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.jdbc.consumer;
  
  import java.io.IOException;
  import java.sql.Blob;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import org.apache.arrow.vector.VarBinaryVector;
  
  /**
   * Consumer which consume blob type values from {@link ResultSet}. Write the data to {@link
   * VarBinaryVector}.
   */
  public class BlobConsumer extends BaseConsumer<VarBinaryVector> {
  
    private BinaryConsumer delegate;
  
    private final boolean nullable;
  
    /** Creates a consumer for {@link VarBinaryVector}. */
    public static BlobConsumer createConsumer(BinaryConsumer delegate, int index, boolean nullable) {
      return new BlobConsumer(delegate, index, nullable);
    }
  
    /** Instantiate a BlobConsumer. */
    public BlobConsumer(BinaryConsumer delegate, int index, boolean nullable) {
      super(null, index);
      this.delegate = delegate;
      this.nullable = nullable;
    }
  
    @Override
    public void consume(ResultSet resultSet) throws SQLException, IOException {
      Blob blob = resultSet.getBlob(columnIndexInResultSet);
      if (blob != null) {
        delegate.consume(blob.getBinaryStream());
      }
      delegate.moveWriterPosition();
    }
  
    @Override
    public void close() throws Exception {
      delegate.close();
    }
  
    @Override
    public void resetValueVector(VarBinaryVector vector) {
      delegate = BinaryConsumer.createConsumer(vector, columnIndexInResultSet, nullable);
    }
  }
  