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# AbstractBarIterationListener

- java.lang.Object
- - com.dashoptimization.AbstractBarIterationListener

- All Implemented Interfaces:
    `XPRSbarIterationListener`, `java.util.EventListener`

      public abstract class AbstractBarIterationListener
      extends java.lang.Object
      implements XPRSbarIterationListener

  Convenience implementation of `XPRSbarIterationListener`. This class has a more convenient `barIterationEvent(XPRSprob)` function than the interface.

- - ### Constructor Summary

    Constructor | Description
    --- | ---
    `AbstractBarIterationListener()` |

  - ### Method Summary

    Modifier and Type | Method | Description
    --- | --- | ---
    `abstract int` | `barIterationEvent​(XPRSprob prob)` | Invoke the callback.
    `void` | `XPRSbarIterationEvent​(XPRSprob prob, java.lang.Object vContext, IntHolder barrier_action)` |

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### AbstractBarIterationListener

          public AbstractBarIterationListener()

  - ### Method Detail

    - #### XPRSbarIterationEvent

          public final void XPRSbarIterationEvent​(XPRSprob prob,
                                                  java.lang.Object vContext,
                                                  IntHolder barrier_action)

      Specified by:
        `XPRSbarIterationEvent` in interface `XPRSbarIterationListener`

    - #### barIterationEvent

          public abstract int barIterationEvent​(XPRSprob prob)

      Invoke the callback.
      Parameters:
        `prob` - The problem on which the callback is invoked.
      Returns:
        the next action to perform (return 0 for the default). See the C reference manual for `XPRSaddcbbariteration()` for details about how values are interpreted.

Parent Topic Class Summary

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