Re: PersistenceManagerFactory configuration for flat-file database
I will look at DataNucleus to see if it supports plain simple flat-file DB. I dunno what is simple flat file DB, and don't really like the idea of inventing our own DB (there must be enough DB's around already :-) ), so if we reuse existing ones there are, at least, * HSQLDB option that David already mentioned, * ODF (the ISO document format used by OpenOffice/KOffice) which is basically XML so is user-editable. * XML itself * JSON - also user-editable These options are all supported by DataNucleus -- Andy (DataNucleus - http://www.datanucleus.org)
Re: PersistenceManagerFactory configuration for flat-file database
Hi ozvena, In order for you to use a flat-file database, you need to find a JDO vendor that supports one. First off, what kind of flat-file database are you using? I imagine a likely JDO candidate is DataNucleus, the JDO reference implementation. If it doesn't support whatever you're using for a flat-file database, you can write a plug-in to support it. I haven't dug deeply, but you might consider DataNucleus over db4o. HTH, Matthew On Tue, May 19, 2009 at 2:34 PM, ozv...@gmail.com ozv...@gmail.com wrote: Hello, I can't find any information about how to configure PersistenceManagerFactory for flat-file database. Your help is appreciated! -- mailto:matt...@matthewadams.me skype:matthewadams12 yahoo:matthewadams aol:matthewadams12 google-talk:matthewadam...@gmail.com msn:matt...@matthewadams.me http://matthewadams.me http://www.linkedin.com/in/matthewadams
Re: PersistenceManagerFactory configuration for flat-file database
Hi Ozvena, I think you'll find that HSQL also store it data in human readable format for some table types. If that satisfies your needs, then DataNucleus will definitely do the job for you as I believe it supports HSQL. Cheers, David ozv...@gmail.com wrote: Hi Matthew, I am not using any flat-file DB. It is a new application I am developing. The size of the database can range from few entries to few dozen of entries. Each entry represents 3 strings. I want flat-file DB as it is user readable and can be changed/edited by hand if needed. I will look at DataNucleus to see if it supports plain simple flat-file DB. Thank you! Ozvena On Tue, May 19, 2009 at 5:04 PM, Matthew Adams matt...@matthewadams.mewrote: Hi ozvena, In order for you to use a flat-file database, you need to find a JDO vendor that supports one. First off, what kind of flat-file database are you using? I imagine a likely JDO candidate is DataNucleus, the JDO reference implementation. If it doesn't support whatever you're using for a flat-file database, you can write a plug-in to support it. I haven't dug deeply, but you might consider DataNucleus over db4o. HTH, Matthew On Tue, May 19, 2009 at 2:34 PM, ozv...@gmail.com ozv...@gmail.com wrote: Hello, I can't find any information about how to configure PersistenceManagerFactory for flat-file database. Your help is appreciated! -- mailto:matt...@matthewadams.me skype:matthewadams12 yahoo:matthewadams aol:matthewadams12 google-talk:matthewadam...@gmail.comgoogle-talk%3amatthewadam...@gmail.com msn:matt...@matthewadams.me http://matthewadams.me http://www.linkedin.com/in/matthewadams
