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
/**
	 * Finds a shared style in this module itself.
	 * 
	 * @param name
	 *            Name of the style to find.
	 * @return The style, or null if the style is not found.
	 */
	public StyleElement findNativeStyle( String name )
	{
		return (StyleElement) nameSpaces[STYLE_NAME_SPACE].getElement( name );
	}
	/**
	 * Finds a shared style in this module and its included modules.
	 * 
	 * @param name
	 *            Name of the style to find.
	 * @return The style, or null if the style is not found.
	 */
	public StyleElement findStyle( String name )
	{
		ElementRefValue refValue = moduleNameSpaces[STYLE_NAME_SPACE].resolve(
				name, null );
		return (StyleElement) refValue.getElement( );
	}
	/**
	 * Finds a named report item in this module and the included modules. This
	 * is for body elements in the element's name space.
	 * 
	 * @param name
	 *            The name of the element to find.