| /* |
| * 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 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 org.apache.qpid.server.bytebuffer; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| |
| import org.apache.qpid.server.streams.CompositeInputStream; |
| |
| /** |
| * InputStream implementation that takes a list QpidByteBuffers. |
| * The QpidByteBufferInputStream takes ownership of the buffers and disposes them on close(). |
| * |
| * Not thread safe. |
| */ |
| public class QpidByteBufferInputStream extends InputStream |
| { |
| private final CompositeInputStream _compositeInputStream; |
| private final Collection<QpidByteBuffer> _buffers; |
| |
| public QpidByteBufferInputStream(Collection<QpidByteBuffer> buffers) |
| { |
| _buffers = buffers; |
| |
| final Collection<InputStream> streams = new ArrayList<>(buffers.size()); |
| for (QpidByteBuffer buffer : buffers) |
| { |
| streams.add(buffer.asInputStream()); |
| } |
| _compositeInputStream = new CompositeInputStream(streams); |
| } |
| |
| @Override |
| public int read() throws IOException |
| { |
| return _compositeInputStream.read(); |
| } |
| |
| @Override |
| public int read(byte[] b, int off, int len) throws IOException |
| { |
| return _compositeInputStream.read(b, off, len); |
| } |
| |
| @Override |
| public void mark(int readlimit) |
| { |
| _compositeInputStream.mark(readlimit); |
| } |
| |
| @Override |
| public void reset() throws IOException |
| { |
| _compositeInputStream.reset(); |
| } |
| |
| @Override |
| public boolean markSupported() |
| { |
| return _compositeInputStream.markSupported(); |
| } |
| |
| @Override |
| public long skip(long n) throws IOException |
| { |
| return _compositeInputStream.skip(n); |
| } |
| |
| @Override |
| public int available() throws IOException |
| { |
| return _compositeInputStream.available(); |
| } |
| |
| @Override |
| public void close() throws IOException |
| { |
| try |
| { |
| _compositeInputStream.close(); |
| } |
| finally |
| { |
| for (QpidByteBuffer buffer : _buffers) |
| { |
| buffer.dispose(); |
| } |
| } |
| } |
| } |