Bug 195607 NPE is thrown when calling DimensionHandle:: getAbsoluteValue()
If a DimensionHandle did not set DimensionValue, NPE will thrown when calling DimensionHandle:: getAbsoluteValue().
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DimensionHandle.java
* calculations often require context (to compute relative dimensions) and
 * knowledge of item contents to compute the sizes of items that expand to fit
 * their content.
 * <p>
 * This handle works with individual dimensions, the application-provided UA
 * uses these properties (and information about the overall report design) to
 * produce physical, absolute dimensions.
 * <p>
 * The application generally does not create dimension handles directly. It uses
 * the method in <code>DesignElementHandle</code> to get a dimension handle.
 * For example:
 * 
 * <pre>
 * 
 * DesignElementHandle elementHandle = element.handle( );
 * <p>
 * 
 * DimensionHandle dimensionHandle = elementHandle
 * 		.getDimensionProperty( Style.FONT_SIZE_PROP );
 * </pre>
 * 
 * <p>
 * The value of the dimension can be a standard format such as 1pt, 100% etc.
 * This kind of value represents a standard dimension, or it can be a CSS
 * (predefined) value such as XX-SMALL, X-SMALL. The CSS values are defined in
 * {@link org.eclipse.birt.report.model.api.elements.DesignChoiceConstants}.
 * 
 * @see org.eclipse.birt.report.model.api.elements.DesignChoiceConstants
 */
public class DimensionHandle extends ComplexValueHandle