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Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/TransformationListIterator.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/TransformationListIterator.java | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/TransformationListIterator.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/TransformationListIterator.java deleted file mode 100644 index 01455cd3d2..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/TransformationListIterator.java +++ /dev/null @@ -1,152 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2005, 2010 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.List; -import java.util.ListIterator; - -import org.eclipse.jpt.common.utility.internal.StringTools; -import org.eclipse.jpt.common.utility.internal.Transformer; -import org.eclipse.jpt.common.utility.internal.iterables.ListIterable; - -/** - * A <code>TransformationListIterator</code> wraps another {@link ListIterator} - * 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. - * <p> - * The methods {@link #set(Object)} and {@link #add(Object)} - * are left unsupported in this class. - * - * @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.TransformationListIterable - */ -public class TransformationListIterator<E1, E2> - implements ListIterator<E2> -{ - private final ListIterator<? extends E1> listIterator; - private final Transformer<E1, ? extends E2> transformer; - - - /** - * Construct an iterator with the specified list - * and a disabled transformer. - * Use this constructor if you want to override the - * {@link #transform(Object)} method instead of building - * a {@link Transformer}. - */ - public TransformationListIterator(List<? extends E1> list) { - this(list.listIterator()); - } - - /** - * Construct an iterator with the specified nested listed 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 TransformationListIterator(ListIterator<? extends E1> listIterator) { - this(listIterator, Transformer.Disabled.<E1, E2>instance()); - } - - /** - * Construct an iterator with the specified list - * and a disabled transformer. - * Use this constructor if you want to override the - * {@link #transform(Object)} method instead of building - * a {@link Transformer}. - */ - public TransformationListIterator(ListIterable<? extends E1> listIterable) { - this(listIterable.iterator()); - } - - /** - * Construct an iterator with the specified list and transformer. - */ - public TransformationListIterator(List<? extends E1> list, Transformer<E1, ? extends E2> transformer) { - this(list.listIterator(), transformer); - } - - /** - * Construct an iterator with the specified list and transformer. - */ - public TransformationListIterator(ListIterable<? extends E1> listIterable, Transformer<E1, ? extends E2> transformer) { - this(listIterable.iterator(), transformer); - } - - /** - * Construct an iterator with the specified nested iterator - * and transformer. - */ - public TransformationListIterator(ListIterator<? extends E1> listIterator, Transformer<E1, ? extends E2> transformer) { - super(); - this.listIterator = listIterator; - this.transformer = transformer; - } - - public boolean hasNext() { - // delegate to the nested iterator - return this.listIterator.hasNext(); - } - - public E2 next() { - // transform the object returned by the nested iterator before returning it - return this.transform(this.listIterator.next()); - } - - public int nextIndex() { - // delegate to the nested iterator - return this.listIterator.nextIndex(); - } - - public boolean hasPrevious() { - // delegate to the nested iterator - return this.listIterator.hasPrevious(); - } - - public E2 previous() { - // transform the object returned by the nested iterator before returning it - return this.transform(this.listIterator.previous()); - } - - public int previousIndex() { - // delegate to the nested iterator - return this.listIterator.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.listIterator.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.listIterator); - } - -} |