Paul Holmes-Higgin cefda8c965 Updated header to LGPL
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@18931 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
2010-03-01 22:48:39 +00:00

125 lines
3.3 KiB
Java

/*
* Copyright (C) 2005-2010 Alfresco Software Limited.
*
* This file is part of Alfresco
*
* Alfresco is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Alfresco is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
*/
package org.alfresco.repo.remote;
import java.io.IOException;
import java.io.InputStream;
import org.alfresco.service.cmr.remote.RepoRemoteTransport;
/**
* A wrapper implementation of InputStream to work with
* a RepoRemoteTransport instance.
* @author britt
*/
public class RepoRemoteInputStream extends InputStream
{
/**
* The RepoRemoteTransport reference.
*/
private RepoRemoteTransport fRepoRemote;
/**
* The ticket holder.
*/
private ClientTicketHolder fTicketHolder;
/**
* The handle to the input stream.
*/
private String fHandle;
/**
* Construct one.
* @param handle The handle returned by getInputStream();
* @param remote The AVMRemote instance.
*/
public RepoRemoteInputStream(String handle, RepoRemoteTransport remote,
ClientTicketHolder ticketHolder)
{
fHandle = handle;
fRepoRemote = remote;
fTicketHolder = ticketHolder;
}
/**
* Read in a single byte.
* @return The byte as 0-255 or -1 for eof.
*/
@Override
public int read() throws IOException
{
try
{
byte [] buff = fRepoRemote.readInput(fTicketHolder.getTicket(), fHandle, 1);
if (buff.length == 0)
{
return -1;
}
return ((int)buff[0]) & 0xff;
}
catch (Exception e)
{
throw new IOException("Remote I/O Error.");
}
}
/**
* Read a buffer of bytes.
* @param b The buffer into which to put the bytes.
* @param off The offset into the buffer.
* @param len The number of bytes to read.
* @return The actual number of bytes read or -1 on eof.
*/
@Override
public int read(byte[] b, int off, int len) throws IOException
{
try
{
byte [] buff = fRepoRemote.readInput(fTicketHolder.getTicket(), fHandle, len);
if (buff.length == 0)
{
return -1;
}
System.arraycopy(buff, 0, b, off, buff.length);
return buff.length;
}
catch (Exception e)
{
throw new IOException("Remote I/O Error.");
}
}
/**
* Close the underlying AVMRemote handle.
*/
@Override
public void close() throws IOException
{
try
{
fRepoRemote.closeInputHandle(fTicketHolder.getTicket(), fHandle);
}
catch (Exception e)
{
throw new IOException("Remote Error closing input stream.");
}
}
}