Yes. Use the SYS.Database class to create a .DAT file, Config.Databases to create a database definition (what we used to call a dataset), and Config.Namespaces to create a namespace. These are all in %SYS, so you'll need the appropriate privileges.

You should create properties for keys that you want to query. Take a look at this section in the online documentation:

https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls?KEY=GDOCDB_cos#GDOCDB_cos_createprop

Also, there is a brief description in the reference for the %DocDB.Database class:

http://localhost:52773/csp/documatic/%25CSP.Documatic.cls

For example:

USER>s db=$system.DocDB.CreateDatabase("Fitabase1")

USER>w db.%CreateProperty("TotalSteps","%Integer","$.TotalSteps")
2@%DocDB.Database

Now the ISC.DM.Fitabase1 class (or whatever your generated class is) has a TotalSteps property. If you already have data, you need to populate the associated index. A quick and dirty way to do this is an SQL query like the following:

update ISC_DM.Fitabase1 set %Doc = %Doc

I'm not that familiar with DeepSee / Analytics, but the output of %CreateDatabase() and %CreateProperty() is a standard persistent class.

I encourage you to get in touch with the WRC, but if you post more information, we might be able to make some progress. For starters, what version of Caché and Python, and what kind of errors are you seeing?

I successfully built the binding using the following:

• macOS 10.12.6 (Sierra)
• Python 2.7.10 (built-in version)
• command line tools for Xcode 8.3.3
• Cache 2017.2.1 build 801U

It looks like I got a total of eleven compiler warnings.

As described here, it's a bit tricky to actually use the binding with the system version of Python due to Apple's System Integrity Protection (SIP):

https://community.intersystems.com/post/installing-intersystems-python-binding-mac-el-capitan-1011-or-later

This may be fixable with some install_name_tool surgery, but a separate installation is recommended.

The statement in your post is not well formed. The value for the description field starts with a single quote, contains a couple of double quotes, but is not terminated with a single quote.

The two concepts are orthogonal. A class method doesn't need an instance; a private method is only visible from within the class. As a contrived example, consider a public hello() class method that calls a private greet() class method.

Is it safe to change a class method from private to public? In the immediate term, sure, but now it's a public part of the class's interface with all the maintenance responsibilities that entails. I don't see how that's obviously any different than an instance method.

What is the value of %request.ContentType?

Take a look at the WebServer setting in the portal at Configuration > Additional Settings > Startup:

http://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY=RACS_Settings#RACS_Category_Startup

This changes the WebServer entry in the [Startup] section of cache.cpf.

For the most part, dynamic objects use local memory that is accounted for by $zstorage and $storage. However, some of it comes from other heap-allocated memory, similar to long strings. You can round trip a large JSON object through a dynamic object with %FromJSON()/%ToJSON(), even if an individual field exceeds the string limit. However, it is not currently possible to get the value of such a field within Caché.

Note that you should call %ToJSON() such that it outputs to a device or writes to a stream:

USER>d o.%ToJSON(stream)

USER>d o.%ToJSON()

Otherwise, you may get a STRINGSTACK error:

USER>w o.%ToJSON()

W o.%ToJSON()
^
<STRINGSTACK>

Can you post some examples of input and expected output?

Edit: here's an example from StackOverflow that gets the same output:

USER>s (key,iv)="0123456789ABCDEF"

USER>zzdump $system.Encryption.AESCBCEncrypt("1234567890",key,iv)

0000: 60 2C AE 14 35 8D 0A C5 C9 6E 2D 46 D1 7E 58 E3

https://stackoverflow.com/questions/28592989/aes-pkcs7-padding

Are you sure that this problem is due to endian? A byte stream does not in itself have a byte order; multi-byte data structures do, such as Unicode characters encoded as UTF-16. As for the signature itself, I would expect its encoding to be specified in a portable manner.

Is it possible that line endings are getting changed?

This method probably first shipped with Caché 4.0 in December 2000, but the oldest instance I have handy is Caché 4.0.4:

USER>w $system.Version.GetMajor()
4

I don't really understand the question. It sounds like you're trying to convert from one eight-bit character set to another, but French generally uses the same character set as English, as far as I know. If you're using a Unicode instance of Caché, your first resort should be I/O translation: translate the input to Unicode, then translate on output to the desired character set. Doing it in COS is slower and less convenient.

That said, here are some things in your code that don't really make sense:

1. a."i"; should probably be a.%Get(i).
2. a-128; maybe a.%Get(c-128)?
3. I don't understand the purpose of the first loop or the return statements.
4. value(j); ...?

If I were to hazard a guess at rewriting this, my first try might be something like this:

for i=1:1:$l(str) {
    s c=$e(str,i)
    if $a(c)<128) {
        w c
    } else {
        w $c(a.%Get($a(c)-128))
    }
}

The instance is assigned a GUID that you can retrieve using the InstanceGUID() method of the %SYS.System class:

USER>w ##class(%SYS.System).InstanceGUID()
C74E6F76-F21F-11E6-9BB8-A860B607521C

Databases are not assigned such an identifier.

I can't reproduce this in a 2016.2 instance I have handy:

USER>s filename="DKA0:[QD.CACHEJCWG2.MGR.USER]CACHE.DAT"

USER>w $zf("GETFILE",filename,"UIC")                    
[1,1]

Can you get the output of $zu(56,2) after the error? Anything unusual about your filename?

The CHUI routine editor is part of the FDBMS, which hasn't been a standard part of the product for a very long time. You could try the line editor with xecute ^%, but it's kind of painful, and I think it only supports .INT routines.

I suggest using the editor of your choice with XML export files.