| /******************************************************************************* |
| * Copyright (c) 2007, 2012 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.jpa.gen.internal; |
| |
| import org.eclipse.jpt.common.utility.internal.StringTools; |
| |
| public interface OverwriteConfirmer { |
| /** |
| * Return whether the entity generator should overwrite the specified |
| * file. |
| */ |
| boolean overwrite(String className); |
| |
| |
| final class Always |
| implements OverwriteConfirmer |
| { |
| public static final OverwriteConfirmer INSTANCE = new Always(); |
| |
| public static OverwriteConfirmer instance() { |
| return INSTANCE; |
| } |
| |
| // ensure single instance |
| private Always() { |
| super(); |
| } |
| |
| // everything will be overwritten |
| public boolean overwrite(String className) { |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| return StringTools.buildSingletonToString(this); |
| } |
| } |
| |
| |
| final class Never |
| implements OverwriteConfirmer |
| { |
| public static final OverwriteConfirmer INSTANCE = new Never(); |
| |
| public static OverwriteConfirmer instance() { |
| return INSTANCE; |
| } |
| |
| // ensure single instance |
| private Never() { |
| super(); |
| } |
| |
| // nothing will be overwritten |
| public boolean overwrite(String className) { |
| return false; |
| } |
| |
| @Override |
| public String toString() { |
| return StringTools.buildSingletonToString(this); |
| } |
| } |
| } |