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.adapter.avro.consumers.logical;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  import org.apache.arrow.adapter.avro.consumers.BaseAvroConsumer;
  import org.apache.arrow.util.Preconditions;
  import org.apache.arrow.vector.Decimal256Vector;
  import org.apache.avro.io.Decoder;
  
  /**
   * Consumer which consume 256-bit decimal type values from avro decoder. Write the data to {@link
   * Decimal256Vector}.
   */
  public abstract class AvroDecimal256Consumer extends BaseAvroConsumer<Decimal256Vector> {
  
    protected AvroDecimal256Consumer(Decimal256Vector vector) {
      super(vector);
    }
  
    /** Consumer for decimal logical type with 256 bit width and original bytes type. */
    public static class BytesDecimal256Consumer extends AvroDecimal256Consumer {
  
      private ByteBuffer cacheBuffer;
  
      /** Instantiate a BytesDecimal256Consumer. */
      public BytesDecimal256Consumer(Decimal256Vector vector) {
        super(vector);
      }
  
      @Override
      public void consume(Decoder decoder) throws IOException {
        cacheBuffer = decoder.readBytes(cacheBuffer);
        byte[] bytes = new byte[cacheBuffer.limit()];
        Preconditions.checkArgument(bytes.length <= 32, "Decimal bytes length should <= 32.");
        cacheBuffer.get(bytes);
        vector.setBigEndian(currentIndex++, bytes);
      }
    }
  
    /** Consumer for decimal logical type with 256 bit width and original fixed type. */
    public static class FixedDecimal256Consumer extends AvroDecimal256Consumer {
  
      private final byte[] reuseBytes;
  
      /** Instantiate a FixedDecimal256Consumer. */
      public FixedDecimal256Consumer(Decimal256Vector vector, int size) {
        super(vector);
        Preconditions.checkArgument(size <= 32, "Decimal bytes length should <= 32.");
        reuseBytes = new byte[size];
      }
  
      @Override
      public void consume(Decoder decoder) throws IOException {
        decoder.readFixed(reuseBytes);
        vector.setBigEndian(currentIndex++, reuseBytes);
      }
    }
  }
  