Sort according to another field order

Question

say there are 2 input and 2 output fields
The first input field is mapped to the first output field , after grouping similar values together
e.g:
input field1          output field1
a                            a
d                            a
e                            d
c                            d
d                            c
e                            e
a                            e
Now the 2 nd input field has to be mapped to 2nd output field according to the order in which the 1st field has been mapped.
We can not use sortByKey here as the first field is not mapped in lexographical nor numerical order.
How then can we map the 2nd field according to order of first?
Thanks in advance
Pratichi

Answer 1

Hi Pratichi,
The UDF that you are writting to group similar values together for the input field1.
try chaging that  UDF with two arguments
1. inputField1
2. inputField2
use the concept of Edit Java section(Declaring Global variable .To Know more about it refer
http://wiki.sdn.sap.com/wiki/display/stage/UsingEditJavaSectioninMessageMapping)
Declare a Global variable in the Global Variable section as
String[] format = new String[30];
while you are gouping inputField1 ,group inputField2 also and store in the global variable format.
Write one more UDF to read values from the global variable and map it to OutputFiled2.
(you can use same java code as you normally use to store and read values from the string array).
Thanks and Regards,
Kubra fatima.