Bug 149922 Image builder - URI and file source type are treated as same
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ImageHandle.java
throws SemanticException
	{
		try
		{
			module.getActivityStack( ).startTrans( );
			setProperty( ImageItem.SOURCE_PROP, source );
			setProperty( ImageItem.URI_PROP, prop );
		}
		catch ( SemanticException e )
		{
			module.getActivityStack( ).rollback( );
			throw e;
		}
		module.getActivityStack( ).commit( );
	}
	/**
	 * Sets the image scale property. The scale factor for the image given as a
	 * percentage. The default is 100%.
	 * 
	 * @param scale
	 *            the scale value to be set.
	 * @throws SemanticException
	 *             if the property is locked.
	 */
	public void setScale( double scale ) throws SemanticException
	{
		setFloatProperty( ImageItem.SCALE_PROP, scale );
	}
	/**
	 * Sets the image size property. The input value is one of the followings