org.neo4j.helpers.collection
Class CollectionWrapper<T,U>

java.lang.Object
  org.neo4j.helpers.collection.CollectionWrapper<T,U>

Type Parameters:

T - the type of items

U - the type of items of the underlying/wrapped collection

All Implemented Interfaces:

java.lang.Iterable<T>, java.util.Collection<T>

public abstract class CollectionWrapper<T,U>
extends java.lang.Object
implements java.util.Collection<T>

Wraps a Collection, making it look (and function) like a collection holding another type of items. The wrapper delegates to its underlying collection instead of keeping track of the items itself.

Constructor Summary

CollectionWrapper(java.util.Collection<U> underlyingCollection)

Method Summary

boolean	add(T o)
boolean	addAll(java.util.Collection c)
void	clear()
boolean	contains(java.lang.Object o)
boolean	containsAll(java.util.Collection c)
protected java.util.Collection<U>	convertCollection(java.util.Collection c)
boolean	isEmpty()
java.util.Iterator<T>	iterator()
protected abstract U	objectToUnderlyingObject(T object)
boolean	remove(java.lang.Object o)
boolean	removeAll(java.util.Collection c)
boolean	retainAll(java.util.Collection c)
int	size()
java.lang.Object[]	toArray()
<R> R[]	toArray(R[] a)
protected abstract T	underlyingObjectToObject(U object)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Collection

equals, hashCode

Constructor Detail

CollectionWrapper

public CollectionWrapper(java.util.Collection<U> underlyingCollection)

Method Detail

objectToUnderlyingObject

protected abstract U objectToUnderlyingObject(T object)

underlyingObjectToObject

protected abstract T underlyingObjectToObject(U object)

add

public boolean add(T o)

Specified by:

add in interface java.util.Collection<T>

clear

public void clear()

Specified by:

clear in interface java.util.Collection<T>

contains

public boolean contains(java.lang.Object o)

Specified by:

contains in interface java.util.Collection<T>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Collection<T>

iterator

public java.util.Iterator<T> iterator()

Specified by:

iterator in interface java.lang.Iterable<T>

Specified by:

iterator in interface java.util.Collection<T>

remove

public boolean remove(java.lang.Object o)

Specified by:

remove in interface java.util.Collection<T>

size

public int size()

Specified by:

size in interface java.util.Collection<T>

convertCollection

protected java.util.Collection<U> convertCollection(java.util.Collection c)

retainAll

public boolean retainAll(java.util.Collection c)

Specified by:

retainAll in interface java.util.Collection<T>

addAll

public boolean addAll(java.util.Collection c)

Specified by:

addAll in interface java.util.Collection<T>

removeAll

public boolean removeAll(java.util.Collection c)

Specified by:

removeAll in interface java.util.Collection<T>

containsAll

public boolean containsAll(java.util.Collection c)

Specified by:

containsAll in interface java.util.Collection<T>

toArray

public java.lang.Object[] toArray()

Specified by:

toArray in interface java.util.Collection<T>

toArray

public <R> R[] toArray(R[] a)

Specified by:

toArray in interface java.util.Collection<T>