Bug 202254 Exception is thrown when category values are null and type of X axis is set to DateTime
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/data/util/DataAdapterFactory.java
* when inheritance will catch all the cases anyway. <!-- end-user-doc -->
	 * @return the new adapter.
	 * @see org.eclipse.birt.chart.model.data.NumberDataElement
	 * @generated
	 */
	public Adapter createNumberDataElementAdapter( )
	{
		return null;
	}
	/**
	 * Creates a new adapter for an object of class '{@link org.eclipse.birt.chart.model.data.NumberDataSet <em>Number Data Set</em>}'.
	 * <!-- begin-user-doc --> This
	 * default implementation returns null so that we can easily ignore cases; it's useful to ignore a case when
	 * inheritance will catch all the cases anyway. <!-- end-user-doc -->
	 * @return the new adapter.
	 * @see org.eclipse.birt.chart.model.data.NumberDataSet
	 * @generated
	 */
	public Adapter createNumberDataSetAdapter( )
	{
		return null;
	}
	/**
	 * Creates a new adapter for an object of class '
	 * {@link org.eclipse.birt.chart.model.data.OrthogonalSampleData <em>Orthogonal Sample Data</em>}'. <!--
	 * begin-user-doc --> This default implementation returns null so that we can easily ignore cases; it's useful to
	 * ignore a case when inheritance will catch all the cases anyway. <!-- end-user-doc -->
	 * 
	 * @return the new adapter.
	 * @see org.eclipse.birt.chart.model.data.OrthogonalSampleData