PythonAdapter

Python adapter via callout for InterSystems Data Platforms.

Installation

1. Load ObjectScript code.
2. Place callout DLL in bin folder.
3. Check that your PYTHONHOME environment variable points to Python 3.6.
4. Check that your SYSTEM PATH environment variable has PYTHONHOME variable (or directory it points to).

Use

1. Call: do ##class(isc.py.Callout).Setup() once per systems start (add to ZSTART!)
2. Call: do ##class(isc.py.Callout).Initialize() once per process
3. Call main method (can be called many times, context persists): write ##class(isc.py.Callout).SimpleString(code, data)
4. Call: do ##class(isc.py.Callout).Finalize() to free Python context
5. Call: write ##class(isc.py.Callout).Unload() to free callout library

do ##class(isc.py.Callout).Setup() 
do ##class(isc.py.Callout).Initialize()
write ##class(isc.py.Callout).SimpleString("x='ПРИВЕТ'","x")
write ##class(isc.py.Callout).SimpleString("x=repr('ПРИВЕТ')","x")
write ##class(isc.py.Callout).SimpleString("x=123","x")
do ##class(isc.py.Callout).Finalize()
write ##class(isc.py.Callout).Unload()

Test Business Process

Along with callout code and Interoperability adapter there's also a test Interoperability Production and test Business Process. To use them:

1. In OS bash execute python -m pip install pyodbc pandas matplotlib seaborn.
2. Execute: do ##class(isc.py.test.CannibalizationData).Import() to populate test data.
3. Create ODBC connection to the namespace with data
4. In test Business Process isc.py.test.Process edit annotation for Correlation Matrix: Tabular call, specifying correct ODBC DSN in line 3
5. Edit annotation for Correlation Matrix: Graph call, specifying valid filepath for f.savefig function.
6. Save and compile business process.
7. Start isc.py.test.Production production.
8. Send empty Ens.Request mesage to the isc.py.test.Process.

Development

Development of ObjectScript is done via cache-tort-git in UDL mode. Development of C code is done in Eclipse.