how to connect to a PostgreSQL database using JDBC w/o host

• https://en.wikipedia.org/wiki/Java_Database_Connectivity
• http://jan-lolling.de
• https://github.com/jlolling/sqlrunner
• https://github.com/JochenHayek/sqlrunner – my fork

I am giving Jan Lolling’s SQLRunner a try to connect to a local PostgreSQL database. SQLRunner is written in Java, and it uses JDBC to connect to the various databases.

Apparently there are 2 ways to connect to a PostgreSQL database:

1. hostname + port + database + …
2. socket + database + …

The 2nd way is not just a variant of the 1st (I got told).

It appears to me, that JDBC for PostgreSQL only supports the first way. Is there a way to get this assumption confirmed?

• http://stackoverflow.com/questions/25918416/jdbc-mysql-connection-using-unix-socket :
  “Java itself doesn’t support unix domain sockets, but since you’re on windows, you can use named pipes, [..]” (I am not sure, this is true)
• http://dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-configuration-properties.html : NamedPipeSocketFactory …