C# Custom Data Source - How to access marked selection from other table

[Gunther Doernen]

I have implemented a C# Custom Data Source for Spotfire consuming and loading data from a REST API. That works fine!

As an extension of that Custom Data Source I would like to use selected cells from another data table as input parameter (list of identifiers) for that Custom Data Source.

In seems access to a document and data table from that custom data source is not easily possible. I have not found documentation or example code for that case.

What is the best approach to implement that

I have seen CustomTool as an implementation option. Would that be the right implementation strategy, to access the selection and somehow inject the selection into the table dependend on the Custom Data Source and forcing a reload

[Magnus Rylander]

A custom data function allows for loading data from external source and to haveinput parameters from the current document (table, column, properties etc) and configure data-on-demand:

https://community.spotfire.com/wiki/create-custom-data-function-tibco-spotfire.

[Gunther Doernen]

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[Gunther Doernen]

Thanks for your reply! How can I access my custom data source from the data function

[Andreas Laestadius]

Technically you would:

 

Create a custom data function, that allows for inputs from an existing data table in spotfire

Instantiate an instance of your custom data source inside your data function, with inputs from your data function

Set the custom datasource's reader object as output to the datafunction 

 

 

 

Hope this helps,

 

Andreas