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
/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/
package org.eclipse.birt.report.model.api;
import org.eclipse.birt.report.model.api.activity.SemanticException;
import org.eclipse.birt.report.model.api.metadata.DimensionValue;
import org.eclipse.birt.report.model.api.metadata.IChoice;
import org.eclipse.birt.report.model.api.metadata.IChoiceSet;
import org.eclipse.birt.report.model.api.metadata.IPropertyType;
import org.eclipse.birt.report.model.api.util.StringUtil;
import org.eclipse.birt.report.model.core.MemberRef;
import org.eclipse.birt.report.model.elements.interfaces.IStyleModel;
import org.eclipse.birt.report.model.metadata.DimensionPropertyType;
import org.eclipse.birt.report.model.metadata.ElementPropertyDefn;
/**
 * Simplifies working with dimension properties. A dimension property consists
 * of a measure and a dimension. This handle helps assemble and disassemble
 * dimension property values. The dimension property itself can be either a
 * top-level element property, or the member of a property structure.
 * <p>
 * Note that this handle cannot translate a dimension property into a physical
 * dimension. BIRT uses the CSS dimension system and requires a CSS User Agent
 * (UA) to compute the physical layout of a report given a report design. These