Bug 121352 The data set binding property cannot be retrieved in report preview layout
In report preview page, the datasource/dataset property binding lists cannot be retrieved. The dataset binding can not work correctly in layout preview because it's value cannot get from the binding list. But in the data set edit page, the binding value can be got. You can refer to the attachment.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
protected TranslationTable translations = new TranslationTable( );
	/**
	 * The property definition list of all the referencable structure list
	 * property. Each one in the list is instance of <code>IPropertyDefn</code>
	 */
	private HashMap referencableProperties = null;
	/**
	 * Accumulates errors and warnings during a batch operation. Each one is the
	 * instance of <code>Exception</code>.
	 */
	protected List allExceptions = new ArrayList( );
	/**
	 * The validation executor. It performs the semantic validation and sends
	 * validation event to listeners.
	 */
	protected ValidationExecutor validationExecutor = new ValidationExecutor(
			this );
	/**
	 * The listener list for validation event.
	 */
	private List validationListeners = null;
	/**
	 * The file name. Null means that the module has not yet been saved to a
	 * file.
	 */
	protected String fileName = null;
	/**
	 * The system id which is needed for resolving relative URIs. It can be a
	 * relative/absolute file directory or a network path such as HTTP, FTP,
	 * etc.