hive-ormlite

Light Weight ORM which convert Hive Table records on HDFS to an Java object using annotation.

Usage:

Lets assume you have following table in Hive

hive> describe student; OK name string age int phoneno double subject array numbers map<string,int> size structst:string union uniontype<int,string>

To Map Java Student class, following is class information: Using Student Class assuming thrift server is running on machine 10.0.0.1 and port 9083

public class Main 
{

 public static void main(String args[]) throws TException, DbConfigAnnotaionMissingException, InstantiationException, IllegalAccessException, FactoryInstantiationException {
      HiveBuilderFactory hiveBuilderFactory = HiveBuilderFactory.Instance("thrift://10.0.0.1:9083");
      Text studentRecords = new Text("Akash,1,7798987147,,,");
      Student student = hiveBuilderFactory.deSerialize(Student.class, studentRecords);
      System.out.println(student.age);
      System.out.println(student.phoneNo);
      System.out.println(student.name);
      System.out.println(student.subject);
 }

  @HiveDbConfig(db="test",table ="student")
  public class Student {

    String name;
    Integer age;
    Double phoneNo;
    String subject;
    String numbers;
    String size;
    String uni;
  }
}

This will result in output

1 7.798987147E9 Akash null