Another way to study OpenJUMP is as a set of systems that focus on a set of tasks.
For example: - The rendering system, which controls the display and appearance of spatial data in OpenJUMP. - The I/O system, which controls the input and output of spatial data. - The cursor tool system, which controls user interaction with the map (LayerViewPanel). - The plug-in management system, which allows functionality to be loaded modularly. As Larry mentioned, by checking out just a few key classes in Eclipse you can weave your way through the most important parts of the code. I use the "open call heirarchy" function in Eclipse to do this quite frequently when I am lurking around in OpenJUMP's core. Some of these key classes you can start investigating are: JUMPWorkbech WorkbenchContext PlugInManager PlugInContect LayerViewPanel RenderingManager DataSource Layer LayerManager The Sunburned Surveyor On Tue, Sep 29, 2009 at 1:31 PM, Larry Becker <becker.la...@gmail.com> wrote: > We seem to be getting a lot of requests for object models lately. IMHO, > object models do not help much in understanding how JUMP works. Eclipse > constructs these on-the-fly, after all. You would be better off studying > the event handling and threading. JUMP is best thought of as a loose > association of plug-ins that cooperate though a hierarchy of event handlers > managed by the Workbench. > > Larry > > On Tue, Sep 29, 2009 at 2:54 PM, Stefan Steiniger <sst...@geo.uzh.ch> wrote: >> >> however, if you want to stick to java then there is only geotools (as a >> library package), gvSIG and uDig .. the later maybe as difficult to >> customize but may have better documentation: >> see: >> >> http://www.spatialserver.net/osgis/ >> >> >> Sunburned Surveyor wrote: >> > I agree with Larry's comments. What you are talking about can be done, >> > but I think it would be a challenge even for some of our more >> > experienced OpenJUMP programmers. OpenJUMP is quite a beast. >> > >> > Check the developer's guide, and then ask on this mailing list if you >> > have specific questions about OpenJUMP's architecture. >> > >> > The Sunburned Surveyor >> > >> > On Tue, Sep 29, 2009 at 10:46 AM, Larry Becker <becker.la...@gmail.com> >> > wrote: >> >> The JUMP Developer Guide is the best source of design information. >> >> What you >> >> are trying to do is very difficult. It has been done, but since they >> >> were >> >> external projects, no information or source code was ever returned to >> >> the >> >> project. You might want to investigate a more appropriate toolkit like >> >> GeoTools. >> >> >> >> regards, >> >> Larry Becker >> >> >> >> On Tue, Sep 29, 2009 at 12:11 PM, Jayaram Reddi <jre...@gmail.com> >> >> wrote: >> >>> Hello all, >> >>> >> >>> I am new to OpenJump and I would like to request some help with >> >>> developing external applications using OpenJump's API. I would like to >> >>> use >> >>> the visualization and processing capabilities of OJ in my own java >> >>> application. I have spent a few hours looking through the >> >>> documentation and >> >>> wading through the mailing list archives hoping to find some leads >> >>> into >> >>> developing applications with OJ. I cam across the one sample file with >> >>> code >> >>> on how to use the layerviewpanel and load a few shapefiles into it. >> >>> From >> >>> there on its been difficult to figure out which objects do what and in >> >>> what >> >>> order or arrangement, Is there an object model diagram available? As >> >>> of now >> >>> I would like to make a simple GIS viewer that can add layers and list >> >>> them. >> >>> If i can manage that I'll try my hand at something more advanced. My >> >>> eventual goal is to integrate it with an agent based model i have >> >>> written in >> >>> java. >> >>> >> >>> Appreciate any help. >> >>> >> >>> Jayaram >> >>> >> >>> >> >>> >> >>> ------------------------------------------------------------------------------ >> >>> Come build with us! The BlackBerry® Developer Conference in SF, CA >> >>> is the only developer event you need to attend this year. Jumpstart >> >>> your >> >>> developing skills, take BlackBerry mobile applications to market and >> >>> stay >> >>> ahead of the curve. Join us from November 9-12, 2009. Register >> >>> now! >> >>> http://p.sf.net/sfu/devconf >> >>> _______________________________________________ >> >>> Jump-pilot-devel mailing list >> >>> Jump-pilot-devel@lists.sourceforge.net >> >>> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >> >>> >> >> >> >> >> >> -- >> >> Larry Becker >> >> Integrated Systems Analysts, Inc. >> >> >> >> >> >> ------------------------------------------------------------------------------ >> >> Come build with us! The BlackBerry® Developer Conference in SF, CA >> >> is the only developer event you need to attend this year. Jumpstart >> >> your >> >> developing skills, take BlackBerry mobile applications to market and >> >> stay >> >> ahead of the curve. Join us from November 9-12, 2009. Register >> >> now! >> >> http://p.sf.net/sfu/devconf >> >> _______________________________________________ >> >> Jump-pilot-devel mailing list >> >> Jump-pilot-devel@lists.sourceforge.net >> >> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >> >> >> >> >> > >> > >> > ------------------------------------------------------------------------------ >> > Come build with us! The BlackBerry® Developer Conference in SF, CA >> > is the only developer event you need to attend this year. Jumpstart your >> > developing skills, take BlackBerry mobile applications to market and >> > stay >> > ahead of the curve. Join us from November 9-12, 2009. Register >> > now! >> > http://p.sf.net/sfu/devconf >> > _______________________________________________ >> > Jump-pilot-devel mailing list >> > Jump-pilot-devel@lists.sourceforge.net >> > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >> > >> > >> >> >> ------------------------------------------------------------------------------ >> Come build with us! The BlackBerry® Developer Conference in SF, CA >> is the only developer event you need to attend this year. Jumpstart your >> developing skills, take BlackBerry mobile applications to market and stay >> ahead of the curve. Join us from November 9-12, 2009. Register >> now! >> http://p.sf.net/sfu/devconf >> _______________________________________________ >> Jump-pilot-devel mailing list >> Jump-pilot-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > > > -- > Larry Becker > Integrated Systems Analysts, Inc. > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry® Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9-12, 2009. Register now! > http://p.sf.net/sfu/devconf > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
