| /* |
| * 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.cassandra.io.util; |
| |
| import java.io.IOException; |
| import java.nio.BufferOverflowException; |
| import java.nio.ByteBuffer; |
| |
| |
| /** |
| * An implementation of the DataOutputStream interface using a FastByteArrayOutputStream and exposing |
| * its buffer so copies can be avoided. This version does not expand if it runs out of capacity and |
| * throws BufferOverflowException instead. |
| * |
| * This class is completely thread unsafe. |
| */ |
| public class DataOutputBufferFixed extends DataOutputBuffer |
| { |
| public DataOutputBufferFixed() |
| { |
| this(128); |
| } |
| |
| public DataOutputBufferFixed(int size) |
| { |
| super(size, null); |
| } |
| |
| public DataOutputBufferFixed(ByteBuffer buffer) |
| { |
| super(buffer, null); |
| } |
| |
| @Override |
| protected void doFlush(int count) throws IOException |
| { |
| throw new BufferOverflowException(); |
| } |
| |
| /* |
| * Not currently reachable (all paths hit doFLush first), but in the spirit of things this should throw |
| * if it is called. |
| * @see org.apache.cassandra.io.util.DataOutputBuffer#reallocate(long) |
| */ |
| @Override |
| protected void reallocate(long newSize) |
| { |
| throw new BufferOverflowException(); |
| } |
| |
| public void clear() |
| { |
| buffer.clear(); |
| } |
| } |