Generate RC file from Java code

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.TreeMap;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.ql.io.RCFile;
import org.apache.hadoop.hive.serde.serdeConstants;
import org.apache.hadoop.hive.serde2.SerDeException;
import org.apache.hadoop.hive.serde2.SerDeUtils;
import org.apache.hadoop.hive.serde2.columnar.BytesRefArrayWritable;
import org.apache.hadoop.hive.serde2.columnar.ColumnarSerDe;
import org.apache.hadoop.hive.serde2.columnar.LazyBinaryColumnarSerDe;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorFactory;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorFactory.ObjectInspectorOptions;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils;
import org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector;

public class RCComplexTypeWriter {
 private static class Identity {
 String ssn;
 String address;
   public Identity(String ssn, String address) {
     this.ssn = ssn;
     this.address = address;
   }
 }

 private static class Person {
   String name;
   Map<String, List<String>> contactInfo;
   List<Identity> parents;
   Map<String, Identity> relatives;
   Identity identity;
 }

 public void buildAndSaveFile(Configuration conf, String path) {
   StructObjectInspector oi = (StructObjectInspector) ObjectInspectorFactory
           .getReflectionObjectInspector(Person.class, ObjectInspectorOptions.JAVA);
       String cols = ObjectInspectorUtils.getFieldNames(oi);
       Properties props = new Properties();
       props.setProperty(serdeConstants.LIST_COLUMNS, cols);
       props.setProperty(serdeConstants.LIST_COLUMN_TYPES, ObjectInspectorUtils.getFieldTypes(oi));
       ColumnarSerDe serde;
       try {
        serde = new ColumnarSerDe();
serde.initialize(new Configuration(), props);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return;
}

       Person outerStruct = new Person();
       outerStruct.name = "Steven Washington";
       List array1 = new ArrayList<String>();
       array1.add("583-195-1121");
       array1.add("583-195-1122");
       array1.add("583-195-1123");
       array1.add("583-195-1124");
       List array2 = new ArrayList<String>();
       array2.add("john@yahoooo.com");
       array2.add("mary@yahoooo.com");
       array2.add("mark@yahoooo.com");
       outerStruct.contactInfo =  new TreeMap<String, List<String>>();
       outerStruct.contactInfo.put("Phone", array1);
       outerStruct.contactInfo.put("Email", array2);
       Identity is1 = new Identity("383-19-1111", "123 Fremont Blvd, Fremont CA 94555");
       Identity is2 = new Identity("383-19-1112", "124 Fremont Blvd, Fremont CA 94555");
       outerStruct.parents = new ArrayList<Identity>(2);
       outerStruct.parents.add(is1);
       outerStruct.parents.add(is2);
       outerStruct.relatives = new TreeMap<String, Identity>();
       outerStruct.relatives.put(new String("Uncle"), new Identity("383-19-8881", "223 Fremont Blvd, Fremont CA 94555"));
       outerStruct.relatives.put(new String("FatherInLaw"), new Identity("383-19-8882", "224 Fremont Blvd, Fremont CA 94555"));
       outerStruct.identity = new Identity("383-19-9991", "111 Fremont Blvd, Fremont CA 94555");
       try {
BytesRefArrayWritable braw = (BytesRefArrayWritable) serde.serialize(outerStruct, oi);
System.out.println("Row is [" + braw.toString() + "]");
int numColumns = braw.size();
System.out.println("Write file with " + numColumns + " columns...");
conf.set(RCFile.COLUMN_NUMBER_CONF_STR, String.valueOf(numColumns)); final FileSystem fs = FileSystem.get(conf);
RCFile.Writer rcWriter = new RCFile.Writer(fs, conf, new Path(path));

rcWriter.append(braw);
rcWriter.close();
System.out.println("Write " + numColumns + " columns successfullly.");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return;
}
 }
}