org.codehaus.groovy.runtime.metaclass

## Class ConcurrentReaderHashMap.Entry

- java.lang.Object
- - org.codehaus.groovy.runtime.metaclass.ConcurrentReaderHashMap.Entry

- All Implemented Interfaces:
    Map.Entry
  Enclosing class:
    ConcurrentReaderHashMap

      protected static class ConcurrentReaderHashMap.Entry
      extends Object
      implements Map.Entry

  ConcurrentReaderHashMap collision list entry.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected int` | `hash`
    `protected Object` | `key`
    `protected ConcurrentReaderHashMap.Entry` | `next`
    `protected Object` | `value`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `equals(Object o)`
    `Object` | `getKey()`
    `Object` | `getValue()` Get the value.
    `int` | `hashCode()`
    `Object` | `setValue(Object value)` Set the value of this entry.
    `String` | `toString()`

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

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

- - ### Field Detail

    - #### hash

          protected final int hash

    - #### key

          protected final Object key

    - #### next

          protected final ConcurrentReaderHashMap.Entry next

    - #### value

          protected volatile Object value

  - ### Method Detail

    - #### getKey

          public Object getKey()

      Specified by:
        `getKey` in interface `Map.Entry`

    - #### getValue

          public Object getValue()

      Get the value. Note: In an entrySet or entrySet.iterator, unless the set or iterator is used under synchronization of the table as a whole (or you can otherwise guarantee lack of concurrent modification), `getValue` might return null, reflecting the fact that the entry has been concurrently removed. However, there are no assurances that concurrent removals will be reflected using this method.
      Specified by:
        `getValue` in interface `Map.Entry`
      Returns:
        the current value, or null if the entry has been detectably removed.

    - #### setValue

          public Object setValue(Object value)

      Set the value of this entry. Note: In an entrySet or entrySet.iterator), unless the set or iterator is used under synchronization of the table as a whole (or you can otherwise guarantee lack of concurrent modification), `setValue` is not strictly guaranteed to actually replace the value field obtained via the `get` operation of the underlying hash table in multi-threaded applications. If iterator-wide synchronization is not used, and any other concurrent `put` or `remove` operations occur, sometimes even to other entries, then this change is not guaranteed to be reflected in the hash table. (It might, or it might not. There are no assurances either way.)
      Specified by:
        `setValue` in interface `Map.Entry`
      Parameters:
        `value` - the new value.
      Returns:
        the previous value, or null if entry has been detectably removed.
      Throws:
        `NullPointerException` - if the value is `null`.

    - #### equals

          public boolean equals(Object o)

      Specified by:
        `equals` in interface `Map.Entry`
      Overrides:
        `equals` in class `Object`

    - #### hashCode

          public int hashCode()

      Specified by:
        `hashCode` in interface `Map.Entry`
      Overrides:
        `hashCode` in class `Object`

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`