code: private void cboDataSetActionPerformed(java.awt.event.ActionEvent evt) {// GEN-FIRST:event_cboDataSetActionPerformed
  		txtQueryEditor.setText(EMPTY_TEXT); // clear the text editor
  		JComboBox cb = (JComboBox) evt.getSource();
  		if (cb.getSelectedIndex() != -1) {
  			RelationDefinition dd = (RelationDefinition) cb.getSelectedItem();
  			if (dd != null) {
  				String sql = generateSQLString(dd);
  				txtQueryEditor.setText(sql);
  			}
  			executeQuery();
  			txtClassUriTemplate.requestFocus();
  		}
  	}
docs: </editor-fold>//GEN-END:initComponents