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 org.apache.arrow.vector.ValueVector;
  
  /**
   * Base class for all consumers.
   *
   * @param <V> vector type.
   */
  public abstract class BaseConsumer<V extends ValueVector> implements JdbcConsumer<V> {
  
    protected V vector;
  
    protected final int columnIndexInResultSet;
  
    protected int currentIndex;
  
    /**
     * Constructs a new consumer.
     *
     * @param vector the underlying vector for the consumer.
     * @param index the column id for the consumer.
     */
    public BaseConsumer(V vector, int index) {
      this.vector = vector;
      this.columnIndexInResultSet = index;
    }
  
    @Override
    public void close() throws Exception {
      this.vector.close();
    }
  
    @Override
    public void resetValueVector(V vector) {
      this.vector = vector;
      this.currentIndex = 0;
    }
  }
  