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 <[email protected]> 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 <[email protected]> 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 <[email protected]>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 <[email protected]>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 [email protected]. >>>>>> To post to this group, send email to [email protected]. >>>>>> >>>>>> 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 [email protected]. >>>> To post to this group, send email to [email protected]. >>>> 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 [email protected]. >> To post to this group, send email to [email protected]. >> 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 [email protected]. > To post to this group, send email to [email protected]. > 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/h2-database. For more options, visit https://groups.google.com/d/optout.
