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## org.apache.openjpa.lib.util
Class ReferenceHashSet

    java.lang.Object
      org.apache.openjpa.lib.util.ReferenceHashSet

All Implemented Interfaces:
  Serializable, Iterable, Collection, Set

    public class ReferenceHashSet

extends Object
implements Set, Serializable

A set whose values may be stored as weak or soft references.

Author:
  Abe White
See Also:
  Serialized Form

Field Summary
`static int` | `HARD` Hard reference marker.
`static int` | `SOFT` Soft reference marker.
`static int` | `WEAK` Weak reference marker.

Constructor Summary
`ReferenceHashSet(int refType)` Construct a set with the given reference type.

Method Summary
`boolean` | `add(Object obj)`
`boolean` | `addAll(Collection coll)`
`void` | `clear()`
`boolean` | `contains(Object obj)`
`boolean` | `containsAll(Collection coll)`
`boolean` | `equals(Object obj)`
`int` | `hashCode()`
`boolean` | `isEmpty()`
`Iterator` | `iterator()`
`boolean` | `remove(Object obj)`
`boolean` | `removeAll(Collection coll)`
`boolean` | `retainAll(Collection coll)`
`int` | `size()`
`Object[]` | `toArray()`
`Object[]` | `toArray(Object[] arr)`

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### HARD

    public static final int HARD

  Hard reference marker.

  See Also:
    Constant Field Values

### SOFT

    public static final int SOFT

  Soft reference marker.

  See Also:
    Constant Field Values

### WEAK

    public static final int WEAK

  Weak reference marker.

  See Also:
    Constant Field Values

Constructor Detail

### ReferenceHashSet

    public ReferenceHashSet(int refType)

  Construct a set with the given reference type.

Method Detail

### add

    public boolean add(Object obj)

  Specified by:
    `add` in interface `Collection`
  Specified by:
    `add` in interface `Set`

### addAll

    public boolean addAll(Collection coll)

  Specified by:
    `addAll` in interface `Collection`
  Specified by:
    `addAll` in interface `Set`

### clear

    public void clear()

  Specified by:
    `clear` in interface `Collection`
  Specified by:
    `clear` in interface `Set`

### contains

    public boolean contains(Object obj)

  Specified by:
    `contains` in interface `Collection`
  Specified by:
    `contains` in interface `Set`

### containsAll

    public boolean containsAll(Collection coll)

  Specified by:
    `containsAll` in interface `Collection`
  Specified by:
    `containsAll` in interface `Set`

### isEmpty

    public boolean isEmpty()

  Specified by:
    `isEmpty` in interface `Collection`
  Specified by:
    `isEmpty` in interface `Set`

### iterator

    public Iterator iterator()

  Specified by:
    `iterator` in interface `Iterable`
  Specified by:
    `iterator` in interface `Collection`
  Specified by:
    `iterator` in interface `Set`

### remove

    public boolean remove(Object obj)

  Specified by:
    `remove` in interface `Collection`
  Specified by:
    `remove` in interface `Set`

### removeAll

    public boolean removeAll(Collection coll)

  Specified by:
    `removeAll` in interface `Collection`
  Specified by:
    `removeAll` in interface `Set`

### retainAll

    public boolean retainAll(Collection coll)

  Specified by:
    `retainAll` in interface `Collection`
  Specified by:
    `retainAll` in interface `Set`

### size

    public int size()

  Specified by:
    `size` in interface `Collection`
  Specified by:
    `size` in interface `Set`

### toArray

    public Object[] toArray()

  Specified by:
    `toArray` in interface `Collection`
  Specified by:
    `toArray` in interface `Set`

### toArray

    public Object[] toArray(Object[] arr)

  Specified by:
    `toArray` in interface `Collection`
  Specified by:
    `toArray` in interface `Set`

### hashCode

    public int hashCode()

  Specified by:
    `hashCode` in interface `Collection`
  Specified by:
    `hashCode` in interface `Set`
  Overrides:
    `hashCode` in class `Object`

### equals

    public boolean equals(Object obj)

  Specified by:
    `equals` in interface `Collection`
  Specified by:
    `equals` in interface `Set`
  Overrides:
    `equals` in class `Object`

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Copyright © 2006 Apache Software Foundation. All Rights Reserved.