Class DBCommandListener

All Implemented Interfaces:

public class DBCommandListener extends CommandListener
Standard command listener to process commands that require a database access. ActiveJDBC class Base will be used to open a connection.

This class will open a new connection, start a new transaction and will execute the command. After that, the transaction will be committed. In case execution of a command fails, the transaction will be rolled back and command and exception wil be passed to onException(Command, Exception) method, where a subclass can process them further. The connection will be closed regardless of outcome.

Igor Polevoy on 2/14/16.
  • Constructor Details

    • DBCommandListener

      public DBCommandListener(String jndiConnection)
      JNDI string to open a connection from a pool. Example: "java:comp/env/jdbc/yourdb".
      jndiConnection - JDBC connection string.
    • DBCommandListener

      public DBCommandListener()
      Use this constructor to open a connection using a set of properties from "" file according to current ACTIVE_ENV environment (development, production, etc.).
  • Method Details

    • onCommand

      public <T extends Command> void onCommand(T command)
      onCommand in class CommandListener
      command - command to execute.
    • onException

      protected void onException(Command command, Exception exception)
      Override in subclasses to handle exceptions. This implementation does nothing.
      command - command that was unsuccessfully executed
      exception - exception caught during command execution