Justin! How is your work with H2 column store progressing?
/Goran Skickat från min iPad > 2 mar 2013 kl. 03:32 skrev Justin Edse <[email protected]>: > > Thank you very much Noel, > > I will take a look at those links. At first I thought I would have to really > manipulate the low level guts but perhaps not. > > Thanks again! > > > >> On Friday, March 1, 2013 1:36:59 AM UTC-5, Noel Grandin wrote: >> Welcome aboard. >> >> Rather than messing with H2's internals, your best bet is to start by >> implementing a custom TableEngine >> >> http://h2database.com/html/features.html#pluggable_tables >> http://h2database.com/javadoc/org/h2/api/TableEngine.html >> http://h2database.com/html/grammar.html#create_table >> >> On 2013-02-28 20:52, Justin Edse wrote: >> > Hello everyone, >> > >> > In a project for one of my college classes I am doing a project which >> > emphasizes turning a relational database into a column store. My >> > partner and I went through a couple of different DB's but eventually >> > picked H2 because it's written entirely in JAVA and seemed easier to >> > understand than SQLite or something else. So, we have an idea of what >> > we need to change( things such as how things are read and written from >> > memory, column format instead of row, the query executor, storage >> > layer, etc. Eventually after we are able to implement column stores >> > without compression we will try several algorithms to make querying >> > faster. But at this point my partner and I are looking over the >> > different packages for H2 in Eclipse and think we know where to begin >> > but are not completely sure. We noticed a packages called >> > "org.h2.store" and "org.h2.store.fs" and thought this might be >> > it.FileStore.java in "org.h2.store" contains methods for reading and >> > writing bytes. >> > >> > So after going through all of these different packages I am asking if >> > someone would be kind enough to point us in the right direction. >> > Someone who really really knows H2, what packages should be start >> > adjusting if we wanted to turn this into a column store rather than a >> > row store? >> > >> > Thank you very much. >> > -- >> > 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?hl=en. >> > For more options, visit https://groups.google.com/groups/opt_out. >> > >> > >> > -- > 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?hl=en. > For more options, visit https://groups.google.com/groups/opt_out. > > -- 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/groups/opt_out.
