Bug 145991 [Regression]Invalid data set should not be allowed to drag or "Insert in layout"
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DataSetHandle.java
implements
			IDataSetModel,
			ISimpleDataSetModel
{
	/**
	 * Constructs a data set handle with the given design and element. The
	 * application generally does not create handles directly. Instead, it uses
	 * one of the navigation methods available on other element handles.
	 * 
	 * @param module
	 *            the module
	 * @param element
	 *            the model representation of the element
	 */
	public DataSetHandle( Module module, DesignElement element )
	{
		super( module, element );
	}
	/**
	 * Returns a handle to the data source for this data set.
	 * 
	 * @return handle to the data source, or <code>null</code> if the data
	 *         source is not set or is undefined.
	 */
	public DataSourceHandle getDataSource( )
	{
		return (DataSourceHandle) getElementProperty( SimpleDataSet.DATA_SOURCE_PROP );
	}
	/**
	 * Returns the name of the data source for this data set.