利用hadoop命令rcc生成Record 一种简单的方式实现自定义的writable对象

>rcc
Usage: rcc --language [java|c++] ddl-files

>vim stud.ddl 
module  com.xschao.bean {
   class Stud{
        ustring name;
        long id;
        int age;
        ustring time;
        }
}
 

> rcc --language java stud.ddl

>tree 
.
|-- com
|   `-- xschao
|       `-- bean
|           `-- Stud.java
|-- command_example.sh
`-- stud.ddl
3 directories, 3 files

// File generated by hadoop record compiler. Do not edit.
package com.xschao.bean;
public class Stud extends org.apache.hadoop.record.Record {
  private static final org.apache.hadoop.record.meta.RecordTypeInfo _rio_recTypeInfo;
  private static org.apache.hadoop.record.meta.RecordTypeInfo _rio_rtiFilter;
  private static int[] _rio_rtiFilterFields;
  static {
    _rio_recTypeInfo = new org.apache.hadoop.record.meta.RecordTypeInfo("Stud");
    _rio_recTypeInfo.addField("name", org.apache.hadoop.record.meta.TypeID.StringTypeID);
    _rio_recTypeInfo.addField("id", org.apache.hadoop.record.meta.TypeID.LongTypeID);
    _rio_recTypeInfo.addField("age", org.apache.hadoop.record.meta.TypeID.IntTypeID);
    _rio_recTypeInfo.addField("time", org.apache.hadoop.record.meta.TypeID.StringTypeID);
  }
  
  private String name;
  private long id;
  private int age;
  private String time;
  public Stud() { }
  public Stud(
    final String name,
    final long id,
    final int age,
    final String time) {
    this.name = name;
    this.id = id;
    this.age = age;
    this.time = time;
  }
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