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Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/TransformationIterator.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/TransformationIterator.java | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/TransformationIterator.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/TransformationIterator.java deleted file mode 100644 index 7b6aa41bd2..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/TransformationIterator.java +++ /dev/null @@ -1,103 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2005, 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.common.utility.internal.iterators; - -import java.util.Iterator; -import org.eclipse.jpt.common.utility.internal.StringTools; -import org.eclipse.jpt.common.utility.internal.Transformer; - - -/** - * A <code>TransformationIterator</code> wraps another {@link Iterator} - * and transforms its results for client consumption. To use, supply a - * {@link Transformer} or subclass <code>TransformationIterator</code> - * and override the {@link #transform(Object)} method. - * Objects of type <code>E1</code> are transformed into objects of type <code>E2</code>; - * i.e. the iterator returns objects of type <code>E2</code>. - * - * @param <E1> input: the type of elements to be transformed - * @param <E2> output: the type of elements returned by the iterator - * - * @see org.eclipse.jpt.common.utility.internal.iterables.TransformationIterable - */ -public class TransformationIterator<E1, E2> - implements Iterator<E2> -{ - private final Iterator<? extends E1> iterator; - private final Transformer<E1, ? extends E2> transformer; - - - /** - * Construct an iterator with the specified iterable - * and a disabled transformer. - * Use this constructor if you want to override the - * {@link #transform(Object)} method instead of building - * a {@link Transformer}. - */ - public TransformationIterator(Iterable<? extends E1> iterable) { - this(iterable.iterator()); - } - - /** - * Construct an iterator with the specified nested iterator - * and a disabled transformer. - * Use this constructor if you want to override the - * {@link #transform(Object)} method instead of building - * a {@link Transformer}. - */ - public TransformationIterator(Iterator<? extends E1> iterator) { - this(iterator, Transformer.Disabled.<E1, E2>instance()); - } - - /** - * Construct an iterator with the specified iterable and transformer. - */ - public TransformationIterator(Iterable<? extends E1> iterable, Transformer<E1, ? extends E2> transformer) { - this(iterable.iterator(), transformer); - } - - /** - * Construct an iterator with the specified nested iterator - * and transformer. - */ - public TransformationIterator(Iterator<? extends E1> iterator, Transformer<E1, ? extends E2> transformer) { - super(); - this.iterator = iterator; - this.transformer = transformer; - } - - public boolean hasNext() { - // delegate to the nested iterator - return this.iterator.hasNext(); - } - - public E2 next() { - // transform the object returned by the nested iterator before returning it - return this.transform(this.iterator.next()); - } - - public void remove() { - // delegate to the nested iterator - this.iterator.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.iterator); - } - -} |