolve this problem by use of (iterations) "Parameter" and "Variable" without success. The example shown below use "Parameter".
In an SSIS Data Flow task, I have a Source Assistant with "SQL Command" as its data access mode.
SELECT h.Campus,
h.StudentName,
h.StudentId,
h.EntryDate
FROM dbo.RwsBaseEnrollmentHistory h
WHERE h.Campus = ?;
The question mark indicates a parameter, which I have defined in "Parameters".
In the OLE DB Source Editor, I made sure to map the variable to the parameter.
When I click "Preview" I get an error:
The data in question cannot be shared, but trust me when I say that when I run the package, the query works as intended. It's the inability to preview the query that I'd like to be able to fix.
What do I need to do so that I can preview the query without having to hard-code the parameter value?
I stumbled into a possible answer. It appears to work so far and I haven't been able to break it. If there is a better way of doing this I would love feedback.
This is my resolution:
Create a variable to hold the desired query (like shown in the example above). In this example, I name it EnrollmentHistory.
In the "Expression", click the [...] button and paste the query. Be sure that double-quotes surround the query.
"SELECT
h.Campus,
h.StudentName,
h.StudentId,
h.EntryDate
FROM dbo.RwsBaseEnrollmentHistory h
WHERE h.Campus = '" + # [User::Campus] + "'"
Press the "Evaluate Expression" button and press OK.
Go back to your Source Assistant and select "SQL Command from Variable" as the Data Access Mode and the Variable you just defined (in this case EnrollmentHistory) as the Variable name. You will see that the parameter is correctly resolved in the Variable Value.
I recently started a new job with a company and my first task is to update some quite old software for them.
There is a big back story but basically the software was written in PB8 (around 1997) and no one within the company (including me) has had any experience with PowerBuilder before and as the newbie I have been tasked to update and maintain it until a replacement has been approved and can be developed.
We have the license for PowerBuilder 12.5 so I am using PB12.5 Classic to do everything. The original developer cannot be contacted for support and no documentation exists.
One thing I am trying to understand, that will be a huge help in the future, is how to determine where functions are defined and where variables get their values..
The example I am working on at the moment is the following scenario.
There is a data window with tabs, named tab_detail each tab displays different whatever little orange men are in the tree list.
One of these are called dw_detail which allows pasting of data. None of the other tabs allow pasting of data, but I would like them to. dw_detail has an event rbuttondown() with the following code in it:
Window w_parentwin
If ib_add_mode Or ib_chg_mode Then
w_parentwin = Parent.GetParent().GetParent()
m_dwpaste m_pop_paste
m_pop_paste = CREATE m_dwpaste
m_pop_paste.idw_data = This
If ii_agent_code > 0 And Not IsNull(id_period) And Clipboard() <> "" Then
m_pop_paste.m_popup.m_paste.Enabled = TRUE
Else
m_pop_paste.m_popup.m_paste.Enabled = FALSE
End If
m_pop_paste.m_popup.PopMenu(w_parentwin.PointerX(), w_parentwin.PointerY())
DESTROY(m_pop_paste)
End If
When I add that code to the rbuttondown() event of tab number 2 (dw_adjustment) tab 2 now allows paste when I right click within the dw_adjustment data window but the data gets pasted to the fields within the dw_detail tab not the fields on the dw_adjustment tab.
I have tried debugging and stepping through the code but there are thousands of values in the variable window and without the ability to search I cannot find the variables used above and what their values are or why data gets pasted to the dw_detail tab instead of the dw_adjustment tab when I paste into the dw_adjustment tab.
Basically I am looking for any helpful tips on where to look or what the above is doing and why everything pastes to tab 1 instead of the tab I clicked paste in.
If more detail is needed from code from a different location or more information is needed I am happy to provide it.
