This is sort of on my todo list, but the only O/R tool I'm familiar with is Hibernate and for licensing reasons we can't integrate that with Slide (this may change in the future). I looked at OJB, but I wasn't impressed with some of the hoops I would have to jump through to accomplish, for example, lazy instantiation.
I think this is the right way to go, if someone with the time and knowledge is willing to chip in. Right now I don't really have either :). -James On Fri, 2004-12-03 at 09:18 +0900, Carlos Villegas wrote: > This is simple enough. But how about using one of the O/R mapping tools > like Hibernate, Apache's OJB or Torque. The table names or mappings are > usually setup in an external configuraton file. It adds additional > benefits like supporting more databases and keeping all the database > adapters in sync since they all become just one. Converting JDBC code to > OJB, for example, is straightforward, we have done it, specially if > there are no stored procedures like in Slide. > > Carlos > > Warwick Burrows wrote: > > There's something about preprocessing Java source that makes me a little > > uneasy :-) Isn't there another way? eg. instead of inserting a placeholder > > that gets replaced simply change the jdbc operation strings passed to the > > jdbc client as in this example? > > > > "select name from " + Config.table_prefix + "PROPERTIES where > > field=1" > > > > Java will insert the prefix into the command automatically. There's no need > > for preprocessing and the amount of work required to change the code to suit > > this approach is no more or less than that needed to insert a placeholder > > string? > > > > Warwick > > > > > > > >>-----Original Message----- > >>From: Richard Emberson [mailto:[EMAIL PROTECTED] > >>Sent: Thursday, December 02, 2004 3:51 PM > >>To: Slide Users Mailing List > >>Subject: developers: table prefix > >> > >> > >> > >>This subject has been kicked around recently. Basically, > >>there is an easy way to do it but if none of the Slide > >>developers are interested then it will never go anywhere. > >> > >>How to add table prefixes to Slide's database table names - > >>the simple way: > >> > >>Alter the build.xml file so that it does a filtered copy to a > >>new directory "build/gen_src" prior to compilation. > >> It is from this directory that the > >>sources are then compiled. Each table name in the source has > >>the string "@TABLE_PREFIX@" prepened to it. The > >>build.properties file has a new property: > >> > >>table.prefix=<value> > >> > >>The "value" can be, for example, empty resulting in the > >>current table names or one might set the value to "SLIDE_" > >>which would result in that string being prepended to all table names. > >> > >>Additional benefits: > >> > >>One can now add properties to the build.properties file: > >> > >>version.major=2 > >>version.minor=1 > >>version.release=0 > >> > >>which could be used during the filtered copy to embed the > >>Slide version number is some class which can be accessed at runtime. > >> > >>The build date, who built the code, compile host > >>architecture, java version and vender doing compilation, cvs > >>version tag, etc. can also be generated by ant and used > >>during the filtered copy to add more runtime accessible > >>information. For those embedding Slide in a J2EE application, > >>this information would then be accessible via a JMX page. > >> > >>None of this is hard to do, its just a question of > >>identifying someone (with checkin ability) to take the first > >>step - altering the build process. > >> > >>Richard > >> > >> > >> > >>-- > >>This email message is for the sole use of the intended > >>recipient(s) and may contain confidential information. Any > >>unauthorized review, use, disclosure or distribution is > >>prohibited. If you are not the intended recipient, please > >>contact the sender by reply email and destroy all copies of > >>the original message. > >> > >>--------------------------------------------------------------------- > >>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>For additional commands, e-mail: [EMAIL PROTECTED] > >> > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
