Hi, > You could use our filesystem abstraction layer to create a custom in memory file store that allowed you to snapshot it's contents.
Yes. Actually there is already an in-memory file system, see http://h2database.com/html/advanced.html#file_system and http://h2database.com/html/mvstore.html#offHeap Regards, Thomas On Mon, Apr 21, 2014 at 5:51 PM, Noel Grandin <noelgran...@gmail.com> wrote: > You could use our filesystem abstraction layer to create a custom in > memory file store that allowed you to snapshot it's contents. > > On Monday, 21 April 2014, Carl Desautels <carl.desaut...@yahoo.com> wrote: > >> You're correct that is more what I was hinting at, but doing that with an >> in memory database without the filesystem backup. >> >> On Friday, 18 April 2014 05:36:26 UTC-4, Thomas Mueller wrote: >>> >>> Hi, >>> >>> Your question does not seem to be whether MVMap supports serializable. >>> You don't want to use the MVMap directly, right? >>> >>> You you simply copy the file? That is, use backup and restore? >>> >>> Regards, >>> Thomas >>> >>> >>> >>> >>> >>> On Thu, Apr 17, 2014 at 9:19 PM, Carl Desautels <carl...@gmail.com>wrote: >>> >>>> I'm also interested in this feature, or I'd like to take a snapshot of >>>> an in memory h2 database and have the ability to rollback or reload to a >>>> snapshot. >>>> >>>> My use case is this: >>>> >>>> - I am using H2 in embedded in memory mode. >>>> - I have a very large test database that takes minutes to seed and >>>> between test suites the database is reset by dropping and recreating. >>>> - I wanted to cache the seeded database and just replace the dirty >>>> database after a testsuite with a copy of the seeded database. >>>> >>>> I have tried the script command and combined it with fast >>>> importing(disable; log, referential integrity, auto-commit), but that isn't >>>> noticeably faster than the traditional method of resetting the database. >>>> >>>> I was attempting to use reflection to access to the databases hash-map >>>> but obtaining a deep copy was proving troublesome, that caused me to >>>> stumble onto this thread. >>>> On Thursday, 17 April 2014 11:16:52 UTC-4, Thomas Mueller wrote: >>>> >>>>> Hi, >>>>> >>>>> You mean, the MVMap should be serializable? It's possible to do that. >>>>> It's possible to make almost every class serializable. But I don't see the >>>>> value in this case. Why do you want it? What are you trying to do? What >>>>> problem are you trying to solve? >>>>> >>>>> Regards, >>>>> Thomas >>>>> >>>>> >>>>> On Thu, Apr 17, 2014 at 4:41 AM, Frank Liu <liushen...@gmail.com>wrote: >>>>> >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "H2 Database" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to h2-database...@googlegroups.com. >>>>>> To post to this group, send email to h2-da...@googlegroups.com. >>>>>> >>>>>> Visit this group at http://groups.google.com/group/h2-database. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> >>>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "H2 Database" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to h2-database...@googlegroups.com. >>>> To post to this group, send email to h2-da...@googlegroups.com. >>>> Visit this group at http://groups.google.com/group/h2-database. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "H2 Database" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to h2-database+unsubscr...@googlegroups.com. >> To post to this group, send email to h2-database@googlegroups.com. >> Visit this group at http://groups.google.com/group/h2-database. >> For more options, visit https://groups.google.com/d/optout. >> > -- > You received this message because you are subscribed to the Google Groups > "H2 Database" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to h2-database+unsubscr...@googlegroups.com. > To post to this group, send email to h2-database@googlegroups.com. > Visit this group at http://groups.google.com/group/h2-database. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "H2 Database" group. To unsubscribe from this group and stop receiving emails from it, send an email to h2-database+unsubscr...@googlegroups.com. To post to this group, send email to h2-database@googlegroups.com. Visit this group at http://groups.google.com/group/h2-database. For more options, visit https://groups.google.com/d/optout.
