com.sun.jdo.spi.persistence.support.ejb.cmp

Class EJBHashSet

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

java.util.HashSet

com.sun.jdo.spi.persistence.support.ejb.cmp.EJBHashSet

All Implemented Interfaces:

Serializable, Cloneable, Iterable, Collection, Set

public class EJBHashSet
extends HashSet

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
EJBHashSet(com.sun.jdo.api.persistence.support.PersistenceManager pm, com.sun.jdo.spi.persistence.support.sqlstore.ejb.JDOEJB20Helper helper, Collection pcs) Creates new instance of EJBHashSet for this parameters.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(Object o) Adds the specified element to this set if it is not already present.
boolean	addAll(Collection c) Adds all of the elements in the specified collection to this collection
void	clear() Removes all of the elements from this set.
Object	clone() Returns a shallow copy of this HashSet instance: the elements themselves are not cloned.
boolean	contains(Object o) Returns true if this set contains the specified element.
boolean	containsAll(Collection c) Returns true if this collection contains all of the elements in the specified collection.
HashSet	getSCOHashSet() Returns set of the persistence-capable instances associated with this Set.
void	invalidate() Marks this Set as invalid and releases all references.
boolean	isEmpty() Returns true if this set contains no elements.
Iterator	iterator() Returns an iterator over the elements in this set.
boolean	remove(Object o) Removes the given element from this set if it is present.
boolean	removeAll(Collection c) Removes from this collection all of its elements that are contained in the specified collection (optional operation).
boolean	retainAll(Collection c) Retains only the elements in this collection that are contained in the specified collection (optional operation).
void	setSCOHashSet(Collection coll) Replace the set of the persistence-capable instances associated with this EJBHashSet.
int	size() Returns the number of elements in this set (its cardinality).

Methods inherited from class java.util.AbstractSet

equals, hashCode

Methods inherited from class java.util.AbstractCollection

toArray, toArray, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

equals, hashCode, toArray, toArray

Constructor Detail

EJBHashSet

public EJBHashSet(com.sun.jdo.api.persistence.support.PersistenceManager pm,
          com.sun.jdo.spi.persistence.support.sqlstore.ejb.JDOEJB20Helper helper,
          Collection pcs)

Creates new instance of EJBHashSet for this parameters.

Parameters:

pm - the PersistenceManager associated with the calling bean.

helper - the JDOEJB20Helper instance.

pcs - a Collection of persistence-capable instances.

Method Detail

add

public boolean add(Object o)

Adds the specified element to this set if it is not already present.

Specified by:

add in interface Collection

Specified by:

add in interface Set

Overrides:

add in class HashSet

Parameters:

o - element to be added to this set.

Returns:

true if the set did not already contain the specified element.

See Also:

HashSet

addAll

public boolean addAll(Collection c)

Adds all of the elements in the specified collection to this collection

Specified by:

addAll in interface Collection

Specified by:

addAll in interface Set

Overrides:

addAll in class AbstractCollection

Parameters:

c - collection whose elements are to be added to this collection.

Returns:

true if this collection changed as a result of the call.

Throws:

UnsupportedOperationException - if the addAll method is not supported by this collection.

See Also:

AbstractCollection, HashSet

remove

public boolean remove(Object o)

Removes the given element from this set if it is present.

Specified by:

remove in interface Collection

Specified by:

remove in interface Set

Overrides:

remove in class HashSet

Parameters:

o - object to be removed from this set, if present.

Returns:

true if the set contained the specified element.

See Also:

HashSet

removeAll

public boolean removeAll(Collection c)

Removes from this collection all of its elements that are contained in the specified collection (optional operation).

Processes each element remove internally not to have call backs into #remove(Object).

Specified by:

removeAll in interface Collection

Specified by:

removeAll in interface Set

Overrides:

removeAll in class AbstractSet

Parameters:

c - elements to be removed from this collection.

Returns:

true if this collection changed as a result of the call.

Throws:

UnsupportedOperationException - removeAll is not supported by this collection.

See Also:

HashSet, AbstractCollection

retainAll

public boolean retainAll(Collection c)

Retains only the elements in this collection that are contained in the specified collection (optional operation).

Specified by:

retainAll in interface Collection

Specified by:

retainAll in interface Set

Overrides:

retainAll in class AbstractCollection

Returns:

true if this collection changed as a result of the call.

Throws:

UnsupportedOperationException - if the retainAll method is not supported by this collection.

See Also:

HashSet, AbstractCollection

clear

public void clear()

Removes all of the elements from this set.

Specified by:

clear in interface Collection

Specified by:

clear in interface Set

Overrides:

clear in class HashSet

See Also:

HashSet

size

public int size()

Returns the number of elements in this set (its cardinality).

Specified by:

size in interface Collection

Specified by:

size in interface Set

Overrides:

size in class HashSet

Returns:

the number of elements in this set (its cardinality).

isEmpty

public boolean isEmpty()

Returns true if this set contains no elements.

Specified by:

isEmpty in interface Collection

Specified by:

isEmpty in interface Set

Overrides:

isEmpty in class HashSet

Returns:

true if this set contains no elements.

contains

public boolean contains(Object o)

Returns true if this set contains the specified element.

Specified by:

contains in interface Collection

Specified by:

contains in interface Set

Overrides:

contains in class HashSet

Parameters:

o - element whose presence in this set is to be tested.

Returns:

true if this set contains the specified element.

containsAll

public boolean containsAll(Collection c)

Returns true if this collection contains all of the elements in the specified collection.

This implementation iterates over the specified collection, checking each element returned by the iterator in turn to see if it's contained in this collection. If all elements are so contained true is returned, otherwise false.

Specified by:

containsAll in interface Collection

Specified by:

containsAll in interface Set

Overrides:

containsAll in class AbstractCollection

Parameters:

c - collection to be checked for containment in this collection.

Returns:

true if this collection contains all of the elements in the specified collection.

See Also:

contains(Object)

clone

public Object clone()

Returns a shallow copy of this HashSet instance: the elements themselves are not cloned.

Overrides:

clone in class HashSet

Returns:

a shallow copy of this set.

getSCOHashSet

public HashSet getSCOHashSet()

Returns set of the persistence-capable instances associated with this Set.

Returns:

Set of the persistence-capable instances.

setSCOHashSet

public void setSCOHashSet(Collection coll)

Replace the set of the persistence-capable instances associated with this EJBHashSet. There is no need to check transaction as it has already been checked in this case.

iterator

public Iterator iterator()

Returns an iterator over the elements in this set. The elements are returned in no particular order.

Specified by:

iterator in interface Iterable

Specified by:

iterator in interface Collection

Specified by:

iterator in interface Set

Overrides:

iterator in class HashSet

Returns:

an Iterator over the elements in this set.

See Also:

ConcurrentModificationException

invalidate

public void invalidate()

Marks this Set as invalid and releases all references.