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
return Collections.EMPTY_LIST;
		List allLibraries = new ArrayList( );
		allLibraries.addAll( getLibraries( ) );
		Iterator iter = getLibraries( ).iterator( );
		while ( iter.hasNext( ) )
		{
			Library library = (Library) iter.next( );
			allLibraries.addAll( library.getAllLibraries( ) );
		}
		return allLibraries;
	}
	/**
	 * Returns only libraries this module includes directly.
	 * 
	 * @return list of libraries.
	 */
	public List getLibraries( )
	{
		if ( libraries != null )
			return new ArrayList( libraries );
		return Collections.EMPTY_LIST;
	}
	/**
	 * Inserts the library to the given position.
	 * 
	 * @param library
	 *            the library to insert
	 * @param posn
	 *            at which the given library is inserted.
	 */