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Robert Cemper · Apr 9, 2019 go to post

instead of 

do %code.WriteLine($c(9) _ "Quit ..Test()")

use

do %code.WriteLine($c(9) _ "Quit zTest()")

It worked for me best

Robert Cemper · Apr 9, 2019 go to post

OK.
StorageTo../..ToStorage only works in persistent classes where you move content from/to globals.
No chance without storage. 

It doesn't get called in Registered Classes and not when the object wasn't saved.
see my test with %Persistent

set obj=##class(Test.String).%New()
write obj.prop    ;nothing loaded yet
set obj.prop=77 write obj.prop   ; unchanged as neither stored nor loaded
77
do obj.%Save(),obj,%Reload() ; force reload to trigger StorageToLogical
write obj.prop  ; and here we go
prop


This proves that there is limited use of the approach.

Robert Cemper · Apr 8, 2019 go to post

I could imagine inheriting standard data types for a customized data type and then 

adding methods LogicalToStorage and StorageToLogical  similar as LogicalToObs, ....
So your manipulations happen on the way from Global to the local variable.

Additional Parameters eventually may control the generated code.

It's just a vague idea.

Robert Cemper · Apr 8, 2019 go to post

Ken Olson , the founder of DEC (Digital Equipment Corp.) was  famous for its statement:

  • "I can't imagine any good reason for someone to have a computer at his home"

 Similar in the late 1950ies IBM estimated the worldwide market for computers of 15..30 systems in total.

So lack of phantasy what could be in the future is quite common also for very successful people and companies.

Robert Cemper · Apr 6, 2019 go to post

inside &SQL() only SQL compatible code is allowed
so $ZDT($H,3,1,3) is not known in SQL

you may do

set %myts=$ZDT($H,3,1,3), %tx=tx
&sql(SELECT {fn TIMESTAMPDIFF(SQL_TSI_HOUR,:%myts,:%tx)})

mind the colon :%myts and :%tx to pass global  accessible variables to embedded SQL

Robert Cemper · Apr 1, 2019 go to post

you better not change   %CSP.Login but make a personal copy and change this

404 = HTTP page not found. Most likely you put your copy to the wrong directory or namespace   

And then you have to put the reference in MgmtPortal Security-> WebApplications as Login page:
Again with the correct namespace and the correct directory.

Robert Cemper · Mar 26, 2019 go to post

can't import %routines which I need. 

Without any special mapping, %routines are stored in SYSLIB. (except %z*,%Z*)

Mount SYSLIB (default: read-only) as Read/Write and you can load your %routines. 

Needless to mention that you better not overwrite already existing %routines.
The effects could be unpredictable.

Robert Cemper · Mar 26, 2019 go to post

As you describe it I'd create a nice BAT file that you execute.
It coud be static or created ad hoc just by writing it from Caché

And then execute it using $ZF(-1...) ,$zf(-2....) or CPIPE 

Though Caché has powerful utilities around %File class you will be faster that way

[based on ~40 yrs of M]

Robert Cemper · Mar 21, 2019 go to post

to create your own Login Page you best start with  Class  %CSP.Login and adapt it to your specific needs.

defaulting to

and then you add the new Login Page to Security-> WebApplications

Robert Cemper · Mar 16, 2019 go to post

Size of WIJ is in Relation to Global   Buffers. With equal size of G.Buf. you should get similar size  of WIJ

Robert Cemper · Mar 11, 2019 go to post

that's wrong !  "will execute nothing, "   

if condition

Sets the system variable $TEST.   
And this was and still is a widely used way of signaling between routines and functions.
And millions lines of existing code rely on its proper use.

I come back to an earlier comment: Really learning the language is definitely an advantage.

Robert Cemper · Mar 11, 2019 go to post

returning to dotted subroutines would be really bad. Though they are still around in %SYS.  laugh

on the other hand, the flexibility of the language allows a broad range of personal styles.
knowing them enabled me in the past (amongst my customers ) to identify the author of a routine
just by his style with a hit rate of >75%.  devil

Robert Cemper · Mar 11, 2019 go to post

OK Vitaly !

It happens under cover  (from: ^%SYS.SECURITY1.int) 

Set $zt="SSLConfigError"
i '($e($roles,1,$l("%All"))="%All") { n $ET,$roles s $ET="",$roles=$roles_","_"%All"}
  n $namespace
Do $zu(5,"%SYS")
 
Robert Cemper · Mar 11, 2019 go to post

Alexej,

if you don't care about maintenance effort the most exact pointer is preferable.

As you may see from Ensemble the number of entries in the mapping table is of no importance.
With modern hardware, saving memory is of no importance anymore.

Robert Cemper · Mar 10, 2019 go to post

I remember times when new programmers learned from their masters to use no matter what
programming language in her full beauty and elegance with all its features.
no matter if this was Assembler/360 or Macro32 or C, C++, C# or Bliss or PL/1 or Fortran, Algol, .... [list almost unlimitted]

All of them had their tricks and open and hidden features that inspired the creativity of developers
and allowed them to create artwork instead of stereotypic formulated phrases. By this approach,
developers get degraded from architects to monotone brick assemblers.

"users unfamiliar with the language" 
I'd recommend they should learn it to understand it before touching it.
If I want to read the Правда  I have to learn Cyrillic characters and the Russian language to understand it.
Nobody would accept any request for Latin letters.

Robert Cemper · Mar 10, 2019 go to post

Hmmm,
it seems to prefer "waste screen space" style 
over "have all on 1 screen with no scrolling"   [my favorite ]

Robert Cemper · Mar 8, 2019 go to post

Hi Tim

write $d(^|"%SYS"|SYS("Security","SSLConfigsD",<my config> ),settings)

provided you have access rights

Cheers, Robert

Robert Cemper · Mar 4, 2019 go to post

You have to set your DB to be in Primary MIRROR before the copy.
Otherwise, you may miss some kind of "Mirror-Marker" / Timestamp. 

I hit this trap also on my first trials.

Robert Cemper · Mar 2, 2019 go to post

I just realized that this method doesn't check the existence of the ID.

therefore:

write:##class(Abstract.Class).%ExistsId(id) $li(##class(Abstract.Class).%ComposeOid(id),2)

or any equivalent construct.

Robert Cemper · Mar 2, 2019 go to post

OID contains the class name. So this should do it.

write $li(##class(Abstract.Class).%ComposeOid(id),2)

Robert Cemper · Mar 2, 2019 go to post

You are totally right.

With Parent-Child your data are not only logical but also physically tied to each other.

One-to-many allows you more flexible handling of Relations.

Just one out of many examples   M:N Relationship

Robert Cemper · Mar 1, 2019 go to post

Exactly 4 weeks before UK is leaving the European Union on Friday, March 29th this sounds like kind of British humor to me.