| /******************************************************************************* |
| * Copyright (c) 2013 Oracle. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License 2.0, which accompanies this distribution |
| * and is available at https://www.eclipse.org/legal/epl-2.0/. |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.common.utility.internal.transformer; |
| |
| import org.eclipse.jpt.common.utility.command.Command; |
| import org.eclipse.jpt.common.utility.internal.ObjectTools; |
| import org.eclipse.jpt.common.utility.transformer.Transformer; |
| |
| /** |
| * Adapt a {@link Command} to the {@link Transformer} interface. |
| * The transformer will always return <code>null</code>. |
| * |
| * @param <I> input: the type of the object passed to the transformer; |
| * ignored |
| * @param <O> output: the type of the object returned by the transformer; |
| * always <code>null</code> |
| * |
| * @see org.eclipse.jpt.common.utility.internal.command.TransformerCommand |
| */ |
| public class CommandTransformer<I, O> |
| implements Transformer<I, O> |
| { |
| private final Command command; |
| |
| public CommandTransformer(Command command) { |
| super(); |
| if (command == null) { |
| throw new NullPointerException(); |
| } |
| this.command = command; |
| } |
| |
| public O transform(I input) { |
| this.command.execute(); |
| return null; |
| } |
| |
| @Override |
| public String toString() { |
| return ObjectTools.toString(this, this.command); |
| } |
| } |