org.apache.avro.util.NonCopyingByteArrayOutputStream Maven / Gradle / Ivy
/*
* 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
*
* https://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.avro.util;
import java.io.ByteArrayOutputStream;
import java.nio.ByteBuffer;
/**
* Utility to make data written to an {@link ByteArrayOutputStream} directly
* available as a {@link ByteBuffer}.
*/
public class NonCopyingByteArrayOutputStream extends ByteArrayOutputStream {
/**
* Creates a new byte array output stream, with a buffer capacity of the
* specified size, in bytes.
*
* @param size the initial size
* @throws IllegalArgumentException if size is negative
*/
public NonCopyingByteArrayOutputStream(int size) {
super(size);
}
/**
* Get the contents of this ByteArrayOutputStream wrapped as a ByteBuffer. This
* is a shallow copy. Changes to this ByteArrayOutputstream "write through" to
* the ByteBuffer.
*
* @return The contents of this ByteArrayOutputstream wrapped as a ByteBuffer
*/
public ByteBuffer asByteBuffer() {
return ByteBuffer.wrap(super.buf, 0, super.count);
}
}