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com.tangosol.util
Class ConverterCollections.ConverterCollection

java.lang.Object
com.tangosol.util.Base
com.tangosol.util.ConverterCollections.ConverterCollection

All Implemented Interfaces:

Serializable, Iterable, Collection

Direct Known Subclasses:

ConverterCollections.ConverterList, ConverterCollections.ConverterSet

Enclosing class:

ConverterCollections

public static class ConverterCollections.ConverterCollection

extends Base

implements Collection, Serializable

A Converter Collection views an underlying Collection through a Converter.

Field Summary

protected Collection	m_col The underlying Collection.
protected Converter	m_convDown The Converter from this Collection to the underlying Collection.
protected Converter	m_convUp The Converter from the underlying Collection to this Collection.

Constructor Summary

ConverterCollections.ConverterCollection(Collection col, Converter convUp, Converter convDown)
Constructor.

Method Summary

boolean	add(Object o) Ensures that this Collection contains the specified element.
boolean	addAll(Collection col) Adds all of the elements in the specified Collection to this Collection (optional operation).
void	clear() Removes all of the elements from this Collection.
boolean	contains(Object o) Returns true if this Collection contains the specified element.
boolean	containsAll(Collection col) Returns true if this Collection contains all of the elements in the specified Collection.
boolean	equals(Object o) Compares the specified object with this collection for equality.
Collection	getCollection() Return the underlying Collection.
Converter	getConverterDown() Return the Converter used to pass values down to the underlying Collection.
Converter	getConverterUp() Return the Converter used to view the underlying Collection's values through.
protected Collection	instantiateCollection(Collection col, Converter convUp, Converter convDown) Create a Converter Collection.
protected Iterator	instantiateIterator(Iterator iter, Converter conv) Create a Converter Iterator.
void	invalidate() Drop references to the underlying Collection and the Converters.
boolean	isEmpty() Returns true if this Collection contains no elements.
Iterator	iterator() Returns an Iterator over the elements contained in this Collection.
boolean	remove(Object o) Removes a single instance of the specified element from this Collection, if it is present (optional operation).
boolean	removeAll(Collection col) Removes all this Collection's elements that are also contained in the specified Collection (optional operation).
boolean	retainAll(Collection col) Retains only the elements in this Collection that are contained in the specified Collection (optional operation).
int	size() Returns the number of elements in this Collection.
Object[]	toArray() Returns an array containing all of the elements in this Collection.
Object[]	toArray(Object[] aoDest) Returns an array containing all of the elements in this Collection whose runtime type is that of the specified array.
String	toString() Return a String description for this collection.

Methods inherited from interface java.util.Collection

hashCode

Field Detail

m_col

protected Collection m_col

The underlying Collection.

m_convUp

protected Converter m_convUp

The Converter from the underlying Collection to this Collection.

m_convDown

protected Converter m_convDown

The Converter from this Collection to the underlying Collection.

Constructor Detail

ConverterCollections.ConverterCollection

public ConverterCollections.ConverterCollection(Collection col,
                                                Converter convUp,
                                                Converter convDown)

Constructor.

Parameters:

col - the underlying Collection

convUp - the Converter from the underlying Collection

convDown - the Converter to the underlying Collection

Method Detail

size

public int size()

Returns the number of elements in this Collection.

Specified by:

size in interface Collection

Returns:

the number of elements in this Collection

isEmpty

public boolean isEmpty()

Returns true if this Collection contains no elements.

Specified by:

isEmpty in interface Collection

Returns:

true if this Collection contains no elements

contains

public boolean contains(Object o)

Returns true if this Collection contains the specified element. More formally, returns true if and only if this Collection contains at least one element e such that (o==null ? e==null : o.equals(e)).

Specified by:

contains in interface Collection

Parameters:

o - the object to search for in the Collection

Returns:

true if this Collection contains the specified object

iterator

public Iterator iterator()

Returns an Iterator over the elements contained in this Collection.

Specified by:

iterator in interface Iterable

Specified by:

iterator in interface Collection

Returns:

an Iterator over the elements contained in this Collection

toArray

public Object[] toArray()

Returns an array containing all of the elements in this Collection. Obeys the general contract of Collection.toArray.

