Bug 140542 label can't be displayed without resource file or unmatched key
Steps to reproduce: 1.New a report, add a lable with text "aaa" 2.Add a resource file for the report, set key to "key1", value to "actuate", apply the value to the label 3.Clear the resource file in Property Editor->General->Resource File (or change the key to "abc") 4.Preview the report Expected result: 1.Display label text "aaa" on preview or 2.Give a warning message to say resource file is not found or unmatched key Actual result: Nothing displays on preview
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
import org.eclipse.birt.report.model.api.LibraryHandle;
import org.eclipse.birt.report.model.api.ModuleHandle;
import org.eclipse.birt.report.model.api.activity.SemanticException;
import org.eclipse.birt.report.model.api.core.AttributeEvent;
import org.eclipse.birt.report.model.api.core.DisposeEvent;
import org.eclipse.birt.report.model.api.core.IAttributeListener;
import org.eclipse.birt.report.model.api.core.IDisposeListener;
import org.eclipse.birt.report.model.api.core.IModuleModel;
import org.eclipse.birt.report.model.api.core.INameManager;
import org.eclipse.birt.report.model.api.elements.structures.ConfigVariable;
import org.eclipse.birt.report.model.api.elements.structures.CustomColor;
import org.eclipse.birt.report.model.api.elements.structures.EmbeddedImage;
import org.eclipse.birt.report.model.api.elements.structures.IncludedLibrary;
import org.eclipse.birt.report.model.api.elements.structures.PropertyBinding;
import org.eclipse.birt.report.model.api.metadata.IElementDefn;
import org.eclipse.birt.report.model.api.metadata.MetaDataConstants;
import org.eclipse.birt.report.model.api.util.StringUtil;
import org.eclipse.birt.report.model.api.validators.IValidationListener;
import org.eclipse.birt.report.model.api.validators.ValidationEvent;
import org.eclipse.birt.report.model.core.namespace.IModuleNameSpace;
import org.eclipse.birt.report.model.core.namespace.ModuleNameScopeFactory;
import org.eclipse.birt.report.model.elements.Library;
import org.eclipse.birt.report.model.elements.ReportDesign;
import org.eclipse.birt.report.model.elements.TemplateElement;
import org.eclipse.birt.report.model.elements.TemplateParameterDefinition;
import org.eclipse.birt.report.model.elements.Theme;
import org.eclipse.birt.report.model.elements.Translation;
import org.eclipse.birt.report.model.elements.TranslationTable;
import org.eclipse.birt.report.model.i18n.ThreadResources;
import org.eclipse.birt.report.model.metadata.ElementDefn;