Bug 212497 Need api to get all referencable report item with cube
Need model provide new api to return all referencable report items for dataset or cube respectively. For instance: getAvailableDataSetBindingReferenceList(); getAvailableCubeBindingReferenceList(); also keep current api: getAvailableDataBindingReferenceList().
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ReportItemHandle.java
{
			ModuleHandle moduleHandle = handle.getRoot( );
			String valueToSet = handle.getElement( ).getFullName( );
			if ( moduleHandle instanceof LibraryHandle )
			{
				String namespace = ( (LibraryHandle) moduleHandle )
						.getNamespace( );
				valueToSet = StringUtil.buildQualifiedReference( namespace,
						valueToSet );
			}
			setStringProperty( DATA_SET_PROP, valueToSet );
		}
	}
	/**
	 * Returns the cube of the report item.
	 * 
	 * @return the handle to the cube
	 */
	public CubeHandle getCube( )
	{
		DesignElement cube = ( (ReportItem) getElement( ) )
				.getCubeElement( module );
		if ( cube == null )
			return null;
		assert cube instanceof Cube;
		return (CubeHandle) cube.getHandle( cube.getRoot( ) );
	}
	/**
	 * Sets the cube of the report item.
	 *