mappingLabel.setLayoutData(data);
// mapping field table viewer
mappingTblViewer = new TableViewer(comp, SWT.FULL_SELECTION);
mappingTblViewer.setContentProvider(new MappingContentProvider());
mappingTblViewer.setLabelProvider(new MappingLabelProvider());
// Set up the mapping table
Table mappingTable = mappingTblViewer.getTable();
data = new GridData(GridData.FILL_HORIZONTAL);
data.heightHint = 200;