Specified by:

toArray in interface Collection

Returns:

an array, whose component type is the class of objects that may be stored in the Collection containing all of the elements in this Collection

toArray

public Object[] toArray(Object[] aoDest)

Returns an array containing all of the elements in this Collection whose runtime type is that of the specified array. Obeys the general contract of Collection.toArray.

Specified by:

toArray in interface Collection

Parameters:

aoDest - the array into which the elements of this Collection are to be stored, if it is big enough; otherwise, a new array of the same runtime type is allocated for this purpose

Returns:

an array containing the elements of this Collection

add

public boolean add(Object o)

Ensures that this Collection contains the specified element.

Specified by:

add in interface Collection

Parameters:

o - element whose presence in this Collection is to be ensured

Returns:

true if the Collection changed as a result of the call

remove

public boolean remove(Object o)

Removes a single instance of the specified element from this Collection, if it is present (optional operation). More formally, removes an element e such that (o==null ? e==null : o.equals(e)), if the Collection contains one or more such elements. Returns true if the Collection contained the specified element (or equivalently, if the Collection changed as a result of the call).

Specified by:

remove in interface Collection

Parameters:

o - element to be removed from this Collection, if present

Returns:

true if the Collection contained the specified element

containsAll

public boolean containsAll(Collection col)

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

Specified by:

containsAll in interface Collection

Parameters:

col - 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:

Collection.contains(Object)

addAll

public boolean addAll(Collection col)

Adds all of the elements in the specified Collection to this Collection (optional operation). The behavior of this operation is undefined if the specified Collection is modified while the operation is in progress. (This implies that the behavior of this call is undefined if the specified Collection is this Collection, and this Collection is nonempty.)

Specified by:

addAll in interface Collection

Parameters:

col - elements to be inserted into this Collection

Returns:

true if this Collection changed as a result of the call

See Also:

Collection.add(Object)

removeAll

public boolean removeAll(Collection col)

Removes all this Collection's elements that are also contained in the specified Collection (optional operation). After this call returns, this Collection will contain no elements in common with the specified Collection.

Specified by:

removeAll in interface Collection

Parameters:

col - elements to be removed from this Collection

Returns:

true if this Collection changed as a result of the call

See Also:

Collection.remove(Object), Collection.contains(Object)

retainAll

public boolean retainAll(Collection col)

Retains only the elements in this Collection that are contained in the specified Collection (optional operation). In other words, removes from this Collection all of its elements that are not contained in the specified Collection.

Specified by:

retainAll in interface Collection

Parameters:

col - elements to be retained in this Collection

Returns:

true if this Collection changed as a result of the call

See Also:

Collection.remove(Object), Collection.contains(Object)

clear

public void clear()

Removes all of the elements from this Collection.

Specified by:

clear in interface Collection

equals

public boolean equals(Object o)

Compares the specified object with this collection for equality.

Obeys the general contract of Collection.equals.

Specified by:

equals in interface Collection

Parameters:

o - Object to be compared for equality with this Collection

Returns:

true if the specified object is equal to this Collection

See Also:

Object.equals(Object), Set.equals(Object), List.equals(Object)

toString

public String toString()

Return a String description for this collection.

Returns:

a String description of the Collection

invalidate

public void invalidate()

Drop references to the underlying Collection and the Converters.

instantiateCollection

protected Collection instantiateCollection(Collection col,
                                           Converter convUp,
                                           Converter convDown)

Create a Converter Collection.

Parameters:

col - the underlying Collection

convUp - the Converter to view the underlying Collection through

convDown - the Converter to pass items down to the underlying Collection through

Returns:

a Converter Collection

instantiateIterator

protected Iterator instantiateIterator(Iterator iter,
                                       Converter conv)

Create a Converter Iterator.

Parameters:

iter - the underlying Iterator

conv - the Converter to view the underlying Iterator through

Returns:

a Converter Iterator

getCollection

public Collection getCollection()

Return the underlying Collection.

Returns:

the underlying Collection

getConverterUp

public Converter getConverterUp()

Return the Converter used to view the underlying Collection's values through.

Returns:

the Converter from the underlying Collection

getConverterDown

public Converter getConverterDown()

Return the Converter used to pass values down to the underlying Collection.

Returns:

the Converter to the underlying Collection

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