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 the default units used in the design
	 */
	public String getUnits( )
	{
		if ( !StringUtil.isBlank( units ) )
			return units;
		return (String) getPropertyDefn( ReportDesign.UNITS_PROP ).getDefault( );
	}
	/**
	 * Gets a list containing all the include scripts.
	 * 
	 * @return a list containing all the include scripts. Return
	 *         <code>null</code> if there were no scripts defined.
	 */
	public List getIncludeScripts( )
	{
		return (ArrayList) getLocalProperty( this, INCLUDE_SCRIPTS_PROP );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.core.DesignElement#getIntrinsicProperty(java.lang.String)
	 */
	protected Object getIntrinsicProperty( String propName )
	{
		if ( UNITS_PROP.equals( propName ) )
		{
			return units;
		}
		else if ( THEME_PROP.equals( propName ) )