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javaknime

KNIME custom node output format

Is it possible to set the output format of my custom node to any object i created inside my node? or are there restrictions?

Solution

  • Your output should implement PortObject, and also have a PortObjectSerializer and PortObjectSpec (also with PortObjectSpecSerializer). You need to register that with an extension point, just like this. After that, you can use them.

    I would recommend using existing port objects though. For example PMMLPortObject might be a good alternative if you need tree-like data structures, BufferedDataTable for tabular data, and the ImagePortObject for images. You might consider creating special cell types and store them in regular BufferedDataTables.