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
updateReferenceableClients( (Library) libraries.get( i ) );
		}
	}
	/**
	 * Updates the theme/style element reference which refers to the given
	 * library.
	 * 
	 * @param library
	 *            the library whose element references are updated.
	 */
	public void updateReferenceableClients( Library library )
	{
		updateReferenceableClients( library, ILibraryModel.THEMES_SLOT );
		
		List images = library.getListProperty( library, Module.IMAGES_PROP );
		if ( images == null || images.isEmpty( ) )
			return;
		boolean sendEvent = false;
		for ( int i = 0; i < images.size( ); i++ )
		{
			EmbeddedImage image = (EmbeddedImage) images.get( i );
			List clients = image.getClientStructures( );
			if ( clients == null || clients.isEmpty( ) )
				continue;
			for ( int j = 0; j < clients.size( ); j++ )
			{
				Structure client = (Structure) clients.get( j );
				StructRefValue value = (StructRefValue) client
						.getLocalProperty( this,
								ReferencableStructure.LIB_REFERENCE_MEMBER );