Michael Bayne
f629b267ba
least on something that was Comparable, but unfortunately, the numeric type's only shared supertype is Number and that is not comparable. If I require Number, then you can't do greatest(timestamp, timestamp), and if I require Comparable, then you can't do greatest(int, double) because the compiler can't unify those types to something that is Comparable. I could require that you only compare apples with apples (i.e. greatest(int, int) or greatest(double, double)), but databases will happily compare greatest(int, double) and people are going to want to do that. I could introduce some sort of numeric conversion expressions, but I think that's getting too deeply into the realm of type safety for type safety's sake.
Depot Persistence Library ------------------------- Depot is a relational persistence library for Java. It is an ORM library, but has aims that are somewhat different from the popular "managed" persistence libraries like Hibernate and others. Website ------- See the Depot website for documentation and other info: http://code.google.com/p/depot/ Building -------- The library is built using ant. It can be found here: http://jakarta.apache.org/ant/ If you use build-ivy.xml to build, the necessary dependencies will be automatically fetched by Ivy (which will itself be downloaded if needed). To compile the code and generate a jar file, invoke: % ant -f build-ivy.xml dist Invoke 'ant -f build-ivy.xml -p' to see information on other build targets. Depot also provides .classpath and .project files for Eclipse users which require that you set an EXT_LIBS_DIR variable indicating the location of the external jar dependencies. The Depot Eclipse project also depends on the Eclipse project for the samskivert library. That library can be found at: http://code.google.com/p/samskivert/ License and Distribution ------------------------ Depot is released under the LGPL. This means you are free to use Depot on any project, open source or proprietary, but that any modifications made to the library must be made available to the maintainers. See COPYING for more detailed information. The most recent version of the Depot source code is available at the website listed above. $Id$