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.sql.ResultSet;
  import java.sql.SQLException;
  import org.apache.arrow.vector.SmallIntVector;
  
  /**
   * Consumer which consume smallInt type values from {@link ResultSet}. Write the data to {@link
   * org.apache.arrow.vector.SmallIntVector}.
   */
  public class SmallIntConsumer {
  
    /** Creates a consumer for {@link SmallIntVector}. */
    public static BaseConsumer<SmallIntVector> createConsumer(
        SmallIntVector vector, int index, boolean nullable) {
      if (nullable) {
        return new NullableSmallIntConsumer(vector, index);
      } else {
        return new NonNullableSmallIntConsumer(vector, index);
      }
    }
  
    /** Nullable consumer for small int. */
    static class NullableSmallIntConsumer extends BaseConsumer<SmallIntVector> {
  
      /** Instantiate a SmallIntConsumer. */
      public NullableSmallIntConsumer(SmallIntVector vector, int index) {
        super(vector, index);
      }
  
      @Override
      public void consume(ResultSet resultSet) throws SQLException {
        short value = resultSet.getShort(columnIndexInResultSet);
        if (!resultSet.wasNull()) {
          // for fixed width vectors, we have allocated enough memory proactively,
          // so there is no need to call the setSafe method here.
          vector.set(currentIndex, value);
        }
        currentIndex++;
      }
    }
  
    /** Non-nullable consumer for small int. */
    static class NonNullableSmallIntConsumer extends BaseConsumer<SmallIntVector> {
  
      /** Instantiate a SmallIntConsumer. */
      public NonNullableSmallIntConsumer(SmallIntVector vector, int index) {
        super(vector, index);
      }
  
      @Override
      public void consume(ResultSet resultSet) throws SQLException {
        short value = resultSet.getShort(columnIndexInResultSet);
        // for fixed width vectors, we have allocated enough memory proactively,
        // so there is no need to call the setSafe method here.
        vector.set(currentIndex, value);
        currentIndex++;
      }
    }
  }
  