Right, but this makes the LGPL as well, the difference is that you are allowed to let proprietary code _use_ it ..
I found some conversation with gnu.org in my thesis about this matter. You'll find it from page 96 on .. http://soldin.de/about/2003-diplom/mobigis_wl_small.pdf May this clarifies things a even better. And a correction: It is of course _not_ possible to dual license your code if it is derived from GPL code. Only the solely copyright holder with a free choice of licensing (not using GPLed components) can multilicense the work. Regards ede -- On Fri, 22 Jun 2007 10:31:16 -0700, "Sunburned Surveyor" <[EMAIL PROTECTED]> wrote: > This conversation has been great and has really helped me understand > the difference between the GPL and LGPL licenses. > > I imagine that an important distinction between JUMP and GeoTools/UDig > is the fact that JUMP is released under the GPL and can't be > "sucked-in" by proprietary software. > > The Sunburned Surveyor > > On 6/22/07, Larry Becker <[EMAIL PROTECTED]> wrote: >> Right. It is the dependency that matters. JUMP depends on JTS. JTS >> doesn't depend on JUMP. >> >> And lawyers aren't always a bad thing. Some might say that the threat >> of layers is the only thing that keeps GPL code free. I might release >> some code under "Larry's license" but it would not be backed up by the >> threat of the Free Software Foundation suing you for violating the >> license. >> >> regards, >> Larry Becker >> >> >> On 6/22/07, Edgar Soldin <[EMAIL PROTECTED]> wrote: >> > Simple.. as jump is derived from jts and jts LGPL does not enforce a >> > type of license for the derived work... this is what makes it the > Lesser >> > GPL.. it declares the use of libraries to "/work that uses the > Library/" >> > and excepts it from the derivation rule. see >> > >> > http://en.wikipedia.org/wiki/LGPL >> > >> > ede >> > > So how is it JTS can be released under the LGPL is JUMP uses it? >> > > Doesn't JUMP's GPL infect JTS? >> > > >> > > Or is JTS released under both the GPL and LGPL? Or does releasing > JTS >> > > under the LGPL meet the "viral" requirement of the GPL? >> > > >> > > The Sunburned Surveyor >> > > >> > > On 6/22/07, Edgar Soldin <[EMAIL PROTECTED]> wrote: >> > > >> > >> Hello all, >> > >> >> > >> unfortunately separating the code is not enough too allow a new > license. >> > >> At a quick glance i only found only this >> > >> >> > >> > http://www.fsf.org/licensing/licenses/gpl-faq.html#TOCLinkingOverControlledInterface >> > >> >> > >> And to my knowledge the GPL enforces itself on derived work (incl. >> > >> inheritance, use of interfaces). Thats why any work based on GPLed >> > >> software has to be at least licensed for GPL. Dual licensing of the > same >> > >> is still allowed though. >> > >> >> > >> Regards ede >> > >> -- >> > >> >> > >>> Sunburned Surveyor wrote: >> > >>> >> > >>> >> > >>>> Martin, >> > >>>> >> > >>>> Thanks for this great clarification. I believe in my particular > case I >> > >>>> will have to release the converter code under the GPL, since I > will be >> > >>>> linking directly to JUMP code to do the conversion. >> > >>>> >> > >>>> I'll have to consider how important it is to use GPL for other > code I >> > >>>> write that isn't tied as directly to JUMP. I'd appreciate any > thoughts >> > >>>> on this. Does code released under the GPL discourage use and > adoption >> > >>>> in a way that code released under the LGPL does not? >> > >>>> >> > >>>> >> > >>> yes.. do it under LGPL if you can (i.e. don't rely on GPL code). >> > >>> what i have done (though i am still not sure if it is truly > correct) is >> > >>> to release the mapgentoolbox code under an apache like license. >> > >>> But the important thing has been that i have put my code in > separate >> > >>> *.jars and not in the jar that contains the jump-extension class > stuff. >> > >>> I think that having two jars is the way. >> > >>> >> > >>> stefan >> > >>> >> > >>> >> > >>> >> > >>>> The Sunburned Surveyor >> > >>>> >> > >>>> On 6/21/07, Martin Davis <[EMAIL PROTECTED]> wrote: >> > >>>> >> > >>>> >> > >>>> >> > >>>> >> > >>>>> I don't think you can develop code that links in GPL code under > anything >> > >>>>> except GPL. See here: >> > >>>>> >> > >>>>> http://www.gnu.org/copyleft/gpl-faq.html#GPLAndPlugins >> > >>>>> >> > >>>>> LGPL is weaker than GPL, so you can't release an actual plugin > class >> > >>>>> (which uses the JUMP API's) as LGPL. >> > >>>>> >> > >>>>> However, I think what you can do is package up an independent > library >> > >>>>> under some other license (as long as it doesn't use any JUMP > code) and >> > >>>>> then call it from a "wrapper" plugin which is under GPL. >> > >>>>> >> > >>>>> Sunburned Surveyor wrote: >> > >>>>> >> > >>>>> >> > >>>>> >> > >>>>> >> > >>>>>> I think Paul hit the nail on the head. GeoTools is worried > about >> > >>>>>> including code that can't be included in commercial > applications. >> > >>>>>> >> > >>>>>> I found an interesting article that discusses whether or not > you >> > >>>>>> should use the LGPL or GPL for library code at the link Sascha > sent. >> > >>>>>> The article is here: >> > >>>>>> >> > >>>>>> http://www.fsf.org/licensing/licenses/why-not-lgpl.html >> > >>>>>> >> > >>>>>> I'll have to think carefully about this. It seems like a very >> > >>>>>> important difference. Any thoughts on whether or not we want to >> > >>>>>> encourage development of OpenJUMP plug-ins and "support" or > library >> > >>>>>> code under the GPL or LGPL? >> > >>>>>> >> > >>>>>> (I'm probably opening Pandora's box with this question.) >> > >>>>>> >> > >>>>>> I'm really undecided as to which license I should use for my > code. >> > >>>>>> >> > >>>>>> The Sunburned Surveyor >> > >>>>>> >> > >>>>>> On 6/21/07, Paul Austin <[EMAIL PROTECTED]> wrote: >> > >>>>>> >> > >>>>>> >> > >>>>>> >> > >>>>>> >> > >>>>>> >> > >>>>>>> The only problem would be if you used SS's new classes in a > commercial >> > >>>>>>> application. Which in fact would be unlikely as they would not > be >> > >>>>>>> allowed to use the JUMP code anyway because it is GPL. >> > >>>>>>> >> > >>>>>>> I think the rule is commercial apps can use LGPL libraries but > not GPL ones. >> > >>>>>>> >> > >>>>>>> I took another approach for the same problem I added a > FeatureFactory to >> > >>>>>>> my reader components and have a JumpFeatureFactory that will > create >> > >>>>>>> features which implement both my DataObject interface and the > Jump >> > >>>>>>> Feature interface. This way there is no conversion required > between >> > >>>>>>> feature models. You just set the factory based on the type of > feature >> > >>>>>>> instance you want. The reader uses this factory to create the > instances. >> > >>>>>>> >> > >>>>>>> Paul >> > >>>>>>> >> > >>>>>>> Sunburned Surveyor wrote: >> > >>>>>>> >> > >>>>>>> >> > >>>>>>> >> > >>>>>>> >> > >>>>>>> >> > >>>>>>>> I was talking to Jody Garnett a little bit about a home for a >> > >>>>>>>> converter or pair of converters that would allow developers > to do the >> > >>>>>>>> GeoTools > JUMP and JUMP > GeoTools Feature Model conversion. > He said >> > >>>>>>>> that there may be some issues since any code that I write > will >> > >>>>>>>> necessarily need to utilize JUMP code released under the GPL. > This is >> > >>>>>>>> an issue because GeoTools is released under the LGPL. >> > >>>>>>>> >> > >>>>>>>> I don't know as much about this area as I should, so I'm > hoping to get >> > >>>>>>>> some suggestions from this group. How might I be able to get > code that >> > >>>>>>>> works with JUMP code under the GPl to play nice with GeoTools > code >> > >>>>>>>> released under the LGPL? Is this even possible? >> > >>>>>>>> >> > >>>>>>>> Thanks for the suggestions. >> > >>>>>>>> >> > >>>>>>>> The Sunburned Surveyor >> > >>>>>>>> >> > >>>>>>>> > ------------------------------------------------------------------------- >> > >>>>>>>> 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 >> > >>>>>> >> > >>>>>> >> > >>>>>> >> > >>>>>> >> > >>>>>> >> > >>>>>> >> > >>>>> -- >> > >>>>> Martin Davis >> > >>>>> Senior Technical Architect >> > >>>>> Refractions Research, Inc. >> > >>>>> (250) 383-3022 >> > >>>>> >> > >>>>> >> > >>>>> > ------------------------------------------------------------------------- >> > >>>>> 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 >> > >>> >> > >>> >> > >> -- >> > >> public class WhoDidIt{ // A comment. I love comments >> > >> private static Person sender; >> > >> >> > >> public static void main (String[] foo){ >> > >> >> > >> sender = new Person(); >> > >> sender.setName(new String[]{"Edgar", "Soldin"}); >> > >> >> > >> Address address = new Address(); >> > >> address.setStreet("Stadtweg 119"); >> > >> address.setZip(39116); >> > >> address.setCity("Magdeburg"); >> > >> address.setCountry("Germany"); >> > >> >> > >> sender.setAddress(address); >> > >> >> > >> sender.setMobilePhone(" +49(0)171-2782880 "); >> > >> sender.setWebSiteUrl(" http://www.soldin.de "); >> > >> sender.setEmail(" [EMAIL PROTECTED] "); >> > >> sender.setPGPPublicKey(" http://www.soldin.de/edgar_soldin.asc "); >> > >> sender.setGender(true); >> > >> >> > >> System.out.println(sender.toString()); >> > >> } >> > >> } >> > >> >> > >> >> > >> > ------------------------------------------------------------------------- >> > >> 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 >> > > >> > >> > >> > -- >> > public class WhoDidIt{ // A comment. I love comments >> > private static Person sender; >> > >> > public static void main (String[] foo){ >> > >> > sender = new Person(); >> > sender.setName(new String[]{"Edgar", "Soldin"}); >> > >> > Address address = new Address(); >> > address.setStreet("Stadtweg 119"); >> > address.setZip(39116); >> > address.setCity("Magdeburg"); >> > address.setCountry("Germany"); >> > >> > sender.setAddress(address); >> > >> > sender.setMobilePhone(" +49(0)171-2782880 "); >> > sender.setWebSiteUrl(" http://www.soldin.de "); >> > sender.setEmail(" [EMAIL PROTECTED] "); >> > sender.setPGPPublicKey(" http://www.soldin.de/edgar_soldin.asc "); >> > sender.setGender(true); >> > >> > System.out.println(sender.toString()); >> > } >> > } >> > >> > >> > > ------------------------------------------------------------------------- >> > 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/ >> >> > ------------------------------------------------------------------------- >> 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
