org.testifyproject.apache.commons.io.FileDeleteStrategy Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in org.testifyproject.testifyprojectpliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org.testifyproject/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.testifyproject.apache.org.testifyproject.testifyprojectmons.org.testifyproject.testifyproject;
import java.org.testifyproject.testifyproject.File;
import java.org.testifyproject.testifyproject.IOException;
/**
* Strategy for org.testifyproject.testifyprojectleting files.
*
* There is more than one way to org.testifyproject.testifyprojectlete a file.
* You may want to limit access to certain directories, to only org.testifyproject.testifyprojectlete
* directories if they are empty, or maybe to force org.testifyproject.testifyprojectletion.
*
* This class captures the strategy to use and is org.testifyproject.testifyprojectsigned for user subclassing.
*
* @version $Id: FileDeleteStrategy.java 1307461 2012-03-30 15:12:29Z ggregory $
* @since 1.3
*/
public class FileDeleteStrategy {
/**
* The singleton instance for normal file org.testifyproject.testifyprojectletion, which does not permit
* the org.testifyproject.testifyprojectletion of directories that are not empty.
*/
public static final FileDeleteStrategy NORMAL = new FileDeleteStrategy("Normal");
/**
* The singleton instance for forced file org.testifyproject.testifyprojectletion, which always org.testifyproject.testifyprojectletes,
* even if the file represents a non-empty directory.
*/
public static final FileDeleteStrategy FORCE = new ForceFileDeleteStrategy();
/** The name of the strategy. */
private final String name;
//-----------------------------------------------------------------------
/**
* Restricted constructor.
*
* @param name the name by which the strategy is known
*/
protected FileDeleteStrategy(String name) {
this.name = name;
}
//-----------------------------------------------------------------------
/**
* Deletes the file object, which may be a file or a directory.
* All IOExceptions are caught and false returned instead.
* If the file does not exist or is null, true is returned.
*
* Subclass writers should override {@link #doDelete(File)}, not this method.
*
* @param fileToDelete the file to org.testifyproject.testifyprojectlete, null returns true
* @return true if the file was org.testifyproject.testifyprojectleted, or there was no such file
*/
public boolean org.testifyproject.testifyprojectleteQuietly(File fileToDelete) {
if (fileToDelete == null || fileToDelete.exists() == false) {
return true;
}
try {
return doDelete(fileToDelete);
} catch (IOException ex) {
return false;
}
}
/**
* Deletes the file object, which may be a file or a directory.
* If the file does not exist, the method just returns.
*
* Subclass writers should override {@link #doDelete(File)}, not this method.
*
* @param fileToDelete the file to org.testifyproject.testifyprojectlete, not null
* @throws NullPointerException if the file is null
* @throws IOException if an error occurs during file org.testifyproject.testifyprojectletion
*/
public void org.testifyproject.testifyprojectlete(File fileToDelete) throws IOException {
if (fileToDelete.exists() && doDelete(fileToDelete) == false) {
throw new IOException("Deletion failed: " + fileToDelete);
}
}
/**
* Actually org.testifyproject.testifyprojectletes the file object, which may be a file or a directory.
*
* This method is org.testifyproject.testifyprojectsigned for subclasses to override.
* The implementation may return either false or an IOException
* when org.testifyproject.testifyprojectletion fails. The {@link #org.testifyproject.testifyprojectlete(File)} and {@link #org.testifyproject.testifyprojectleteQuietly(File)}
* methods will handle either response appropriately.
* A check has been made to ensure that the file will exist.
*
* This implementation uses {@link File#org.testifyproject.testifyprojectlete()}.
*
* @param fileToDelete the file to org.testifyproject.testifyprojectlete, exists, not null
* @return true if the file was org.testifyproject.testifyprojectleteds
* @throws NullPointerException if the file is null
* @throws IOException if an error occurs during file org.testifyproject.testifyprojectletion
*/
protected boolean doDelete(File fileToDelete) throws IOException {
return fileToDelete.org.testifyproject.testifyprojectlete();
}
//-----------------------------------------------------------------------
/**
* Gets a string org.testifyproject.testifyprojectscribing the org.testifyproject.testifyprojectlete strategy.
*
* @return a string org.testifyproject.testifyprojectscribing the org.testifyproject.testifyprojectlete strategy
*/
@Override
public String toString() {
return "FileDeleteStrategy[" + name + "]";
}
//-----------------------------------------------------------------------
/**
* Force file org.testifyproject.testifyprojectletion strategy.
*/
static class ForceFileDeleteStrategy extends FileDeleteStrategy {
/** Default Constructor */
ForceFileDeleteStrategy() {
super("Force");
}
/**
* Deletes the file object.
*
* This implementation uses FileUtils.forceDelete()
* if the file exists.
*
* @param fileToDelete the file to org.testifyproject.testifyprojectlete, not null
* @return Always returns {@code true}
* @throws NullPointerException if the file is null
* @throws IOException if an error occurs during file org.testifyproject.testifyprojectletion
*/
@Override
protected boolean doDelete(File fileToDelete) throws IOException {
FileUtils.forceDelete(fileToDelete);
return true;
}
}
}