de.dhke.projects.cutil.collections.immutable.GenericImmutableCollection.java Source code

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Here is the source code for de.dhke.projects.cutil.collections.immutable.GenericImmutableCollection.java

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/**
 * (c) 2009-2014 Peter Wullinger
 *
 * $Id$
 *
 * Use, modification and restribution of this file are covered by the
 * terms of the Artistic License 2.0.
 *
 * You should have received a copy of the license terms in a file named
 * "LICENSE" together with this software package.
 *
 * Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT
 * HOLDER AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES. THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
 * A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED TO THE
 * EXTENT PERMITTED BY YOUR LOCAL LAW. UNLESS REQUIRED BY LAW, NO
 * COPYRIGHT HOLDER OR CONTRIBUTOR WILL BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT
 * OF THE USE OF THE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 **/
package de.dhke.projects.cutil.collections.immutable;

import java.util.Collection;
import org.apache.commons.collections15.Transformer;

/**
 *
 * @param <T> 
 * @param <C> 
 * @author Peter Wullinger <java@dhke.de>
 */
public class GenericImmutableCollection<T, C extends Collection<T>> extends GenericImmutableIterable<T, C>
        implements Collection<T> {
    protected GenericImmutableCollection(final C backColl, final Transformer<T, T> valueTransformer) {
        super(backColl, valueTransformer);
    }

    public static <T, C extends Collection<T>> GenericImmutableCollection<T, C> decorate(final C backColl) {
        return new GenericImmutableCollection<>(backColl, null);
    }

    public static <T, C extends Collection<T>> GenericImmutableCollection<T, C> decorate(final C backColl,
            final Transformer<T, T> valueTransformer) {
        return new GenericImmutableCollection<>(backColl, valueTransformer);
    }

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

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

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

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

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

    @Override
    public boolean add(T e) {
        throw new UnsupportedOperationException("Cannot modify ImmutableCollectionSet.");
    }

    @Override
    public boolean remove(Object o) {
        throw new UnsupportedOperationException("Cannot modify ImmutableCollectionSet.");
    }

    @Override
    public boolean containsAll(Collection<?> c) {
        return getDecoratee().containsAll(c);
    }

    @Override
    public boolean addAll(Collection<? extends T> c) {
        throw new UnsupportedOperationException("Cannot modify ImmutableCollectionSet.");
    }

    @Override
    public boolean retainAll(Collection<?> c) {
        throw new UnsupportedOperationException("Cannot modify ImmutableCollectionSet.");
    }

    @Override
    public boolean removeAll(Collection<?> c) {
        throw new UnsupportedOperationException("Cannot modify ImmutableCollectionSet.");
    }

    @Override
    public void clear() {
        throw new UnsupportedOperationException("Cannot modify ImmutableCollectionSet.");
    }
}