| // 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.impala.util; |
| |
| import org.apache.thrift.transport.TTransport; |
| import org.apache.thrift.transport.TTransportException; |
| import java.nio.BufferUnderflowException; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * ByteBuffer-backed implementation of TTransport. This is copied from thrift 0.10.0. |
| * TODO: Upgrade thrift to 0.10.0 or higher and remove this file. |
| */ |
| public final class TByteBuffer extends TTransport { |
| private final ByteBuffer byteBuffer; |
| |
| public TByteBuffer(ByteBuffer byteBuffer) { this.byteBuffer = byteBuffer; } |
| |
| @Override |
| public boolean isOpen() { return true; } |
| |
| @Override |
| public void open() {} |
| |
| @Override |
| public void close() {} |
| |
| @Override |
| public int read(byte[] buf, int off, int len) throws TTransportException { |
| final int n = Math.min(byteBuffer.remaining(), len); |
| if (n > 0) { |
| try { |
| byteBuffer.get(buf, off, n); |
| } catch (BufferUnderflowException e) { |
| throw new TTransportException("Unexpected end of input buffer", e); |
| } |
| } |
| return n; |
| } |
| |
| @Override |
| public void write(byte[] buf, int off, int len) throws TTransportException { |
| throw new TTransportException("Write is not supported by TByteBuffer"); |
| } |
| } |