parquet-column/src/main/java/parquet/io/PrimitiveColumnIO.java

/**
 * Copyright 2012 Twitter, Inc.
 *
 * Licensed 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 parquet.io;


import java.util.Arrays;
import java.util.List;

import parquet.column.ColumnDescriptor;
import parquet.schema.Type;
import parquet.schema.PrimitiveType;
import parquet.schema.PrimitiveType.PrimitiveTypeName;


/**
 * Primitive level of the IO structure
 *
 *
 * @author Julien Le Dem
 *
 */
public class PrimitiveColumnIO extends ColumnIO {
//  private static final Logger logger = Logger.getLogger(PrimitiveColumnIO.class.getName());

  private ColumnIO[] path;
  private ColumnDescriptor columnDescriptor;
  private final int id;

  PrimitiveColumnIO(Type type, GroupColumnIO parent, int index, int id) {
    super(type, parent, index);
    this.id = id;
  }

  @Override
  void setLevels(int r, int d, String[] fieldPath, int[] fieldIndexPath, List<ColumnIO> repetition, List<ColumnIO> path) {
    super.setLevels(r, d, fieldPath, fieldIndexPath, repetition, path);
    PrimitiveType type = getType().asPrimitiveType();
    this.columnDescriptor = new ColumnDescriptor(
        fieldPath, 
        type.getPrimitiveTypeName(),
        type.getTypeLength(),
        getRepetitionLevel(), 
        getDefinitionLevel());
    this.path = path.toArray(new ColumnIO[path.size()]);
  }

  @Override
  List<String[]> getColumnNames() {
    return Arrays.asList(new String[][] { getFieldPath() });
  }

  public ColumnDescriptor getColumnDescriptor() {
    return columnDescriptor;
  }

  public ColumnIO[] getPath() {
    return path;
  }

  public boolean isLast(int r) {
    return getLast(r) == this;
  }

  private PrimitiveColumnIO getLast(int r) {
    ColumnIO parent = getParent(r);

    PrimitiveColumnIO last = parent.getLast();
    return last;
  }

  @Override
  PrimitiveColumnIO getLast() {
    return this;
  }

  @Override
  PrimitiveColumnIO getFirst() {
    return this;
  }
  public boolean isFirst(int r) {
    return getFirst(r) == this;
  }

  private PrimitiveColumnIO getFirst(int r) {
    ColumnIO parent = getParent(r);
    return parent.getFirst();
  }

  public PrimitiveTypeName getPrimitive() {
    return getType().asPrimitiveType().getPrimitiveTypeName();
  }

  public int getId() {
    return id;
  }

}