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
return bundleHierarchy;
		
		
		final String language = locale.getLanguage( );
		final int languageLength = language.length( );
		final String country = locale.getCountry( );
		final int countryLength = country.length( );
		if ( languageLength > 0 && countryLength > 0 )
		{
			
			StringBuffer temp = new StringBuffer( baseName );
			temp.append( "_" ); 
			temp.append( language );
			temp.append( "_" ); 
			temp.append( country );
			temp.append( ".properties" ); 
			PropertyResourceBundle bundle = populateBundle( temp.toString( ) );
			if ( bundle != null )
				bundleHierarchy.add( bundle );
		}
		if ( languageLength > 0 )
		{
			
			StringBuffer temp = new StringBuffer( baseName );
			temp.append( "_" ); 
			temp.append( language );
			temp.append( ".properties" ); 
			PropertyResourceBundle bundle = populateBundle( temp.toString( ) );
			if ( bundle != null )
				bundleHierarchy.add( bundle );