hi all, i recently upgraded from GS 2.2.5 to 2.8.3 (w/ JDK 8) and everything works fine. now i'd like to start using 'h2gis' [1] and its GS data-store [2].
the (potential) problem i'm facing is the version of the 'H2'. in the standard GS 2.8.3 release the H2 JAR is at 1.1.119 and is present in the webapp's lib. 'h2gis' uses a newer version of H2 (1.4.189) which has an incompatible (disk format) w/ the one used in 1.1. H2 also provides a utility to 'upgrade database from 1.1...' [3]. this thread [4] (which i believe is still relevant) suggests that H2 is only used in specific use-cases... QUOTE ...once a data directory is converted to use it (either because of superoverlays or gwc metastore) you cannot go back. UNQUOTE in my case, after upgrading to GS 2.8.3 (re-using a copy of the data-dir previously used by GS 2.2.5, which in turn was a copy of the same data-dir used by GS 1.5.4) i tried: * removing the h2-1.1.119 JAR, and separately * replacing it w/ a newer version (1.4.191) everything continues to work fine in both instances. this, empirically at least, tells me that my data-dir is not using any 'feature' that would otherwise cause an H2 database to be generated. my questions are --and thanks for reading so far :-) * is there a reliable check to apply _before_ upgrading to ensure a data-dir will continue to be operational after the upgrade? i guess if an H2 database when created/used is always in a specific location w/in the data-dir then checking for the presence of such file system object should be enough. is this the case? * has any body attempted migrating to a newer version of H2, had to use the (H2) upgrade utility to 'fix' a GS data-dir, and would like to share their experience? [1] http://www.h2gis.org/ [2] https://github.com/orbisgis/h2gis-gs [3] http://h2database.com/html/download.html [4] https://sourceforge.net/p/geoserver/mailman/geoserver-devel/thread/4C2070F7.4000507%40opengeo.org/#msg25582876 TIA + cheers; rsn
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