diff options
Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/TransformationListIterator.java')
-rw-r--r-- | jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/TransformationListIterator.java | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/TransformationListIterator.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/TransformationListIterator.java deleted file mode 100644 index 087fc11046..0000000000 --- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/TransformationListIterator.java +++ /dev/null @@ -1,108 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2005, 2007 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.iterators; - -import java.util.ListIterator; -import org.eclipse.jpt.utility.internal.StringTools; -import org.eclipse.jpt.utility.internal.Transformer; - -/** - * A <code>TransformationListIterator</code> wraps another <code>ListIterator</code> - * and transforms its results for client consumption. To use, supply a - * <code>Transformer</code> or subclass <code>TransformationIterator</code> - * and override the <code>transform(Object)</code> method. - * - * The methods <code>set(Object)</code> and <code>add(Object)</code> - * are left unsupported in this class. - */ -public class TransformationListIterator<E1, E2> - implements ListIterator<E2> -{ - private final ListIterator<? extends E1> nestedIterator; - private final Transformer<E1, ? extends E2> transformer; - - - /** - * Construct an iterator with the specified nested iterator - * and a disabled transformer. - * Use this constructor if you want to override the - * <code>transform(Object)</code> method instead of building - * a <code>Transformer</code>. - */ - public TransformationListIterator(ListIterator<? extends E1> nestedIterator) { - this(nestedIterator, Transformer.Disabled.<E1, E2>instance()); - } - - /** - * Construct an iterator with the specified nested iterator - * and transformer. - */ - public TransformationListIterator(ListIterator<? extends E1> nestedIterator, Transformer<E1, ? extends E2> transformer) { - super(); - this.nestedIterator = nestedIterator; - this.transformer = transformer; - } - - public boolean hasNext() { - // delegate to the nested iterator - return this.nestedIterator.hasNext(); - } - - public E2 next() { - // transform the object returned by the nested iterator before returning it - return this.transform(this.nestedIterator.next()); - } - - public int nextIndex() { - // delegate to the nested iterator - return this.nestedIterator.nextIndex(); - } - - public boolean hasPrevious() { - // delegate to the nested iterator - return this.nestedIterator.hasPrevious(); - } - - public E2 previous() { - // transform the object returned by the nested iterator before returning it - return this.transform(this.nestedIterator.previous()); - } - - public int previousIndex() { - // delegate to the nested iterator - return this.nestedIterator.previousIndex(); - } - - public void add(E2 o) { - throw new UnsupportedOperationException(); - } - - public void set(E2 o) { - throw new UnsupportedOperationException(); - } - - public void remove() { - // delegate to the nested iterator - this.nestedIterator.remove(); - } - - /** - * Transform the specified object and return the result. - */ - protected E2 transform(E1 next) { - return this.transformer.transform(next); - } - - @Override - public String toString() { - return StringTools.buildToStringFor(this, this.nestedIterator); - } - -} |