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.producers;
  
  import java.io.IOException;
  import org.apache.arrow.vector.FieldVector;
  import org.apache.avro.io.Encoder;
  
  /**
   * Interface that is used to produce values to avro encoder.
   *
   * @param <T> The vector within producer or its delegate, used for partially produce purpose.
   */
  public interface Producer<T extends FieldVector> {
  
    /**
     * Produce a specific type value from the vector and write it to avro encoder.
     *
     * @param encoder avro encoder to write data
     * @throws IOException on error
     */
    void produce(Encoder encoder) throws IOException;
  
    /** Skip null value in the vector by setting reader position + 1. */
    void skipNull();
  
    /** Set the position to read value from vector. */
    void setPosition(int index);
  
    /** Reset the vector within producer. */
    void resetValueVector(T vector);
  
    /** Get the vector within the producer. */
    T getVector();
  }
  