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/*
* Copyright (c) 2012, 2015, 2016, 2019, 2022 Eike Stepper (Loehne, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.util.container;
import java.util.HashSet;
import java.util.Set;
import java.util.function.Consumer;
/**
* An implementation of a {@link Container container} that stores its {@link #getElements() elements} in a {@link #getSet() set}.
*
* @since 3.2
* @author Eike Stepper
*/
public class SetContainer<E> extends PersistableContainer<E>
{
private final Set<E> set;
public SetContainer(Class<E> componentType)
{
this(componentType, new HashSet<E>());
}
public SetContainer(Class<E> componentType, Set<E> set)
{
super(componentType);
this.set = set;
}
protected Set<E> getSet()
{
return set;
}
@Override
protected boolean backingStoreIsEmpty()
{
return set.isEmpty();
}
@Override
protected int backingStoreSize()
{
return set.size();
}
@Override
protected E[] backingStoreToArray(E[] a)
{
return set.toArray(a);
}
@Override
protected void backingStoreForEach(Consumer<E> consumer)
{
if (consumer != null)
{
for (E element : set)
{
consumer.accept(element);
}
}
}
@Override
protected boolean backingStoreContains(E element)
{
return set.contains(element);
}
@Override
protected boolean backingStoreAdd(E element)
{
return set.add(element);
}
@Override
protected boolean backingStoreRemove(E element)
{
return set.remove(element);
}
@Override
protected void backingStoreClear()
{
set.clear();
}
}
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