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/command/ContentRecord.java
*            Whether to add or remove the item.
	 */
	public ContentRecord( Module module, DesignElement containerObj,
			int theSlot, DesignElement contentObj, boolean isAdd )
	{
		init( containerObj, theSlot, contentObj, -1, isAdd );
		this.module = module;
		assert module != null;
	}
	/**
	 * Constructs the record for adding with container element, slot id, content
	 * element, and position in container.
	 * 
	 * @param module
	 *            the module in which this record executes
	 * @param containerObj
	 *            The container element.
	 * @param theSlot
	 *            The slotID in which to put the content.
	 * @param contentObj
	 *            The content object to add or remove.
	 * @param newPos
	 *            The position index where to insert the content.
	 */
	public ContentRecord( Module module, DesignElement containerObj,
			int theSlot, DesignElement contentObj, int newPos )
	{
		init( containerObj, theSlot, contentObj, newPos, true );
		this.module = module;
		assert module != null;