On Apr 27, 2013, at 9:50 AM, Gary Gregory wrote: > On Sat, Apr 27, 2013 at 10:43 AM, Nick Williams > <nicho...@nicholaswilliams.net> wrote: > There already existed an o.a.l.log4j.core.appender.db package that was empty. > I discovered that I could create a base AbstractDatabaseAppender that took > care of some operations common to JDBC, JPA /and/ NoSQL appenders. That led > me to use the existing db package as follows: > > db/ > common DB appender classes > > What is in common? > > Gary
- An AbstractDatabaseManager that defines connect and disconnect methods for concrete managers to implement, defines an isConnected method, defines a buffer size property, and controls buffering (which all types will support). - An AbstractDatabaseAppender that has a type parameter of LogEvent, requires an AbstractDatabaseManager implementation in its constructor, calls the manager's connect and disconnect methods when the appended is started and stopped (respectively), allows for manager replacement (configuration reloading) without event loss, and forwards events to the manager for writing to the database. This way, each database type will only need to implement connect/disconnect/write methods in the manager, implement an appender with a simple factory method to create the correct manager, and create whatever classes are necessary (if necessary) to support configuration. > > jdbc/ > JDBC appender classes > jpa/ > JPA appender classes > nosql/ > NoSQL appender classes > > I think that package structure makes a lot of sense. I'm open to convincing > arguments otherwise. > > Nick > > On Apr 27, 2013, at 9:37 AM, Gary Gregory wrote: > > > I think we should keep the packaging simpler: o.a.l.log4j.core.appender.jpa > > > > Gary > > > > On Apr 27, 2013, at 10:15, Nick Williams <nicho...@nicholaswilliams.net> > > wrote: > > > >> o.a.l.log4j.core.appender.db.jpa > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: log4j-dev-unsubscr...@logging.apache.org > > For additional commands, e-mail: log4j-dev-h...@logging.apache.org > > > > > > > -- > E-Mail: garydgreg...@gmail.com | ggreg...@apache.org > Java Persistence with Hibernate, Second Edition > JUnit in Action, Second Edition > Spring Batch in Action > Blog: http://garygregory.wordpress.com > Home: http://garygregory.com/ > Tweet! http://twitter.com/GaryGregory
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