Load custom function will result: Rserve error: Object reference not set to an instance of an object.

[sirpod]

Hello,

when I trying to load/add a custom function in the plugin the plugin return on every call:
"WARN|SSEtoRserve.RServeEvaluator|Rserve error: Object reference not set to an instance of an object."

I setup function definition file
<setting name="functionDefinitionsFile" serializeAs="String"> <value>.\FuncDefs.json</value> <!-- Set to i.e. .\FuncDefs.json to add your own defined SSE functions. The file contains the description of the functions. --> </setting>

This works with default functions as well with new ones created by me in the JSON-file.

But I have a complex script what I do not want do define in a JSON-file.
Therefore I saved the script in a R-file and saved it to the machine.
When I now trying to load this on start up of the plugin:

<setting name="rserveInitScript" serializeAs="String"> <value>source("FUNCTION.R")</value> </setting>

Any request (R.ScriptAggrExStr | R.ConcatStringsTensor | or others) I send to the plugin returns the same error.

First I though I had an error in my function but even when I setup a simple function the same error occurs.
e.g.
myFunction <- function(inputData) { return('done') }

Operating system where the SSE plugin is deployed

[x] Windows
[ ] Linux

Qlik Sense

[ ] Desktop
[x] Server

Versions

• sse-r-plugin: v1.2.1
• Qlik Sense: QlikSense June 2018
• Operating system: Windows Server 2012 R2

Thanks & regards
Tobias

[sirpod]

I tested further and found out that in the JSON-file it works if you add semicolon after each command:
myFunction <- function(inputData) { return('done'); };

But in the "rserveInitScript" it dosen't work at all
Seams like a BUG to me.

Please confirm.

Thanks & regards

[tobiaslindulf]

The rserveInitScript is a bit picky and it requires the last statement to actually return something. the function source() does not actually return something so that is the reason why it fails.
So try to add getwd(); after source, like: source("sum.R"); getwd();
or to be even more explicit also set the wd to something like: setwd('C:/Users/myUser/Documents/R/Myscripts'); source("sum.R"); getwd();

This should work for you.

[sirpod]

Thanks for the help!
Now it works.

But I still have a problem with encoding.
The plugin interprets the UTF-8 characters as native.
The option
options(encoding = 'UTF-8');
returns an error in the plugin when executed on startup or gets ignored when setup in my function.

Any idea what this could be about?

Thanks & regards
Tobias