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
*/
	public boolean isManagedByNameSpace( )
	{
		if ( getContainer( ) == null )
			return false;
		return getContainer( ).isManagedByNameSpace( getContainerSlot( ) );
	}
	/**
	 * Determines if the current element can be transformed to a template
	 * element. False will be returned if the element can not be dropped or the
	 * container of the current element can not contain the template element.
	 * 
	 * @param module
	 *            the root module of the element
	 * 
	 * @return true if it can be transformed, otherwise false.
	 */
	public boolean canTransformToTemplate( Module module )
	{
		if ( ( !canDrop( ) ) || ( isContainTamplateElement( ) ) )
			return false;
		IElementDefn templateReportItem = MetaDataDictionary.getInstance( )
				.getElement( ReportDesignConstants.TEMPLATE_REPORT_ITEM );
		IElementDefn templateDataSet = MetaDataDictionary.getInstance( )
				.getElement( ReportDesignConstants.TEMPLATE_DATA_SET );
		if ( getContainer( ) != null )
			return getContainer( ).canContain( module, getContainerSlot( ),
					templateReportItem )
					|| getContainer( ).canContain( module, getContainerSlot( ),
							templateDataSet );