net.sf.staccatocommons.collections.stream.internal.CollectionStream Maven / Gradle / Ivy

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/**
 *  Copyright (c) 2011, The Staccato-Commons Team
 *
 *  This program 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; version 3 of the License.
 *
 *  This program 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.
 */

package net.sf.staccatocommons.collections.stream.internal;

import java.util.Collection;
import java.util.List;
import java.util.Set;

import net.sf.staccatocommons.collections.iterable.Iterables;
import net.sf.staccatocommons.iterators.thriter.Thriterator;
import net.sf.staccatocommons.iterators.thriter.Thriterators;
import net.sf.staccatocommons.restrictions.check.NonNull;

/**
 * 
 * @author flbulgarelli
 * 
 * @param 
 */
public class CollectionStream extends StrictStream {

  private final Collection collection;

  /**
   * Creates a new {@link CollectionStream}
   * 
   * @param collection
   *          the collection to wrap
   */
  public CollectionStream(@NonNull Collection collection) {
    this.collection = collection;
  }

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

  @Override
  public final boolean contains(A element) {
    return collection.contains(element);
  }

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

  @Override
  public final Thriterator iterator() {
    return Thriterators.from(collection.iterator());
  }

  @Override
  public List toList() {
    return Iterables.toList(getCollection());
  }

  public Set toSet() {
    return Iterables.toSet(getCollection());
  }

  @Override
  public A[] toArray(Class clazz) {
    return toArray(clazz, getCollection());
  }

  protected Collection getCollection() {
    return (Collection) collection;
  }

}