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.hive.service.cli;
  
  import org.apache.hadoop.hive.metastore.api.FieldSchema;
  import org.apache.hive.service.cli.thrift.TColumnDesc;
  
  
  /**
   * ColumnDescriptor.
   *
   */
  public class ColumnDescriptor {
    private final String name;
    private final String comment;
    private final TypeDescriptor type;
    // ordinal position of this column in the schema
    private final int position;
  
    public ColumnDescriptor(String name, String comment, TypeDescriptor type, int position) {
      this.name = name;
      this.comment = comment;
      this.type = type;
      this.position = position;
    }
  
    public ColumnDescriptor(TColumnDesc tColumnDesc) {
      name = tColumnDesc.getColumnName();
      comment = tColumnDesc.getComment();
      type = new TypeDescriptor(tColumnDesc.getTypeDesc());
      position = tColumnDesc.getPosition();
    }
  
    public ColumnDescriptor(FieldSchema column, int position) {
      name = column.getName();
      comment = column.getComment();
      type = new TypeDescriptor(column.getType());
      this.position = position;
    }
  
    public static ColumnDescriptor newPrimitiveColumnDescriptor(String name, String comment, Type type, int position) {
      // Current usage looks like it's only for metadata columns, but if that changes then
      // this method may need to require a type qualifiers aruments.
      return new ColumnDescriptor(name, comment, new TypeDescriptor(type), position);
    }
  
    public String getName() {
      return name;
    }
  
    public String getComment() {
      return comment;
    }
  
    public TypeDescriptor getTypeDescriptor() {
      return type;
    }
  
    public int getOrdinalPosition() {
      return position;
    }
  
    public TColumnDesc toTColumnDesc() {
      TColumnDesc tColumnDesc = new TColumnDesc();
      tColumnDesc.setColumnName(name);
      tColumnDesc.setComment(comment);
      tColumnDesc.setTypeDesc(type.toTTypeDesc());
      tColumnDesc.setPosition(position);
      return tColumnDesc;
    }
  
    public Type getType() {
      return type.getType();
    }
  
    public boolean isPrimitive() {
      return type.getType().isPrimitiveType();
    }
  
    public String getTypeName() {
      return type.getTypeName();
    }
  }
  