Hi SS, The use of in-memory Lucene is straightforward. It's aboout 400+ line of code even with lots of my application specific logic. It's one of the ways to index all the attributes of the loaded features for later quick search. It works fine for me so far.
Bing -------------------------------------------------- From: "Sunburned Surveyor" <sunburned.surve...@gmail.com> Sent: Tuesday, December 30, 2008 11:34 PM To: "OpenJump develop and use" <jump-pilot-devel@lists.sourceforge.net> Subject: Re: [JPP-Devel] Search tool for Attributes > Bing, > > I had no idea that you could use Lucerne for such a task. That is very > interesting. > > SS > > On Tue, Dec 30, 2008 at 7:13 AM, Larry Becker <becker.la...@gmail.com> > wrote: >> Hi Bing, >> >> Wow! That was an information-rich post. Using Lucene goes way beyond >> my >> usual minimalist approach to feature implementation. You must have some >> use >> cases with a lot of attribute data. So far, I haven't seen the need for >> indexing in my own work, and I would hate to pay the memory/time price >> for a >> tool that I would use only occasionally. >> >> Supporting the Editable and Selectable layer settings in plugins is a >> judgment call. Generally, I try to support them, but for some tools it >> makes sense to ignore the setting. In the case of a search tool, I would >> think the Selectable setting should be honored. This would be useful, >> for >> instance, when you have temporary duplicate layers that you wish to >> exclude >> from the search. >> >> I like the approach Michael took in the Simple Query plugin. Results >> can >> be displayed in the Feature Info table if selection is impractical. >> Also, I >> think that just because something is hidden due to a scale range, it >> shouldn't be exempt from selection. I'm not sure what happens with the >> selection handles though. >> >> thanks, >> Larry >> On Tue, Dec 30, 2008 at 12:24 AM, Bing Ran <bing_...@hotmail.com> wrote: >>> >>> Hi, Larry, >>> >>> I have implemented a Lucene based global attribute search for my >>> application. Features are indexed when they loaded on the layers. Search >>> results are selected and zoomed-to on the map. What is tricky is that >>> the >>> result map needs a strategy to deal with features that are labeled as >>> hidden >>> in a scale range and also those layers that are tagged as NOT >>> selectable. >>> I'm wondering if I need to make a discrimination between a manually >>> selectable layer and a programmatically selectable layer. >>> >>> Bing >>> >>> From: Larry Becker >>> Sent: Tuesday, December 30, 2008 4:12 AM >>> To: OpenJump develop and use >>> Subject: [JPP-Devel] Search tool for Attributes >>> Question: >>> >>> You can use Simple Query to search Attribute fields for specific values, >>> but have you ever wanted to do a Google style search in a map? In other >>> words, search all attributes in all layers for any occurrence of one or >>> more >>> target words. I have a tool that could be morphed into this capability >>> fairly easily, or it could be added to Simple Query. >>> >>> Any comments? >>> >>> regards, >>> Larry >>> >>> -- >>> http://amusingprogrammer.blogspot.com/ >>> >>> ________________________________ >>> >>> >>> ------------------------------------------------------------------------------ >>> >>> ________________________________ >>> >>> _______________________________________________ >>> Jump-pilot-devel mailing list >>> Jump-pilot-devel@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >>> >>> >>> ------------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> Jump-pilot-devel mailing list >>> Jump-pilot-devel@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >>> >> >> >> >> -- >> http://amusingprogrammer.blogspot.com/ >> >> ------------------------------------------------------------------------------ >> >> _______________________________________________ >> Jump-pilot-devel mailing list >> Jump-pilot-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >> >> > > ------------------------------------------------------------------------------ > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > ------------------------------------------------------------------------------ _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
