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/DesignElement.java
private boolean isRootIncludedByModule( )
	{
		DesignElement tmpContainer = getRoot( );
		if ( tmpContainer instanceof Library
				&& ( (Library) tmpContainer ).getHost( ) != null )
		{
			return true;
		}
		return false;
	}
	/**
	 * Determines if the current element can contain an element with the
	 * definition of <code>elementType</code> on context containment.
	 * 
	 * @param module
	 *            the module
	 * @param slotId
	 *            the slot id
	 * @param defn
	 *            the definition of the element
	 * @return <code>true</code> if the slot can contain the an element,
	 *         otherwise <code>false</code>.
	 */
	public final boolean canContain( Module module, int slotId,
			IElementDefn defn )
	{
		assert defn != null;
		boolean retValue = canContainInRom( slotId, defn );
		if ( !retValue )
			return false;