Editing java Snippet node to check if column exist or create it

[mlauber71]

@tommasopalomba a pretty basic code with columnExists:

out_colExists = columnExists(v_var_column_to_check) ? 1 : 0;

will give you a flow variable that you can then further use to steer a switch or something.

Use Java Snippet to check if Column is there, fill a FlowVariable and then...