tFilterRow (Advanced mode/Java code) - Syntax issues !!

[Anonymous]

Hi everyone,
I have syntax issues in a tFilterRow (Java code in advanced mode).
I'd like to add these 2 conditions (with a "OR") :
1. Filtering only rows that end with "01" (type: String). What is the syntax for RegEx ? 
OR (||)
2. Filtering the first row (but once again I don't know the syntax for that. Is there a "first" function ?)
Thanks in advance for your reply

[Anonymous]

Add a sequence id for each row, to do it:
add a new column called id in the output table on tMap, and set its expression as 
Numeric.sequence("s1",1,1)

Then, you are able to filter the first row in the advanced model filed of  tFilterRow component, eg:
input_row.id==1||input_row.columnName.substring(input_row.columnName.length()-2).equals("01")