New post
AllAccepted answers
Dmitry Maslennikov · Oct 24, 2016

So let's suggest you have some object with such properties (Legs=4, Fur=True, Tail=True, Attitude=100). In a global it will looks something like this

^MyPets("Cat")=$lb(4,1,1,100)

And in this case, we should have any pointer block in anyway, and while we don't have so many data in our global, yet. Type for pointer block will be 70

Block Repair Function (Current Block 3): 44
Block # 44               Type: 70 TOP/BOTTOM POINTER
Link Block: 0            Offset: 40
Count of Nodes: 1        Collate: 5
 
--more--
 
#    Node                    POINTER
1    ^MyPets                 78

But we also have not so big value for our object, and data block can store subscripts in this block, as well as a value.

Block Repair Function (Current Block 44): 78
Block # 78               Type: 8 DATA
Link Block: 0            Offset: 60
Count of Nodes: 2        Collate: 5             Big String Nodes: 0
Pointer Length:6         Next Pointer Length:0   Diff Byte:Hex 0
Pointer Reference:      ^MyPets
Next Pointer Reference:
Next pointer stored? No
 
 
--more--
 
#    Node                    Data
1    ^MyPets
2    ^MyPets("Cat")          $lb(4,1,1,100)

Or our global could be looks a bit different

^MyPets("Cat","Attitude")=100
^MyPets("Cat","Fur")=1
^MyPets("Cat","Legs")=4
^MyPets("Cat","Tail")=1

But change nothing.

Block Repair Function (Current Block 44): 78
Block # 78               Type: 8 DATA
Link Block: 0            Offset: 108
Count of Nodes: 5        Collate: 5             Big String Nodes: 0
Pointer Length:6         Next Pointer Length:0   Diff Byte:Hex 0
Pointer Reference:      ^MyPets
Next Pointer Reference:
Next pointer stored? No
 
 
--more--
 
#    Node                    Data
1    ^MyPets
2    ^MyPets("Cat","Attitude") 100 *
3    ^MyPets("Cat","Fur")    1 *
4    ^MyPets("Cat","Legs")   4 *
5    ^MyPets("Cat","Tail")   1 *

So, we can see that yes, our subscripts now stores only in data block, yes it is, but they represent here as a nodes, and could be named as branches in a tree, we still have to store data in a data block, but we also need to store information about global, that's why we can see it here. And when will get more data than could be stored in one block, this block will be splitted, and in a parent block will see two nodes, for first nodes in a children blocks.

Dmitry Maslennikov · Oct 19, 2016

Thanks for sharing this. But some comments about code.

  • postconditionals is a very good part of our language, but here is too much, and quite difficult to read such code. In this case much better will be simple if else
  • return in try block is a bad idea, you should throw an error, which will be caught anyway
  • we can do new $namespace, but in your code, this method returns to wrong namespace, look at my previous point
  • instead of $replace(database,"/","\"), use ##class(%File).NormalizeDirectory(database), in this case you should not check on OS, even you forgot some of OS's, and in this case NormalizeDirectory/NormalizeFilename, a bit better.
  • verbose mode will be better to do with a macros, something like $$$DebugInfo("some message")
  • In your code I see so many checks on errors, and looks like, after such error we should exit, but you go further. You should look at some system macroses like $$$ThrowOnError() and so on, I think you should use it. And code will much more clear for readers
  • and at the end you have some call to method checkRW, I think you should remove it, or show this method, because it's not clear what it does

And, before publishing, please change tabs to spaces, because tabs here is too big. And width of lines should be a bit less, because read such long lines a bit difficult. 

I fixed tabs here, for more readability.

Dmitry Maslennikov · Oct 14, 2016

While it is possible to do with COS, there are so many different ways to achieve it.

Most easiest and preferable way, is to write some code on server side, and call it from batch script.

To work with users, you can use class Security.Users.

Also you can look at %Installer manifest, which has some functionality about security.

Terminal scripts, can help to automate some things. And how to run it.

And even you can read this article, about COS and Linux. It is quite simple, but as an example.

Dmitry Maslennikov · Oct 11, 2016

I'm just repeat my answer from google groups

This process names decompile, and it is quite difficult process, and may not be legal in some cases I think. 

I saw only one very old project, for version 5 or less.

And actually answer is yes, it is possible, but we don't have such tool now. To do it, you should know exactly how works compiler, and it's lots of work.

Dmitry Maslennikov · Oct 11, 2016

Your clarification does not help actually. But any way, deleting any object, leave just ID on a link, and again, everything here depends on your application. In most cases it could cause for some different issues, when application have not expected deleted object. And I would recommend to use some flag like "isDeleted", which can help to hide such objects in most of places, and still have an access to the content of this object, to show if it would be needed. Completely delete object recommended only in case when no any other objects has links to this one.