Bug 119550 Default Value of Named Expression can't be saved in design file
New a report, set named expression in the report property editor add a named expression and set the default value add a report item, say table, to the layout set the named expression of the report item add a named expression and set hte default value save the report close the report and reopen, and there is no default named expression value displayed. open report design file with a text editor, there is no default value associate with the named expression
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/core/UserPropertyDefn.java
import java.util.List;
import org.eclipse.birt.report.model.api.command.UserPropertyException;
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.IObjectDefn;
import org.eclipse.birt.report.model.api.metadata.IStructureDefn;
import org.eclipse.birt.report.model.api.metadata.PropertyValueException;
import org.eclipse.birt.report.model.api.metadata.UserChoice;
import org.eclipse.birt.report.model.api.util.StringUtil;
import org.eclipse.birt.report.model.core.DesignElement;
import org.eclipse.birt.report.model.core.Module;
import org.eclipse.birt.report.model.metadata.ChoiceSet;
import org.eclipse.birt.report.model.metadata.ElementPropertyDefn;
import org.eclipse.birt.report.model.metadata.MetaDataDictionary;
import org.eclipse.birt.report.model.metadata.MetaDataException;
import org.eclipse.birt.report.model.metadata.MethodInfo;
import org.eclipse.birt.report.model.metadata.PropertyDefn;
import org.eclipse.birt.report.model.metadata.PropertyType;
/**
 * Represents a user-defined property. User-defined properties are created by
 * the user and reside on elements. If element E has a user-defined property,
 * and element C extends E, then element C also has all the user-defined
 * properties defined on element E.
 * <p>
 * The user property definition implements the <code>IStructure</code>
 * interface so that it can be accessed generically, and changes can be done
 * though the command mechanism to allow undo/redo of style changes.
 * 
 */
public final class UserPropertyDefn extends ElementPropertyDefn