As suggested by Seki I found the m_popup when double clicked it came up with wf_pastereturn():
Integer li_idx, li_rows, li_dwrows, li_comm, li_seqno
String ls_approval_type
If tab_detail.tabpage_details.dw_detail.RowCount() > 0 Then
li_idx = 1
li_dwrows = tab_detail.tabpage_details.dw_detail.RowCount()
Do Until li_idx > li_dwrows
ls_approval_type = tab_detail.tabpage_details.dw_detail.Object.approval_type [li_idx]
If IsNull(ls_approval_type) or ls_approval_type = "" Then
tab_detail.tabpage_details.dw_detail.DeleteRow(li_idx)
Else
li_idx++
End If
li_dwrows = tab_detail.tabpage_details.dw_detail.RowCount()
Loop
End If
If li_dwrows > 0 Then
li_seqno = Long(tab_detail.tabpage_details.dw_detail.Object.seq_no [li_dwrows])
End If
li_seqno += 10
If Clipboard() <> "" Then
If tab_detail.tabpage_details.dw_detail.ImportClipboard(1, li_rows, 1, 4, 3) <= 0 Then
MessageBox("Invalid Data", "Unable to paste!", StopSign!)
Return -1
End If
li_rows = tab_detail.tabpage_details.dw_detail.RowCount()
li_dwrows++
For li_idx = li_dwrows To li_rows
tab_detail.tabpage_details.dw_detail.Object.approval_type [li_idx] = trim(tab_detail.tabpage_details.dw_detail.Object.approval_type [li_idx])
tab_detail.tabpage_details.dw_detail.Object.approval_no [li_idx] = trim(tab_detail.tabpage_details.dw_detail.Object.approval_no [li_idx])
tab_detail.tabpage_details.dw_detail.Object.agent_code [li_idx] = ii_agent_code
tab_detail.tabpage_details.dw_detail.Object.period [li_idx] = id_period
li_comm = f_new_commission(Long(tab_detail.tabpage_details.dw_detail.Object.value_of_work[li_idx]), id_period)
tab_detail.tabpage_details.dw_detail.Object.levy_payable[li_idx]= &
inv_rate.of_CalculateLevyPayable (Long(tab_detail.tabpage_details.dw_detail.Object.value_of_work[li_idx]), id_period)
tab_detail.tabpage_details.dw_detail.Object.comm_deductable [li_idx] = li_comm
tab_detail.tabpage_details.dw_detail.Object.commission [li_idx] = li_comm
tab_detail.tabpage_details.dw_detail.Object.seq_no [li_idx] = li_seqno
li_seqno += 10
tab_detail.tabpage_details.dw_detail.Object.agent_return_detail_create_date[li_idx] = Today()
tab_detail.tabpage_details.dw_detail.Object.agent_return_detail_create_user[li_idx] = SQLCA.Logid
Next
Clipboard("")
Return 0
Else
Return -1
End If
I modified the function to use the windows SelectedTab property. Data will now paste into the tab but in the wrong input fields. I looked further and the data columns for the ImportClipboard function do not line up.
How is the best way to change the order of the selected database columns?
Here is a screenshot of what I mean by tabs:
So within the main program window, there are the above tabs, within each tab (where the input fields are) there is a data window labelled with the dw_ prefix.
Thanks heaps for your help.
I think first you should do some short tutorials. Please check out these:
PowerBuilder Classic 12/12.5 guide/tutorials
These are short and useful.
On the other side you are able to select specific variables in your own "watch variable" list, so you do not have to search over the several variables. You can right click on the variable name and do a Quickwatch or you can Insert the variable name in the Watch window.
Br. Gábor
The action with a contextual menu is in 2 times :
handle the mouse right click to display a contextual menu
perform an action among the one or several actions provided by the popup menu
You shown the pbscript that is displaying the menu with PopMenu() if there is something in the clipboard (Clipboard() <> "") and maybe you did not noticed that the pasting action is somewhere else.
Look in m_popup: there must be some code inside that may be hard-coded to paste in dw_detail. If so, maybe that you could store in the window instance variables a reference to the currently processed dw for the contextual menu.
Something like :
datawindow idw_current in the instance variables
then in the rbuttondown() event idw_current = this (this being the datawindow the rbuttondown() event belongs to)
and finally in the menu reuse the id_current instead of a hardcoded dw_detail
Concerning your question about where the variables are modified: what you can do is searching the variables by their name (right click on the target or a single pbl or object then 'search'), and put a breakpoint on the lines where they are affected. If you run in debug mode (CtrlDCtrlT instead of CtrlR) you will be able to trace when a variable is modified.
