Monday, November 08, 2010 at 12:05 AM.

---

system.verbs.builtins.rootUpdates.getPendingUpdatesList

on getPendingUpdatesList (adrUpdatesTable, rssUrl, databasesToUpdate) {
	<<Changes
		<<8/5/04; 11:09:35 PM by JES
			<<Change initial whenLastUpdatesRead date to 8/4/04.
		<<12/17/03; 1:34:37 AM by JES
			<<Created. Read the RSS fead that lists pending root updates.
	local (flRead = false);
	if not defined (adrUpdatesTable^) {
		new (tableType, adrUpdatesTable)};
	if not defined (adrUpdatesTable^.pendingUpdates) {
		new (tableType, @adrUpdatesTable^.pendingUpdates)};
	if not defined (adrUpdatesTable^.whenLastUpdatesRead) {
		adrUpdatesTable^.whenLastUpdatesRead = date.set (4, 8, 2004, 0, 0, 0)};
	if adrUpdatesTable^.whenLastUpdatesRead < date.yesterday (clock.now ()) { //read up to once every 24 hours
		flRead = true};
	if flRead { //read the feature list RSS feed, and populate the pendingUpdates table
		adrUpdatesTable^.whenLastUpdatesRead = clock.now ();
		bundle { //read the updates into the pendingUpdates table
			local (services); new (tableType, @services); //a spoofed temporary services table
			new (tableType, @services.[rssUrl]);
			on storyArrivedCallback (adrservice, adrstory) {
				adrUpdatesTable^.pendingUpdates.[nameOf (adrstory^)] = adrstory^};
			new (tableType, @adrUpdatesTable^.pendingUpdates);
			bundle { //read the RSS feed using xml.rss.readService
				xml.rss.readService (rssUrl, @services, "http://frontier.userland.com/howToUpdate?hash=" + string.hashmd5 (user.prefs.serialNumber), @storyArrivedCallback, true)}}};
	bundle { //delete any updates that we already have
		local (db, lastUpdate);
		for db in databasesToUpdate { //get lowest update date -- lowest common denominator
			try {
				local (adrprefs = @user.rootUpdates.servers.[db]);
				if typeOf (lastUpdate) == unknownType {
					lastUpdate = date (adrprefs^.lastUpdate)}
				else {
					if date (adrprefs^.lastUpdate) < lastUpdate {
						lastUpdate = date (adrprefs^.lastUpdate)}}}};
		local (ctupdates = sizeOf (adrUpdatesTable^.pendingUpdates), i);
		for i = ctupdates downto 1 { //delete updates before lastUpdate
			local (adr = @adrUpdatesTable^.pendingUpdates[i]);
			if date (adr^.data.pubDate) < lastUpdate {
				delete (adr)}}};
	return (sizeOf (adrUpdatesTable^.pendingUpdates))}

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This listing is for code that runs in the OPML Editor environment. I created these listings because I wanted the search engines to index it, so that when I want to look up something in my codebase I don't have to use the much slower search functionality in my object database. Dave Winer.