Class ConnectionState

All Implemented Interfaces:

public class ConnectionState extends JdbcInterceptor
Interceptor that keep track of connection state to avoid roundtrips to the database. The ConnectionPool is optimized to do as little work as possible. The pool itself doesn't remember settings like Connection.setAutoCommit(boolean), Connection.setReadOnly(boolean), Connection.setCatalog(String) or Connection.setTransactionIsolation(int). It relies on the application to remember how and when these settings have been applied. In the cases where the application code doesn't know or want to keep track of the state, this interceptor helps cache the state, and it also avoids roundtrips to the database asking for it.
  • Field Details

    • readState

      protected final String[] readState
    • writeState

      protected final String[] writeState
    • autoCommit

      protected Boolean autoCommit
    • transactionIsolation

      protected Integer transactionIsolation
    • readOnly

      protected Boolean readOnly
    • catalog

      protected String catalog
  • Constructor Details

    • ConnectionState

      public ConnectionState()
  • Method Details

    • reset

      public void reset(ConnectionPool parent, PooledConnection con)
      Description copied from class: JdbcInterceptor
      Gets called each time the connection is borrowed from the pool This means that if an interceptor holds a reference to the connection the interceptor can be reused for another connection.
      This method may be called with null as both arguments when we are closing down the connection.
      Specified by:
      reset in class JdbcInterceptor
      parent - - the connection pool owning the connection
      con - - the pooled connection
    • disconnected

      public void disconnected(ConnectionPool parent, PooledConnection con, boolean finalizing)
      Description copied from class: JdbcInterceptor
      Called when Connection.close() is called on the underlying connection. This is to notify the interceptors, that the physical connection has been released. Implementation of this method should be thought through with care, as no actions should trigger an exception.
      disconnected in class JdbcInterceptor
      parent - - the connection pool that this connection belongs to
      con - - the pooled connection that holds this connection
      finalizing - - if this connection is finalizing. True means that the pooled connection will not reconnect the underlying connection
    • invoke

      public Object invoke(Object proxy, Method method, Object[] args) throws Throwable
      Description copied from class: JdbcInterceptor
      Gets invoked each time an operation on Connection is invoked.
      Specified by:
      invoke in interface InvocationHandler
      invoke in class JdbcInterceptor