As a database developer, you want these sub-transactions or autonomous transactions to be processed and committed regardless of what happens to the larger surrounding transaction block.
The pg_background Postgres extension originally written by Robert Haas starts a separate worker to process a SQL statement, which is a nice way to achieve an autonomous transaction.
For bureaucratic reasons, a colleague of mine had to print, sign, scan and send by email a high number of pages. To save trees, ink, time, and to stick it...
Instead to find where org.w3c.dom comes from I've been using this script:
mvn dependency:copy-dependencies -DincludeScope=test -DoutputDirectory=deps
for i in deps/*.jar; do if unzip -l $i| grep -q org.w3c.dom; then echo $i; fi ; done
A. Gondhali, R. Chandra, A. Shinde, und S. Pimple.. International Journal on Recent and Innovation Trends in Computing and Communication, 3 (4):
1841--1844(April 2015)
T. Hoeren. (2010)P. 419 et seq. Available at: http://www.uni-muenster.de/Jura.itm/hoeren/materialien/Skript/Skript_Internetrecht_September%202010.pdf..