StoredEntrySet (Oracle - Berkeley DB Java API)
Date: 2009-12-18

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## com.sleepycat.collections
Class StoredEntrySet<K,V>

    java.lang.Object
      com.sleepycat.collections.StoredContainer
          com.sleepycat.collections.StoredCollection<Map.Entry<K,V>>
              com.sleepycat.collections.StoredEntrySet<K,V>

All Implemented Interfaces:
  Cloneable, Iterable<Map.Entry<K,V>>, Collection<Map.Entry<K,V>>, Set<Map.Entry<K,V>>

Direct Known Subclasses:
  StoredSortedEntrySet

    public class StoredEntrySet<K,V>

extends StoredCollection<Map.Entry<K,V>>
implements Set<Map.Entry<K,V>>

The Set returned by Map.entrySet(). This class may not be instantiated directly. Contrary to what is stated by `Map.entrySet()` this class does support the `add(java.util.Map.Entry)` and `StoredCollection.addAll(java.util.Collection)` methods.

The `Map.Entry.setValue(V)` method of the Map.Entry objects that are returned by this class and its iterators behaves just as the `StoredIterator.set(E)` method does.

Field Summary

Fields inherited from class com.sleepycat.collections.StoredCollection
`DEFAULT_ITERATOR_BLOCK_SIZE`

Method Summary
`boolean` | `add(Map.Entry<K,V> mapEntry)` Adds the specified element to this set if it is not already present (optional operation).
`boolean` | `contains(Object mapEntry)` Returns true if this set contains the specified element.
`boolean` | `remove(Object mapEntry)` Removes the specified element from this set if it is present (optional operation).
`String` | `toString()` Converts the collection to a string representation for debugging.

Methods inherited from class com.sleepycat.collections.StoredCollection
`addAll, containsAll, equals, getIteratorBlockSize, hashCode, iterator, iterator, join, removeAll, retainAll, setIteratorBlockSize, size, storedIterator, storedIterator, toArray, toArray, toList`

Methods inherited from class com.sleepycat.collections.StoredContainer
`areDuplicatesAllowed, areDuplicatesOrdered, areKeyRangesAllowed, areKeysRenumbered, clear, getCursorConfig, isEmpty, isOrdered, isSecondary, isTransactional, isWriteAllowed`

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

Methods inherited from interface java.util.Set
`addAll, clear, containsAll, equals, hashCode, isEmpty, iterator, removeAll, retainAll, size, toArray, toArray`

Method Detail

### add

    public boolean add(Map.Entry<K,V> mapEntry)

  Adds the specified element to this set if it is not already present (optional operation). This method conforms to the `Set.add(E)` interface.

  Specified by:
    `add` in interface `Collection<Map.Entry<K,V>>`
  Specified by:
    `add` in interface `Set<Map.Entry<K,V>>`
  Parameters:
    `mapEntry` - must be a `Map.Entry` instance.
  Returns:
    true if the key-value pair was added to the set (and was not previously present).
  Throws:
    `UnsupportedOperationException` - if the collection is read-only.
    `ClassCastException` - if the mapEntry is not a `Map.Entry` instance.
    `RuntimeExceptionWrapper` - if a `DatabaseException` is thrown.

### remove

    public boolean remove(Object mapEntry)

  Removes the specified element from this set if it is present (optional operation). This method conforms to the `Set.remove(java.lang.Object)` interface.

  Specified by:
    `remove` in interface `Collection<Map.Entry<K,V>>`
  Specified by:
    `remove` in interface `Set<Map.Entry<K,V>>`
  Parameters:
    `mapEntry` - is a `Map.Entry` instance to be removed.
  Returns:
    true if the key-value pair was removed from the set, or false if the mapEntry is not a `Map.Entry` instance or is not present in the set.
  Throws:
    `UnsupportedOperationException` - if the collection is read-only.
    `RuntimeExceptionWrapper` - if a `DatabaseException` is thrown.

### contains

    public boolean contains(Object mapEntry)

  Returns true if this set contains the specified element. This method conforms to the `Set.contains(java.lang.Object)` interface.

  Specified by:
    `contains` in interface `Collection<Map.Entry<K,V>>`
  Specified by:
    `contains` in interface `Set<Map.Entry<K,V>>`
  Parameters:
    `mapEntry` - is a `Map.Entry` instance to be checked.
  Returns:
    true if the key-value pair is present in the set, or false if the mapEntry is not a `Map.Entry` instance or is not present in the set.
  Throws:
    `RuntimeExceptionWrapper` - if a `DatabaseException` is thrown.

### toString

    public String toString()

  Description copied from class: `StoredCollection`
  Converts the collection to a string representation for debugging. WARNING: The returned string may be very large.

  Overrides:
    `toString` in class `StoredCollection<Map.Entry<K,V>>`
  Returns:
    the string representation.

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