Bug 142893 Text key not found when library and report use different resource files
The following scenario was tested with BIRT 2.1RC2: - New library, assign resource file "r1.properties" which contains key/value-pair "k1=v1" - New label in library, set text key of label to "k1" - New report, assign resource file "r2.properties" which does not contain key/value-pair "k1=v1" - Drag and drop label from library to report body - Preview Expected result: - Report shows "v1" Actual result: - Report shows nothing. If key/value-pair "k1=v1" is added to r2.properties, than "v1" is shown.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/LabelHandle.java
*            link, hyperlink, and drill through etc.
	 * @return a handle to the action property, return <code>null</code> if
	 *         the action has not been set on the image.
	 * 
	 * @throws SemanticException
	 *             if member of the action is not valid.
	 */
	public ActionHandle setAction( Action action ) throws SemanticException
	{
		setProperty( Label.ACTION_PROP, action );
		if ( action == null )
			return null;
		return (ActionHandle) action
				.getHandle( getPropertyHandle( Label.ACTION_PROP ) );
	}
	/**
	 * Returns the help text of this label item.
	 * 
	 * @return the help text
	 */
	public String getHelpText( )
	{
		return getStringProperty( Label.HELP_TEXT_PROP );
	}
	/**
	 * Sets the help text of this label item.
	 * 
	 * @param text
	 *            the help text
	 *