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com.tangosol.util
Class RestrictedCollections.RestrictedEntrySet

java.lang.Object
com.tangosol.util.Base
com.tangosol.util.RestrictedCollections.RestrictedEntrySet

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable, java.util.Collection, java.util.Set

Enclosing class:

RestrictedCollections

public static class RestrictedCollections.RestrictedEntrySet

extends Base

implements java.util.Set, java.io.Serializable

A restricted Collection that requires its contents to be of a specified class.

Nested Class Summary

protected class	RestrictedCollections.RestrictedEntrySet.RestrictedEntry A Map Entry that restricts the key and value types.
protected class	RestrictedCollections.RestrictedEntrySet.RestrictedIterator A Map Entry Iterator that restricts the key and value types.

Field Summary

protected java.lang.Class	m_clzVal The class of value stored in the Map.
protected java.util.Set	m_set The underlying Entry Set.

Constructor Summary

RestrictedCollections.RestrictedEntrySet(java.util.Set set, java.lang.Class clzKey, java.lang.Class clzVal)
Constructor.

Method Summary

boolean	add(java.lang.Object o) Ensures that this Collection contains the specified element.
boolean	addAll(java.util.Collection col) Adds all of the elements in the specified Collection to this Collection (optional operation).
protected void	checkValue(java.lang.Object o) Check the passed object to verify that it passes the "value" restriction of this Map.
void	clear() Removes all of the elements from this Collection.
boolean	contains(java.lang.Object o) Returns true if this Collection contains the specified element.
boolean	containsAll(java.util.Collection col) Returns true if this Collection contains all of the elements in the specified Collection.
boolean	equals(java.lang.Object o) Compares the specified object with this collection for equality.
int	hashCode() Returns the hash code value for this collection.
boolean	isEmpty() Returns true if this Collection contains no elements.
java.util.Iterator	iterator() Returns an Iterator over the elements contained in this Collection.
boolean	remove(java.lang.Object o) Removes a single instance of the specified element from this Collection, if it is present (optional operation).
boolean	removeAll(java.util.Collection col) Removes all this Collection's elements that are also contained in the specified Collection (optional operation).
boolean	retainAll(java.util.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.
java.lang.Object[]	toArray() Returns an array containing all of the elements in this Collection.
java.lang.Object[]	toArray(java.lang.Object[] ao) Returns an array containing all of the elements in this Collection whose runtime type is that of the specified array.
java.lang.String	toString() Return a String description for this collection.
protected java.util.Map.Entry	wrapEntry(java.util.Map.Entry entry) Wrap an Entry from the Entry Set to make a Restricted Entry.
protected java.util.Iterator	wrapIterator(java.util.Iterator iter) Wrap an Iterator from the Entry Set to make a Restricted Iterator.

Field Detail

m_set

protected java.util.Set m_set

The underlying Entry Set.

m_clzVal

protected java.lang.Class m_clzVal

The class of value stored in the Map.

Constructor Detail

RestrictedCollections.RestrictedEntrySet

public RestrictedCollections.RestrictedEntrySet(java.util.Set set,
                                                java.lang.Class clzKey,
                                                java.lang.Class clzVal)

Constructor.

Parameters:

set - the underlying Entry Set

clzKey - the class of keys that may be stored in the Map

clzVal - the class of values that may be stored in the Map

Method Detail

size

public int size()

Returns the number of elements in this Collection.

Specified by:

size in interface java.util.Collection

Specified by:

size in interface java.util.Set

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 java.util.Collection

Specified by:

isEmpty in interface java.util.Set

Returns:

true if this Collection contains no elements

contains

public boolean contains(java.lang.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 java.util.Collection

Specified by:

contains in interface java.util.Set

Parameters:

o - the object to search for in the Collection

Returns:

true if this Collection contains the specified object

iterator

public java.util.Iterator iterator()

Returns an Iterator over the elements contained in this Collection.

Specified by:

iterator in interface java.lang.Iterable

Specified by:

iterator in interface java.util.Collection

Specified by:

iterator in interface java.util.Set

Returns:

an Iterator over the elements contained in this Collection

toArray

public java.lang.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 java.util.Collection

Specified by:

toArray in interface java.util.Set

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 java.lang.Object[] toArray(java.lang.Object[] ao)

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 java.util.Collection

Specified by:

toArray in interface java.util.Set

Parameters:

ao - 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(java.lang.Object o)

Ensures that this Collection contains the specified element.

Specified by:

add in interface java.util.Collection

Specified by:

add in interface java.util.Set

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(java.lang.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 java.util.Collection

Specified by:

remove in interface java.util.Set

Parameters:

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

Returns:

true if the Collection contained the specified element

containsAll

public boolean containsAll(java.util.Collection col)

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

Specified by:

containsAll in interface java.util.Collection

Specified by:

containsAll in interface java.util.Set

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

addAll

public boolean addAll(java.util.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 java.util.Collection

Specified by:

addAll in interface java.util.Set

Parameters:

col - elements to be inserted into this Collection

Returns:

true if this Collection changed as a result of the call

removeAll

public boolean removeAll(java.util.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 java.util.Collection

Specified by:

removeAll in interface java.util.Set

Parameters:

col - elements to be removed from this Collection

Returns:

true if this Collection changed as a result of the call

retainAll

public boolean retainAll(java.util.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 java.util.Collection

Specified by:

retainAll in interface java.util.Set

Parameters:

col - elements to be retained in this Collection

Returns:

true if this Collection changed as a result of the call

clear

public void clear()

Removes all of the elements from this Collection.

Specified by:

clear in interface java.util.Collection

Specified by:

clear in interface java.util.Set

equals

public boolean equals(java.lang.Object o)

Compares the specified object with this collection for equality.

Obeys the general contract of Collection.equals.

Specified by:

equals in interface java.util.Collection

Specified by:

equals in interface java.util.Set

Parameters:

o - Object to be compared for equality with this Collection

Returns:

true if the specified object is equal to this Collection

hashCode

public int hashCode()

Returns the hash code value for this collection. Obeys the general contract of Collection.hashCode.

Specified by:

hashCode in interface java.util.Collection

Specified by:

hashCode in interface java.util.Set

Returns:

the hash code value for this collection

toString

public java.lang.String toString()

Return a String description for this collection.

Returns:

a String description of the Collection

checkValue

protected void checkValue(java.lang.Object o)

Check the passed object to verify that it passes the "value" restriction of this Map.

Parameters:

o - the Object to check

Throws:

java.lang.ClassCastException - if the class of the passed Object prevents it from being used as a value in this Map

wrapEntry

protected java.util.Map.Entry wrapEntry(java.util.Map.Entry entry)

Wrap an Entry from the Entry Set to make a Restricted Entry.

Parameters:

entry - a Map Entry to wrap

Returns:

a Map Entry that restricts its type

wrapIterator

protected java.util.Iterator wrapIterator(java.util.Iterator iter)

Wrap an Iterator from the Entry Set to make a Restricted Iterator.

Parameters:

iter - a Iterator to wrap

Returns:

a Restricted Iterator

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