Groovy GroupBy field with and without white spaces

Question

I have invoices list as below

def invoices = [
\'LEDES98BI V2\',
\'LINE|INVOICE_DATE|INVOICE_NUMBER|INVOICE_TOTAL\',
\'1|20150301|INV-Error_Test1|22\',
\'2|2         


        

Answer 1

You just need to quote your name, like this

def invoiceMap = lines.tail().collect{ [heads, it].transpose().collectEntries() }.groupBy{ it.'INVOICE NUMBER' }

Answer 2

Use a proper CSV parser, rather than rolling your own.

@Grab('com.xlson.groovycsv:groovycsv:1.0')
import static com.xlson.groovycsv.CsvParser.parseCsv

def invoices = [
'LEDES98BI V2',
'LINE|INVOICE_DATE|INVOICE_NUMBER|INVOICE_TOTAL',
'1|20150301|INV-Error_Test1|22',
'2|20150301|INV-Error_Test1|24',
'3|20150301|INV-Error_Test2|26',
'4|20150301|INV-Error_Test2|28,']

def data = parseCsv(invoices.drop(1).join('\n'), separator:'|')
def invoiceMap = data.collect().groupBy { it.INVOICE_NUMBER }

Or with a space in the column title:

def invoices = [
'LEDES98BI V2',
'LINE|INVOICE_DATE|INVOICE NUMBER|INVOICE_TOTAL',
'1|20150301|INV-Error_Test1|22',
'2|20150301|INV-Error_Test1|24',
'3|20150301|INV-Error_Test2|26',
'4|20150301|INV-Error_Test2|28,']

def data = parseCsv(invoices.drop(1).join('\n'), separator:'|')
def invoiceMap = data.collect().groupBy { it.'INVOICE NUMBER' }