Extend IBM InfoSphere Data Architect to meet your specific data modeling and integration requirements, Part 1: Modifying IDA models and customizing properties

public void createControls(Composite parent, TabbedPropertySheetPage page) {
		super.createControls(parent, page);
		TabbedPropertySheetWidgetFactory factory = getWidgetFactory();
		Composite comp = factory.createFlatFormComposite(parent);
		// Privacy checkbox
		privacyCheckbox = factory.createButton(comp, "Private Data", SWT.CHECK);
		FormData data = new FormData();
		data.left = new FormAttachment(0, 0);
		data.top = new FormAttachment(0, ITabbedPropertyConstants.VSPACE);
		privacyCheckbox.setLayoutData(data);
		privacyCheckbox.addSelectionListener(new SelectionListener() {
			public void widgetSelected(SelectionEvent evt) {
				Sample1PropertySection.this.onCheckboxSelected();
			}
			public void widgetDefaultSelected(SelectionEvent evt) {
				
			}
		});
		// Masking text
		CLabel label = factory.createCLabel(comp, "Masking method:");
		data = new FormData();
		data.left = new FormAttachment(0, 0);
		data.top = new FormAttachment(privacyCheckbox, 
				ITabbedPropertyConstants.HSPACE);
		label.setLayoutData(data);
		
		maskingText = factory.createText(comp, "");
		data = new FormData();
		data.left = new FormAttachment(label, ITabbedPropertyConstants.HSPACE);
		data.right = new FormAttachment(100, 0);
		data.top = new FormAttachment(label, 0, SWT.CENTER);
		maskingText.setLayoutData(data);
		textListener = new TextChangeListener() {
			protected void changeProperty(Event e) { 
				Sample1PropertySection.this.onLeaveText(); }
		};
		maskingText.addListener(SWT.FocusOut, textListener);
		maskingText.addListener(SWT.DefaultSelection, textListener);
	}
	
	public void setInput(IWorkbenchPart part, ISelection selection) {
		super.setInput(part, selection);
		
		if(!(selection instanceof IStructuredSelection))
			return;
		Object firstObject = ((IStructuredSelection) selection).getFirstElement();
		if(firstObject instanceof Column) {
			column = (Column)firstObject;
			refresh();
		}
		else {
			column = null;
		}
	}
	
	public void refresh() 
	{
		super.refresh();	
		// read the property value
		if(column != null) {
			privacyCheckbox.setSelection(getPrivacyProperty());
			maskingText.setText(getMaskingProperty());
		}
	}
	
	private void onCheckboxSelected() {
		// save the property value
		boolean checkboxSelected = privacyCheckbox.getSelection();
		boolean propertyStatus = this.getPrivacyProperty();
		if(checkboxSelected != propertyStatus) {
			setPrivacyProperty(checkboxSelected);
		}
	}
	
	private void onLeaveText() {
		// save the property value
		String newText = this.maskingText.getText();
		String oldText = this.getMaskingProperty();
		if(!newText.equals(oldText)) {
			setMaskingProperty(newText);
		}
	}
	
	private String getMaskingProperty() {
		String maskingStr = "";
		EAnnotation ea = column.getEAnnotation(SAMPLE_EANNOTAITN_NAME);
		if(ea != null) {
			// get the details with the key SAMPLE_MASKING_PROPERTY_NAME
			Object valObj = ea.getDetails().get(SAMPLE_MASKING_PROPERTY_NAME);
			if(valObj != null) {				
				maskingStr = (String)valObj;
				if(maskingStr != null)
					return maskingStr;
			}
		}
		return "";
	}
	
	private void setMaskingProperty(String maskingStr) {
		EAnnotation ea = column.getEAnnotation(SAMPLE_EANNOTAITN_NAME);
		DataToolsCompositeCommand cmd = 
			new DataToolsCompositeCommand(COMMAND_LABEL);
		String newText = this.maskingText.getText();
		if(ea == null) {
			ea = createSampleEAnnotaiton(cmd);
		}
		EMap details = ea.getDetails();
		int entryCount = details.size();
		EStringToStringMapEntryImpl entry = null;
		for(int i=0; i < entryCount; i++) {
			EStringToStringMapEntryImpl anEntry = 
				(EStringToStringMapEntryImpl)ea.getDetails().get(i);
			if(anEntry.getKey().equals(SAMPLE_MASKING_PROPERTY_NAME)) {
				entry = anEntry;	
				break;
			}
		}
		if(entry != null) {
			EStructuralFeature feature = 
				EcorePackage.eINSTANCE.getEStringToStringMapEntry_Value();
			cmd.compose(
				new SetCommand(COMMAND_LABEL, entry, feature, newText));
			DataToolsPlugin.getDefault().getCommandManager().execute(cmd);
		}
	}