org.qi4j.api.concern

## Class ConcernOf<T>

- java.lang.Object
- - org.qi4j.api.concern.ConcernOf<T>

- Direct Known Subclasses:
    AbstractTraceConcern, ConcurrentModificationCheckConcern, GenericConcern, MockPlayerConcern, ReadLockConcern, ReturnCachedValueConcern, ReturnCachedValueOnExceptionConcern, SecurityConcern, StateChangeNotificationConcern, TimelineForScheduleConcern, TimingCaptureAllConcern, TransactionNotificationConcern, UnitOfWorkNotificationConcern, WriteLockConcern

      public abstract class ConcernOf<T>
      extends Object

  Base class for Concerns. It introduces a typed "next" pointer that Concerns can use to invoke the next Concern (or mixin) in the chain.

  Generic Concerns should subclass `GenericConcern` instead.

  Concerns implementations must be thread-safe in their implementation, as multiple threads may share instances.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected T` | `next` The "next" pointer.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `ConcernOf()`

  - ### Method Summary

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

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

- - ### Field Detail

    - #### next

          @ConcernFor
          protected final T next

      The "next" pointer. This points to the next concern in the chain or the mixin to be invoked.

  - ### Constructor Detail

    - #### ConcernOf

          public ConcernOf()