Bug 132103 No objects under Context in palette when scripting a data set
Steps to reproduce: 1.New a data set and select it 2.Swith to script view, choose "onFetch" and open palette Expected result: Objects:this, row and reportContext should be given under Context And other objects available for other methods(e.g. BeforeOpen) should be there as well. Actual result: Nothing under Context The relative bug is #126110
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
*            the handle of the element
	 * @return Returns the list of data sets which can be used for this element
	 */
	public static List getDataSetList( DesignElementHandle handle )
	{
		List dataSetList = new ArrayList( );
		if ( handle instanceof ReportElementHandle )
		{
			if ( handle instanceof ReportItemHandle )
			{
				DesignElementHandle dataSet = ( (ReportItemHandle) handle )
						.getDataSet( );
				if ( dataSet != null && !dataSetList.contains( dataSet ) )
				{
					dataSetList.add( dataSet );
				}
			}
			for ( Iterator itor = getDataSetList( handle.getContainer( ) )
					.iterator( ); itor.hasNext( ); )
			{
				DesignElementHandle dataSet = (DesignElementHandle) itor.next( );
				if ( !dataSetList.contains( dataSet ) )
				{
					dataSetList.add( dataSet );
				}
			}
		}
		return dataSetList;
	}
	/**