Michaël, 1. It is the FeatureSchema that needs to be named as this is the only thing a Feature has reference to. 2. Yes you can have different names for two different FeatureSchema instances that share the same attribute names and types, consider say a simple data set that has road and river and all you collect is a id and name for each, they have the same schema from an attribute perspective but are different because of the type name 3. Yes you can have two schemas with the same names and different types, for example you may load a shape layer road.shp and a postgis table road that have different schema but the same name
- Geotools FeatureType has a name and a name space - Deegree FeatureType has a name - Java Class has a name - Database tables have a name Without a name features don't really have an identity. I'm not sure where the complexity lies in giving a FeatureSchema a name. Paul Michaël Michaud wrote: > Hi Paul and Larry, > > Just few questions I wonder about naming schemas : > - What really needs to be named, FeatureSchema or FeatureCollection ? > - Will it be possible to have two different names for identical schemas > (it should) ? > - Will it be possible to have two different schemas with identical name > (it should not, but may be the responsability can be let to the user to > keep it simple) ? > These are just questions to wonder before changing, but at the moment, I > can't see any drawback with a free attribute name on FeatureSchema as > proposed by Paul. > > Michaël > > Larry Becker a écrit : > > >> Hi Paul, >> >> Just a few questions regarding the FeatureSchema Name, since I'm >> unable to come up with the use case myself. I can see that it is >> simpler to look at the Name than to compare all of the attributeNames >> individually, but I would hate to make that assumption and then find >> that the user has deleted an attribute I was depending on. Also, >> would the FeatureSchema Name be persisted in the Task (.jmp) file, and >> if so how does that affect compatibility? >> >> thanks, >> Larry Becker >> >> On 6/9/07, Stefan Steiniger <[EMAIL PROTECTED]> wrote: >> >> >> >>> hei Paul, >>> >>> mhm.. if you write the function (that also supports empty names) >>> this should be possible to include if Michael and Larry agree >>> >>> stefan >>> >>> btw. although you are following specific interests, and changes to the >>> core need to be discussed it is open to you to join the jpp-team >>> >>> Paul Austin schrieb: >>> >>> >>> >>>> Martin, >>>> >>>> If the FeatureSchema class could be extended to have a name property, >>>> with a getName (and maybe a setName) with a default constructor and a >>>> constructor that takes the name as an argument then that would be great. >>>> As we have default constructor existing code won't break as the name is >>>> optional. >>>> >>>> The advantage of having the name is that if you were doing some >>>> processing of features and don't have reference to the layer you can >>>> find out what type of feature it is and do different processing >>>> accordingly. >>>> >>>> Paul >>>> >>>> Martin Davis wrote: >>>> >>>> >>>> >>>>> BTW, the idea of having hum-readable names for FeatureSchemas is a nice >>>>> one. I'd definitely support adding that functionality, even if it isn't >>>>> exposed right now. >>>>> >>>>> >>>>> >>>>> >>>> ------------------------------------------------------------------------- >>>> 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 >>>> >>>> >>>> >>>> >>>> >>> ------------------------------------------------------------------------- >>> 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 >>> >>> >>> >>> >> >> >> > > > ------------------------------------------------------------------------- > 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 > ------------------------------------------------------------------------- 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
