com.izforge.izpack.installer.unpacker.FileQueueFactory Maven / Gradle / Ivy
/*
* IzPack - Copyright 2001-2012 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/
* http://izpack.codehaus.org/
*
* Copyright 2012 Tim Anderson
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/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 com.izforge.izpack.installer.unpacker;
import com.izforge.izpack.util.Librarian;
import com.izforge.izpack.util.Platform;
import com.izforge.izpack.util.os.FileQueue;
/**
* Factory for {@link FileQueue} instances, if queuing is supported by the current platform.
*
* @author Tim Anderson
*/
public class FileQueueFactory
{
/**
* Determines if the current platform supports queuing.
*/
private final boolean supportsQueue;
/**
* The librarian.
*/
private final Librarian librarian;
/**
* Constructs a {@code FileQueueFactory}.
*
* @param platform the current platform
* @param librarian the librarian
*/
public FileQueueFactory(Platform platform, Librarian librarian)
{
supportsQueue = platform.isA(Platform.Name.WINDOWS);
this.librarian = librarian;
}
/**
* Determines if queuing is supported.
*
* @return {@code true} if queuing is supported
*/
public boolean isSupported()
{
return supportsQueue;
}
/**
* Creates a new {@link FileQueue}.
*
* @return a new queue or {@code null} if queuing is not supported
*/
public FileQueue create()
{
return supportsQueue ? new FileQueue(librarian) : null;
}
}