swt - TableViewer update value of column when value in another column has changed -

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i have table 2 columns both combobox columns. when user selects value in column 1, want update options available in combobox column 2.

how do this?

update values in data model , call tableviewer.update(object, null) object data model object row (that value content provider returns row). update call cause tableviewer ask content provider values row again.


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