Package org.aksw.commons.accessors

Class LazyCollection<T,C extends Collection<T>>

java.lang.Object

java.util.AbstractCollection<T>

org.aksw.commons.accessors.LazyCollection<T,C>

Type Parameters:

T -

All Implemented Interfaces:

Iterable<T>, Collection<T>

public class LazyCollection<T,C extends Collection<T>>
extends AbstractCollection<T>

Collection that forwards method calls to another one that is only instantiated on addition of items if it did not yet exist Delegates removals to it

Author:

raven Apr 9, 2018

Field Summary

Fields

Modifier and Type	Field	Description
protected SingleValuedAccessor<C>	accessor
protected Supplier<? extends C>	ctor
protected boolean	setNullOnEmpty
static Set<String>	test

Constructor Summary

Constructors

Constructor	Description
LazyCollection(SingleValuedAccessor<C> accessor, Supplier<? extends C> ctor, boolean setNullOnEmpty)

Method Summary

Modifier and Type	Method	Description
boolean	add(T e)
void	checkUnset(Collection<T> backend)
boolean	contains(Object o)
Iterator<T>	iterator()
static void	main(String[] args)
boolean	remove(Object o)
int	size()

Methods inherited from class java.util.AbstractCollection

addAll, clear, containsAll, isEmpty, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

equals, hashCode, parallelStream, removeIf, spliterator, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Field Details

accessor

protected SingleValuedAccessor<C extends Collection<T>> accessor

ctor

protected Supplier<? extends C extends Collection<T>> ctor

setNullOnEmpty

protected boolean setNullOnEmpty

test

public static Set<String> test

Constructor Details

LazyCollection

public LazyCollection(SingleValuedAccessor<C> accessor,
 Supplier<? extends C> ctor,
 boolean setNullOnEmpty)

Method Details

add

public boolean add(T e)

Specified by:

add in interface Collection<T>

Overrides:

add in class AbstractCollection<T>

checkUnset

public void checkUnset(Collection<T> backend)

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<T>

Overrides:

remove in class AbstractCollection<T>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<T>

Overrides:

contains in class AbstractCollection<T>

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Collection<T>

Specified by:

iterator in interface Iterable<T>

Specified by:

iterator in class AbstractCollection<T>

size

public int size()

Specified by:

size in interface Collection<T>

Specified by:

size in class AbstractCollection<T>

main

public static void main(String[] args)