"XSLscannerBehav.xml" Jim Fawcett Handles recursive traversal of manifests and invokes a command on each manifest encountered. scanner.htm holds the manifest file name This name identifies the root component for a scan. identifies a process that requests notification of a scan event Each subscriber is passed a reference to the current manifest during a scan. Notification provides the subscriber an opportunity to process the current manifest.

invokes subscriber's event handler scanner invokes all the subscribers who are interested in the manifests encountered while it recursively traverses a component tree CommandHandler Process XSLcommandHandler.xml

sends notification when there are no subscribers If there are no subscribers for the scan, scanner sends notification and terminates without scanning. Notification Process XSLnotification.xml

Event handling Invokes each subscriber's event handler. Invocation is activated for all current subscribers. complete traversal Visits every manifest dependent upon the root manifest, either directly or indirectly. This test defines the obligation to scan fully for extracting and building components, which is implied, but not explicit in the cited requirements. Hence the trace to derived as well. No subscribers Sends notification and returns without scanning.