diff options
Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterables/SnapshotCloneListIterable.java')
| -rw-r--r-- | jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterables/SnapshotCloneListIterable.java | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterables/SnapshotCloneListIterable.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterables/SnapshotCloneListIterable.java deleted file mode 100644 index 251c05f80c..0000000000 --- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterables/SnapshotCloneListIterable.java +++ /dev/null @@ -1,102 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2009 Oracle. 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: - * Oracle - initial API and implementation - ******************************************************************************/ -package org.eclipse.jpt.utility.internal.iterables; - -import java.util.Arrays; -import java.util.List; -import java.util.ListIterator; - -import org.eclipse.jpt.utility.internal.StringTools; -import org.eclipse.jpt.utility.internal.iterators.CloneListIterator; - -/** - * A <code>SnapshotCloneListIterable</code> returns a list iterator on a - * "snapshot" of a list, allowing for concurrent access to the original list. - * A copy of the list is created when the list iterable is constructed. - * As a result, the contents of the list will be the same with - * every call to {@link #iterator()}, even if the original list is modified via - * the list iterator's mutation methods. - * <p> - * The original list passed to the <code>SnapshotCloneListIterable</code>'s - * constructor should be thread-safe (e.g. {@link java.util.Vector}); - * otherwise you run the risk of a corrupted list. - * <p> - * By default, the list iterator returned by a <code>SnapshotCloneListIterable</code> does not - * support the {@link ListIterator} mutation operations; this is because it does not - * have access to the original list. But if the <code>SnapshotCloneListIterable</code> - * is supplied with a {@link CloneListIterator.Mutator} it will delegate the - * {@link ListIterator} mutation operations to the <code>Mutator</code>. - * Alternatively, a subclass can override the list iterable's mutation - * methods. - * <p> - * This list iterable is useful for multiple passes over a list that should not - * be changed (e.g. by another thread) between passes. - * - * @param <E> the type of elements returned by the list iterable's list iterator - * - * @see CloneListIterator - * @see LiveCloneListIterable - * @see SnapshotCloneIterable - */ -public class SnapshotCloneListIterable<E> - extends CloneListIterable<E> -{ - private final Object[] array; - - - // ********** constructors ********** - - /** - * Construct a "snapshot" list iterable for the specified list. - * The {@link ListIterator} modify operations will not be supported - * by the list iterator returned by {@link #iterator()} - * unless a subclass overrides the list iterable's modify - * method. - */ - public SnapshotCloneListIterable(List<? extends E> list) { - super(); - this.array = list.toArray(); - } - - /** - * Construct a "snapshot" list iterable for the specified list. - * The specified mutator will be used by any generated list iterators to - * modify the original list. - */ - public SnapshotCloneListIterable(List<? extends E> list, CloneListIterator.Mutator<E> mutator) { - super(mutator); - this.array = list.toArray(); - } - - - // ********** ListIterable implementation ********** - - public ListIterator<E> iterator() { - return new LocalCloneListIterator<E>(this.mutator, this.array); - } - - @Override - public String toString() { - return StringTools.buildToStringFor(this, Arrays.toString(this.array)); - } - - - // ********** clone iterator ********** - - /** - * provide access to "internal" constructor - */ - protected static class LocalCloneListIterator<E> extends CloneListIterator<E> { - protected LocalCloneListIterator(Mutator<E> mutator, Object[] array) { - super(mutator, array); - } - } - -} |