[sldev] [PATCH] Land Sales filter to mainland only (kludge warning)

[Bo Brinkman]

lol. Great! Thanks!

OBR (Sheepishly)


>From: kelly at lindenlab.com
>To: sldev at lists.secondlife.com
>Subject: Re: [sldev] [PATCH] Land Sales filter to mainland only (kludge 
>warning)
>Date: Mon, 15 Jan 2007 13:29:51 -0800 (PST)
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>
>Searching for land for sale will change in a couple of ways with the next
>release.
>* There will be pages.  Only 100 results returned at a time.
>* The 'for sale' option in the drop down is split into two options.  One
>for private estates and one for mainland.
>* The filters on parcel size and price will be done server side
>
>These changes are already on beta (have been for a couple weeks at least),
>although there is hardly enough land for sale on beta to really play with
>it I think.
>
>  - Kelly
>
> > Hi everyone. This is my first post on the list, so please forgive me if
> > this
> > is an area that has already been covered.
> >
> > As a first experiment into enhancing the viewer, I have modified the 
>land
> > sales tab to filter out island parcels. Since parcels on private islands
> > can
> > be reclaimed by the estate owner, these are not really "sales" but
> > rentals.
> >
> > It turns out that the data that comes back to the land sales panel does
> > not
> > have sufficient information to do such filtering. To augment this I take
> > each parcel_id returned to the land sales panel, and request its parcel
> > info. Items can only pass the filter if
> > 1) Their global x, y and z positions have been cached from a
> > parcelInfoReply
> > 2) The x,y posiont of the parcel falls in a mainland sim.
> >
> > This means that you should do your search, wait a while (1-2 minutes) 
>and
> > then re-run the search. The first time you do a search, the parcel won't
> > pass the filter because its info won't be cached. In some ways this bug 
>is
> > kindof nice because it will make this patch less useful for land 
>swoopers.
> > :)
> >
> > I would consider this patch to be on the level of "god-awful hack." 
>Rather
> > than generating even *more* messages to try to get estate information 
>from
> > the regions (estate info does not come back from the parcel query!) I 
>have
> > hard-coded some information about which sims are mainland sims.
> >
> > Anyway, please feel free to dissect this. I would not recommend that it 
>be
> > included in your day-to-day client, but if you are just looking to buy a
> > piece of land, it should be just what you need.
> >
> > I think that the Lindens need to do something on the server side to get 
>us
> > actually usable land sales searches. Ideally the DirLandReply would
> > contain
> > (in addition to what it already has)
> > - estate ID
> > - terrain type
> > What other kinds of information do you want to be able to filter your
> > searches by?
> >
> > I would guess that the Lindens have some better long term plan for
> > searches.
> > In particular, the DirLandQuery message looks like this:
> >
> > {
> > 	DirLandQuery Low NotTrusted Zerocoded
> > 	{
> > 		AgentData			Single
> > 		{	AgentID			LLUUID	}
> > 		{	SessionID		LLUUID	}
> > 	}
> > 	{
> > 		QueryData			Single
> > 		{	QueryID			LLUUID	}
> > 		{	QueryFlags		U32		}
> > 		{	ForSale			BOOL	}
> > 		{	Auction			BOOL	}
> > 		{	ReservedNewbie	BOOL	}
> > 	}
> > }
> >
> > So you can see from this that no meaningful filtering is done on the
> > server
> > ... every time you do a search you get back ALL parcels that are 
>currently
> > for sale. The backend version of the message is just as bad. It would be
> > nice if the filter parameters would be passed down to the data server, 
>and
> > filtering done in the database query itself. I would expect this to
> > decrease
> > load, but ... what do I know? ;)
> >
> > OBR
> >
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