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
}
		return false;
	}
	/**
	 * Finds the property binding defined in this module, which has the same
	 * property name with the given property name and has the same element id of
	 * the given element.
	 * 
	 * @param element
	 *            the element to find
	 * @param propName
	 *            the property name to find
	 * @return the matched property binding defined in the module, otherwise
	 *         null
	 */
	public PropertyBinding findPropertyBinding( DesignElement element,
			String propName )
	{
		
		if ( element == null || propName == null )
			return null;
		
		
		if ( element.getPropertyDefn( propName ) == null )
			return null;
		
		
		List propertyBindings = getListProperty( this, PROPERTY_BINDINGS_PROP );
		if ( propertyBindings == null )
			return null;