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/BundleHelper.java
* 
 */
class BundleHelper
{
	/**
	 * the module
	 */
	private static Module module = null;
	/**
	 * base name of the resource bundle. The name is a common base name
	 */
	private String baseName = null;
	/**
	 * Private constructor. Constructs a helper given the message folder and
	 * common base name of the message bundles.
	 * 
	 * @param module
	 *            the module
	 * @param baseName
	 *            base name of the resource bundle. The name is a common base
	 *            name
	 * 
	 */
	private BundleHelper( Module module, String baseName )
	{
		this.module = module;
		this.baseName = baseName;
	}
	/**
	 * Gets a helper to deal with a bundle of message files.