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.asterix.column.values;
  
  import java.io.DataInput;
  import java.io.IOException;
  
  import org.apache.asterix.column.metadata.PathInfoSerializer;
  import org.apache.asterix.om.types.ATypeTag;
  
  public interface IColumnValuesReaderFactory {
      /**
       * Create reader for a non-repeated primitive type
       *
       * @param typeTag     primitive type tag
       * @param columnIndex column index
       * @param maxLevel    maximum definition levels
       * @param primaryKey  is the value belongs to a primary key?
       * @return columnar reader
       */
      IColumnValuesReader createValueReader(ATypeTag typeTag, int columnIndex, int maxLevel, boolean primaryKey);
  
      /**
       * Create a reader for a repeated primitive type
       *
       * @param typeTag     primitive type tag
       * @param columnIndex column index
       * @param maxLevel    maximum definition levels
       * @param delimiters  the definition levels for array delimiters
       * @return columnar reader
       */
      IColumnValuesReader createValueReader(ATypeTag typeTag, int columnIndex, int maxLevel, int[] delimiters);
  
      /**
       * Create a reader from a serialized path info
       *
       * @param input column metadata info
       * @return columnar reader
       * @see PathInfoSerializer#writePathInfo(ATypeTag, int, boolean) how it serializes the path info
       */
      IColumnValuesReader createValueReader(DataInput input) throws IOException;
  }
  