mirror of
https://github.com/Alfresco/alfresco-community-repo.git
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git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@18931 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
125 lines
3.3 KiB
Java
125 lines
3.3 KiB
Java
/*
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* Copyright (C) 2005-2010 Alfresco Software Limited.
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*
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* This file is part of Alfresco
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.alfresco.repo.remote;
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import java.io.IOException;
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import java.io.InputStream;
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import org.alfresco.service.cmr.remote.RepoRemoteTransport;
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/**
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* A wrapper implementation of InputStream to work with
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* a RepoRemoteTransport instance.
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* @author britt
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*/
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public class RepoRemoteInputStream extends InputStream
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{
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/**
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* The RepoRemoteTransport reference.
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*/
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private RepoRemoteTransport fRepoRemote;
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/**
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* The ticket holder.
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*/
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private ClientTicketHolder fTicketHolder;
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/**
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* The handle to the input stream.
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*/
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private String fHandle;
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/**
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* Construct one.
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* @param handle The handle returned by getInputStream();
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* @param remote The AVMRemote instance.
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*/
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public RepoRemoteInputStream(String handle, RepoRemoteTransport remote,
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ClientTicketHolder ticketHolder)
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{
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fHandle = handle;
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fRepoRemote = remote;
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fTicketHolder = ticketHolder;
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}
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/**
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* Read in a single byte.
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* @return The byte as 0-255 or -1 for eof.
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*/
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@Override
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public int read() throws IOException
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{
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try
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{
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byte [] buff = fRepoRemote.readInput(fTicketHolder.getTicket(), fHandle, 1);
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if (buff.length == 0)
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{
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return -1;
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}
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return ((int)buff[0]) & 0xff;
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}
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catch (Exception e)
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{
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throw new IOException("Remote I/O Error.");
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}
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}
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/**
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* Read a buffer of bytes.
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* @param b The buffer into which to put the bytes.
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* @param off The offset into the buffer.
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* @param len The number of bytes to read.
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* @return The actual number of bytes read or -1 on eof.
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*/
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@Override
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public int read(byte[] b, int off, int len) throws IOException
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{
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try
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{
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byte [] buff = fRepoRemote.readInput(fTicketHolder.getTicket(), fHandle, len);
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if (buff.length == 0)
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{
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return -1;
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}
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System.arraycopy(buff, 0, b, off, buff.length);
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return buff.length;
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}
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catch (Exception e)
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{
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throw new IOException("Remote I/O Error.");
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}
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}
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/**
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* Close the underlying AVMRemote handle.
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*/
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@Override
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public void close() throws IOException
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{
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try
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{
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fRepoRemote.closeInputHandle(fTicketHolder.getTicket(), fHandle);
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}
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catch (Exception e)
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{
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throw new IOException("Remote Error closing input stream.");
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}
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}
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}
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