How to do this with message mapping in PI ?

Please let me know how his can be done in PI

My requirement in pi mapping that I need to do with both the ways with message mapping as well as java udf .

1)Requirement

Column 1     Column 2

Indicator    Batch number

P         6C8

R         6C8

P         6Q7

R         6Q7

P         6Q7

R         6Q7

P         6R1

R         6R1

P         6R1

R         6R1

T         10

If the indicator is P or R the Batch Number value should be passed to target side batch number field .Otherwise if it's T the total number of record should be passed to another field "Record_Count" on the target side .

2)Requirement

Column 1

Column 1     Column 2

Indicator    Amount

P         50173.44

R         78173.41

P         3500000

R         10000

P         1000

R         1000

P         91000

R         950001

P         91000

R         108069.39

T         607069.45

If the indicator is P or R the Amount value should be passed to target side Amount field if the Record indicator is T

the sum of all the Amount should be passed in Amount amount field

Thanks