| /* |
| * Copyright (c) 2009, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation |
| // |
| package org.eclipse.persistence.jpa.jpql.utility.iterable; |
| |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import org.eclipse.persistence.jpa.jpql.utility.iterator.ArrayIterator; |
| |
| /** |
| * An <code>ArrayIterable</code> provides an {@link Iterable} |
| * for an array of objects of type <code>E</code>. |
| * |
| * @param <E> the type of elements returned by the iterable's iterator |
| * |
| * @see ArrayIterator |
| * @see <a href="http://git.eclipse.org/c/dali/webtools.dali.git/tree/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterable/ArrayListIterable.java">ArrayListIterable</a> |
| */ |
| public class ArrayIterable<E> |
| implements Iterable<E> |
| { |
| final E[] array; |
| final int start; |
| final int length; |
| |
| /** |
| * Construct an iterable for the specified array. |
| */ |
| @SafeVarargs |
| @SuppressWarnings({"varargs"}) |
| public ArrayIterable(E... array) { |
| this(array, 0, array.length); |
| } |
| |
| /** |
| * Construct an iterable for the specified array, |
| * starting at the specified start index and continuing for |
| * the rest of the array. |
| */ |
| public ArrayIterable(E[] array, int start) { |
| this(array, start, array.length - start); |
| } |
| |
| /** |
| * Construct an iterable for the specified array, |
| * starting at the specified start index and continuing for |
| * the specified length. |
| */ |
| public ArrayIterable(E[] array, int start, int length) { |
| super(); |
| if ((start < 0) || (start > array.length)) { |
| throw new IllegalArgumentException("start: " + start); //$NON-NLS-1$ |
| } |
| if ((length < 0) || (length > array.length - start)) { |
| throw new IllegalArgumentException("length: " + length); //$NON-NLS-1$ |
| } |
| this.array = array; |
| this.start = start; |
| this.length = length; |
| } |
| |
| @Override |
| public Iterator<E> iterator() { |
| return new ArrayIterator<>(this.array, this.start, this.length); |
| } |
| |
| @Override |
| public String toString() { |
| return Arrays.toString(this.array); |
| } |
| } |