content: /*
   * 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.arrow.memory;
  
  /**
   * A lightweight, automatically expanding container for holding byte data.
   *
   * @param <T> The type of the underlying buffer.
   */
  public interface ReusableBuffer<T> {
    /**
     * Get the number of valid bytes in the data.
     *
     * @return the number of valid bytes in the data
     */
    long getLength();
  
    /** Get the buffer backing this ReusableBuffer. */
    T getBuffer();
  
    /**
     * Set the buffer to the contents of the given ArrowBuf. The internal buffer must resize if it
     * cannot fit the contents of the data.
     *
     * @param srcBytes the data to copy from
     * @param start the first position of the new data
     * @param len the number of bytes of the new data
     */
    void set(ArrowBuf srcBytes, long start, long len);
  
    void set(byte[] srcBytes, long start, long len);
  }
  