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
}
				return null;
			}
		}
		return null;
	}
	/**
	 * Get a DesignElementHandle's method's all arguments.
	 * 
	 * @param handle
	 * @param methodName
	 * @return Arguments map, key is argument name, value is argument type.
	 */
	public static Map getDesignElementMethodArguments(
			DesignElementHandle handle, String methodName )
	{
		List methods;
		if ( handle instanceof DataSetHandle )
		{
			methods = DesignEngine.getMetaDataDictionary( )
					.getElement( ReportDesignConstants.DATA_SET_ELEMENT ) 
					.getMethods( );
		}
		else if ( handle instanceof DataSourceHandle )
		{
			methods = DesignEngine.getMetaDataDictionary( )
					.getElement( ReportDesignConstants.DATA_SOURCE_ELEMENT ) 
					.getMethods( );
		}
		else