As an example of what I was saying: under WMSLayer
SIDLayer extends WMSLayer and provides access to local MRSID raster files - implemented in SkyJUMP and OpenJUMP. Larry On 6/13/07, Larry Becker <[EMAIL PROTECTED]> wrote: > Hi Paul, > > Great! I think this is a useful list. I would extend it to show > columns of JUMP forks (JUMP, OpenJump, SkyJUMP, Kosmo, Pirol Jump, > deeJUMP, SIGLE JUMP, etc.) with an "x" showing which forks have > implemented which model concepts. In this way, OpenJump development > can best benefit from pioneering work already done, and perhaps avoid > problems already solved (or not solved). > > regards, > Larry Becker > > On 6/13/07, Paul Austin <[EMAIL PROTECTED]> wrote: > > A comment that SS made regarding Layers vs. FeatureSchema objects made > > me think that we probably need a Wiki page where we can define the > > concepts and purpose of these concepts within OpenJUMP before we start > > changing around anything to do with the feature model, schema etc. So > > I've put together a list below of some of these concepts and my > > understanding of these. These are quick notes and would need to be word > > smithed. > > > > User Facing concepts: > > > > Project - A user defined grouping of data that they wish to work on for > > a specific task. > > Category - Visual Grouping of layerables in a Project > > Layerable - A visual item that can be displayed on the Projects viewport > > Layer - A vector based Layerable used to render Feature instances using > > Style objects > > Style - A way of changing the rendering of a feature, Color, width. > > pattern, text, line decorations > > LayerTheme - Currently this is a ColorThemingStyle that will render > > features using different style based on attributes of a feature. The > > theme also displays additional names under the layer. I think this > > concept needs to be extended to allow different types of themes and to > > have show/hide for the themes. Maybe a Layerable.getThemes() that would > > return a collection of LayerableTheme objects rather than the current > > approach which hard codes the ColorThemingStyle > > WMSLayer - A raster based Layerable loaded from a WFS Server > > > > Internal Concepts: > > > > Feature - An in memory representation of user's data, which can have > > geometry and attribution. Question: can we use the Feature concept for > > data without geometry or should Feature be a subtype of a DataObject > > interface that has the same interface but without the Geometry methods. > > FeatureSchema - Provides the names and types of the attributes on a Schema > > > > DataStore - A connection to a store of feature and attribute only data. > > Examples would be File, ZipFile, Postgis database connection, Oracle > > database connection. A DataStore can contain many data sets. > > DataSource - A connection typically to a source of data that contains a > > single type of feature for example a Shape file > > ConnectionManager - Saved list of previous database connections > > > > I'm sure I missed a whole bunch of concepts but this should be enough to > > start discussion. > > > > Paul > > > > > > ------------------------------------------------------------------------- > > This SF.net email is sponsored by DB2 Express > > Download DB2 Express C - the FREE version of DB2 express and take > > control of your XML. No limits. Just data. Click to get it now. > > http://sourceforge.net/powerbar/db2/ > > _______________________________________________ > > Jump-pilot-devel mailing list > > Jump-pilot-devel@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > > > > -- > http://amusingprogrammer.blogspot.com/ > -- http://amusingprogrammer.blogspot.com/ ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
