CSV

To declare that a type should be read/written as CSV, add the com.flow.formats.Csv annotation to a model:

import flow.formats.Csv

@Csv
model Person {
  firstName : FirstName inherits String
}

CSV options

The following options are available:

Parameter name Description Default value

Parameter name	Description	Default value
delimiter	The delimiter between records	`,`
firstRecordAsHeader	Indicates if the first record should be read as a header	`true`
nullValue	Specify a custom string to be read as `null`
containsTrailingDelimiters	Indicates if each row contains a delimiter which should be ignored	`false`
quoteChar	Specifies which character should be read as a quoting character	`"`

delimiter

The delimiter between records

,

firstRecordAsHeader

Indicates if the first record should be read as a header

true

nullValue

Specify a custom string to be read as null

containsTrailingDelimiters

Indicates if each row contains a delimiter which should be ignored

false

quoteChar

Specifies which character should be read as a quoting character

"

For example:

import flow.formats.Csv

@Csv(
  delimiter = "|",
  nullValue = "NULL"
)
model Person {
  firstName : String
  lastName : String
  age : Int
}