Paste Problem
Pass 1
It's hard to tell for sure, but I'd look at the code of m_dwpaste.m_popup.m_paste.Clicked. The worse case scenario is that dw_detail is hard coded into that script; the slightly better case is that it has a more flexible routine in there, but somehow dw_adjustment doesn't fit into that algorithm.
Pass 2
With the new information, we can see that the code of wf_pastereturn() (I'm not sure how you got to this script, but this looks like the culprit) is not simply pasting, but doing a lot more that involves specific fields. In fact, it's not just pasting, it's importing the data, which means that it's assuming the contents of the clipboard are not only in a specific format, but match the data set of the DataWindow (see the Columns pane in the DW painter, and be careful not to confuse the data set part of the DataWindow with the UI part). The question is, do you want:
"Pasting" like copying text from Notepad into a browser form; just putting text into the current field?
"Pasting" exactly like the other DataWindow, including assumptions that all the same columns mentioned in the script are in both DataWindows?
"Pasting" something like this script, but customized for the data set in the new DataWindow?
These all require somewhat different solutions, combined with the differences I asked about in my comment about tabs vs. DataWindows.
Finding Stuff
I'm going to give an unapologetically biased point of view, because I'm the author of a tool that, among other things, helps you search PowerBuilder code called PBL Peeper.
If you're looking at code in the Browse tab, and you want to see other mentions of the variable, you can select it, right click, and either
search forward or back within the script
search for the object name in the tree on the left (it'll make more sense when you see it)
search either the rest of the object or the rest of the application
Finding where a variable is assigned is more difficult than it sounds, because of the multiple syntaxes that could be involved.
// assigns a value on instantiation
int i = 1
// assigns a value when executed
i = 1
// does not assign a value
IF i = 1 THEN
// assigns a value possibly if the parameter is passed by reference (kind of like a pointer to the variable)
f_foo (i)
Finding the setting of a variable can be helped by understanding variable scope. If the variable is local, you only need to search the script. If the scope is instance or shared, you need to search the object (as above, pretty easy) and its descendants (easy to go to a given descendant with an RMB on the treeview, harder to search on a set of descendants). If the scope is global, you want to search the entire app.
Finding where a selected function is declared is possible, but you need to know a little secret (or RTFM). The Find on the RMB menu uses the parameters from the Find page, so you need to set Portion Type to All, not just Scripts, to find where functions are declared. Alternatively, you can use the Lists / Scripts pages and find the script using the functions on that page (Find, QuickFind, Filter, etc...).
The tool has a plethora of functionalities that let you find, filter and sift through code to get at what you're after. The above is just a quick introduction.
Good luck,
Terry.
I currently deployed an SSIS package (Developed on the 2005 version) (developed on my local server) in a pre production environment for testing. I have used the Row count transform to get a count of good/bad records. It works fine on my local system . However when i deploy this on the pre prod server, the row count does not work! (as in it does not recognize the vairbales i have assigned to the relevant transofm - no drop down abvaliable in the variables attribute part. tried deleting and adding a new transoform.. no luck.
Strangely this does not work for any of the other packages also present/deployed on the same server (tried this out by dropping an rc tramsform onto an existing package... same problem)
Any suggestions?
Thanks a tonne
If you are having problem with the row count transform, another alternative that we use here at my company is creating a script component and incrementing a rowcnt variable by one. The performance is just as good-just add this code:
Public Overrides Sub PostExecute()
MyBase.PostExecute()
Me.Variables.rowcnt = Me.Variables.rowcnt + 1
End Sub
This certainly seems odd. Are you saying that when you are in the Advanced Editor for Row Count, under Custom Properties, that the drop down beside VariableName has no options? You should at least see all of the System:: variables.
If the User:: variables are not listed, my first suspicion is that they do not have the correct scope to be visible in the Data Flow Task where you have your RowCount.
When you go up to the Control Flow, and get the Variables list, do you see your user variable there? What is the scope of it?
Note that I recognize that none of this fits with "it works locally but doesn't work when copied to the server", but it is at least where I would start...