Grails: save parsed csv data to database - csv

Question

I have successfully parsed by csv using grails plugin. Now the output looks like:
This is how i parsed the csvFile. I need to save this csv contents to database.How can i do this?
def upload = {
def f = request.getFile('filecsv')
if (f.empty) {
flash.message = 'file cannot be empty'
render(view: 'uploadForm')
return
} else {
def file = request.getFile('filecsv')
def singlerow = file.inputStream.toCsvReader(['charset': 'UTF-8', 'separatorChar': '|']).eachLine{
line ->
println "The data are"+line
}
}
}
Output looks like
The data are[test, 2017-08-21, , , 2017-08-21, 100, 8668a73e55e0824c130337d49f0fc746, , Annual, , , , , , , , , , , , , , , , , , , , , test, 1111, test, test, 1901-03-13, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , asd/asd/sad/incentive/20170906/09062017.csv, 2017-09-06, , 4.7, 30430001]
The data are[test, 2017-10-07, , , 2017-08-07, 100, asdasdasdasd, , An, , , , , , , , , , , , , , , , , , , , , test, 1111, test, test, 1900-02-15, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , stat/test/test/incentive/20170906/ 09072017.csv, 2017-09-06, , 4.7, 30430001]
My domain class:
class Data {
String data1
Date data12
Date data13
Date data14
Date data15
String data16
String data17
String data18
String data19
String data110
String data111
String data112
String data113
String data114
String data115
String data115
String data116
String data117
String data118
String data119
String data120
_____________
__________
___________
}
How can i save this to database of this domain class.

Answer 1

Without knowing other details, the easiest way to save such domain instances I can think of is:
static dates = [ 11, 12, 13, 14 ] // positions of fields to be converted to Date
def upload = {
//...
file.inputStream.toCsvReader(['charset': 'UTF-8', 'separatorChar': '|']).eachLine{ line ->
def map = [:]
line.eachWithWithIndex{ d, ix ->
// if( d ) map[ "data${ix+1}" ] = dates.contains( ix ) ? Date.parse( 'yyyy-MM-dd', d ) : d
if( d ) map[ "data${ix+1}" ] = d // if you need no date conversion
}
Data data = new Data( map )
if( !data.save() ) log.warn "save failed: $data.errors"
}
}