PREUN

/bin/sh

{
  [ $1 -eq 0 ] || exit 0
  update-alternatives --remove hibernate_jdbc_cache /usr/share/java/c3p0.jar
} >/dev/null 2>&1 || :

POSTIN

/bin/sh

update-alternatives --install /usr/share/java/hibernate_jdbc_cache.jar \
  hibernate_jdbc_cache /usr/share/java/c3p0.jar 20