Interface PgConnectionSupplier

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface PgConnectionSupplier

A connection supplier for a PgConnection to a Postgres database that is to be used for a PostgresChannelMessageTableSubscriber.

The supplied connection must not be read from a shared connection pool, typically represented by a DataSource. If a shared connection pool is used, this pool might reclaim a connection that was not closed within a given time frame. This becomes a problem as a PostgresChannelMessageTableSubscriber requires a dedicated Connection to receive notifications from the Postgres database. This connection needs to remain open over a longer period of time. Typically, a PgConnection should be created directly via Driver.connect(String, Properties) and a subsequent call to Wrapper.unwrap(Class).

Since:

6.0

Author:

Rafael Winterhalter

See Also:

• PostgresChannelMessageTableSubscriber

Method Summary

Modifier and Type	Method	Description
org.postgresql.jdbc.PgConnection	get()	Supply an open, un-pooled connection to a Postgres database.

Method Details

get

org.postgresql.jdbc.PgConnection get()
                              throws SQLException

Supply an open, un-pooled connection to a Postgres database.

Returns:

A dedicated connection to a Postgres database for listening.

Throws:

SQLException - If the connection could not be established.