org.thiesen.collections.set.impl.AbstractDelegatingMutableSet.java Source code

Introduction

Here is the source code for org.thiesen.collections.set.impl.AbstractDelegatingMutableSet.java

Source

/*
 *  This file is part of Thiesen Collections.
 *  
 *  Copyright (c) 2010 by Marcus Thiesen (marcus@thiesen.org)
 *
 *  Thiesen Collections is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Thiesen Collections is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with Thiesen Collections.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.thiesen.collections.set.impl;

import java.util.Iterator;
import java.util.Set;

import org.thiesen.collections.collection.impl.Collections3;
import org.thiesen.collections.common.view.set.MutableSetView;
import org.thiesen.collections.set.IImmutableSet;
import org.thiesen.collections.set.views.IMutableSetView;
import org.thiesen.collections.set.views.IUnmodifiableSetView;

import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;

public abstract class AbstractDelegatingMutableSet<E> extends SetViews.AbstractIMutableSet<E> {

    private final Set<E> _delegate;

    protected AbstractDelegatingMutableSet(final Set<E> set) {
        _delegate = set;
    }

    AbstractDelegatingMutableSet() {
        _delegate = null;
        // for deserialization
    }

    @Override
    public boolean add(final E e) {
        return _delegate.add(e);
    }

    @Override
    public void clear() {
        _delegate.clear();
    }

    @Override
    public boolean remove(final Object o) {
        return _delegate.remove(o);
    }

    @Override
    public boolean containsAll(final Iterable<?> i) {
        return Collections3.containsAll(_delegate, i);
    }

    @Override
    public Iterator<E> iterator() {
        return _delegate.iterator();
    }

    @Override
    public MutableSetView<E> asCollectionsView() {
        return SetViews.asMutableSetView(_delegate);
    }

    @Override
    public boolean contains(final Object o) {
        return _delegate.contains(o);
    }

    @Override
    public boolean isEmpty() {
        return _delegate.isEmpty();
    }

    @Override
    public boolean isNotEmpty() {
        return !isEmpty();
    }

    @Override
    public int size() {
        return _delegate.size();
    }

    @Override
    public Object[] toArray() {
        return _delegate.toArray();
    }

    @Override
    public <T> T[] toArray(final T[] a) {
        return _delegate.toArray(a);
    }

    @Override
    public IMutableSetView<E> filter(final Predicate<E> predicate) {
        return SetViews.asIMutableSetView(Sets.filter(_delegate, predicate));
    }

    @Override
    public IImmutableSet<E> immutableCopy() {
        return ImmutableSet.copyOf(_delegate);
    }

    @Override
    public IUnmodifiableSetView<E> asUnmodifiableView() {
        return SetViews.asIUnmodifiableSetView(_delegate);
    }

    @Override
    protected Set<E> delegate() {
        return _delegate;
    }

    @Override
    public boolean hasSingleValueOnly() {
        return Iterables.size(delegate()) == 1;
    }

    @Override
    public E getSingleValue() {
        return Iterables.getOnlyElement(delegate());
    }

}