DataCell with Custom Object

jonathans · October 28, 2022, 9:08am

Let’s say I ve created a User class. I know there are CellTypes for the basic Datatypes. But do can I “hand over” the User Object?

gab1one · October 31, 2022, 4:11pm

Hi @jonathans,

Do you want to create a custom DataCell type for your user defined object?
You can do so by extending the “org.knime.core.DataType” extension point.
Take for example the knime-json extension that provides a custom Json cell type

github.com

knime/knime-json/blob/master/org.knime.json/plugin.xml#L69-L75


      
          <extension point="org.knime.core.DataType">
             <DataType cellClass="org.knime.core.data.json.JSONCell" factoryClass="org.knime.core.data.json.JSONCellFactory">
                <serializer cellClass="org.knime.core.data.json.JSONCell" serializerClass="org.knime.core.data.json.JSONCell$JSONSerializer">
                </serializer>
                <serializer cellClass="org.knime.core.data.json.JSONBlobCell" serializerClass="org.knime.core.data.json.JSONBlobCell$JSONSerializer">
                </serializer>
             </DataType>

best,
Gabriel

jonathans · November 2, 2022, 7:08am

This helped a lot thank you