1: import java.util.ArrayList;

   2:

   3: import org.apache.hadoop.hive.ql.udf.generic.GenericUDTF;

   4: import org.apache.hadoop.hive.ql.exec.UDFArgumentException;

   5: import org.apache.hadoop.hive.ql.exec.UDFArgumentLengthException;

   6: import org.apache.hadoop.hive.ql.metadata.HiveException;

   7: import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;

   8: import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorFactory;

   9: import org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector;

  10: import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;

  11:

  12: public class ExplodeMap extends GenericUDTF{

  13:

  14:     @Override

  15:     public void close() throws HiveException {

  16:         // TODO Auto-generated method stub    

  17:     }

  18:

  19:     @Override

  20:     public StructObjectInspector initialize(ObjectInspector[] args)

  21:             throws UDFArgumentException {

  22:         if (args.length != 1) {

  23:             throw new UDFArgumentLengthException("ExplodeMap takes only one argument");

  24:         }

  25:         if (args[0].getCategory() != ObjectInspector.Category.PRIMITIVE) {

  26:             throw new UDFArgumentException("ExplodeMap takes string as a parameter");

  27:         }

  28:

  29:         ArrayList fieldNames = new ArrayList();

  30:         ArrayList fieldOIs = new ArrayList();

  31:         fieldNames.add("col1");

  32:         fieldOIs.add(PrimitiveObjectInspectorFactory.javaStringObjectInspector);

  33:         fieldNames.add("col2");

  34:         fieldOIs.add(PrimitiveObjectInspectorFactory.javaStringObjectInspector);

  35:

  36:         return ObjectInspectorFactory.getStandardStructObjectInspector(fieldNames,fieldOIs);

  37:     }

  38:

  39:     @Override

  40:     public void process(Object[] args) throws HiveException {

  41:         String input = args[0].toString();

  42:         String[] test = input.split(";");

  43:         for(int i=0; i

  44:             try {

  45:                 String[] result = test[i].split(":");

  46:                 forward(result);

  47:             } catch (Exception e) {

  48:                 continue;

  49:             }

  50:         }

  51:     }

  52: }