Adding information from one JsonBuilder object to another - json

Question

As the title suggests, I'm trying to add information held in one JsonBuilder object to a second JsonBuilder object.
Currently I have this:
public String buildOneUser(DyveUserDTO user)
{
def userBuilder = new JsonBuilder()
userBuilder user.collect { usr ->
[
'Name': usr.userName,
'Allowance': usr.allowance,
'Total Holidays in Calendar': usr.totalHolidaysInCal,
'Holidays Booked': usr.numHolidaysBooked,
'Holidays Taken': usr.numHolidaysTaken,
'Holidays Remaining': usr.totalHolidaysLeft
]
}
def userHolidayBuilder = new JsonBuilder()
userHolidayBuilder user.holidayEvents.collect { usr ->
[
'Start Date': usr.startDate,
'End Date': usr.endDate,
'Days': usr.days
]
}
def userAndHolidays = userBuilder + userHolidayBuilder
return userAndHolidays.toPrettyString()
}
user.holidayEvents is a list of objects representing holidays and it could be empty or have any number of objects in it. This made me hesitant of doing something like:
def userBuilder = new JsonBuilder()
userBuilder user.collect { usr ->
[
'Name': usr.userName,
'Allowance': usr.allowance,
'Total Holidays in Calendar': usr.totalHolidaysInCal,
'Holidays Booked': usr.numHolidaysBooked,
'Holidays Taken': usr.numHolidaysTaken,
'Holidays Remaining': usr.totalHolidaysLeft
'Holiday': usr.holidayEvents[0].startDate
'Holiday': usr.holidayEvents[0].endDate
'Holiday': usr.holidayEvents[0].days
]
}
As I would only get the amount of holidays I write code for. It would also throw an exception if a user had no holidays and I told it look at usr.holidayEvents[1] as it's outside of the list range.
I've also tried nesting a .collect like this
def userBuilder = new JsonBuilder()
userBuilder {
'Name' user.userName,
'Allowance' user.allowance,
'Total Holidays in Calendar' user.totalHolidaysInCal,
'Holidays Booked' user.numHolidaysBooked,
'Holidays Taken' user.numHolidaysTaken,
'Holidays Remaining' user.totalHolidaysLeft,
'Holidays' user.holidayEvents.collect{ evt ->
[
'Start Date': evt.startDate,
'End Date': evt.endDate,
'Days': evt.days
]
}
}
But this returned all the keys except the Holidays key.
Any help would be greatly appreciated!
EDIT - My code now looks like this:
public String buildOneUser(DyveUserDTO user)
{
def userBuilder = new JsonBuilder()
userBuilder user.collect { usr ->
[
'Name': usr.userName,
'Allowance': usr.allowance,
'Total Holidays in Calendar': usr.totalHolidaysInCal,
'Holidays Booked': usr.numHolidaysBooked,
'Holidays Taken': usr.numHolidaysTaken,
'Holidays Remaining': usr.totalHolidaysLeft,
'Holidays': usr.holidayEvents.collect{ evt ->
[
'Start Date': evt.startDate,
'End Date': evt.endDate,
'Days': evt.days
]
}
]
}
}
EDIT 2 - Sample Code
Method to call:
public String buildOneUser(DyveUserDTO user)
{
def userBuilder = new JsonBuilder()
userBuilder {
Name:
user.userName
Allowance:
user.allowance
TotalHolidaysInCalendar:
user.totalHolidaysInCal
HolidaysBooked:
user.numHolidaysBooked
HolidaysTaken:
user.numHolidaysTaken
HolidaysRemaining:
user.totalHolidaysLeft
Holidays:
user.holidayEvents.collect { evt ->
[
'Start Date': evt.startDate,
'End Date' : evt.endDate,
'Days' : evt.days
]
}
}
return userBuilder.toPrettyString()
}
User to pass in:
class DyveUserDTO
{
String firstName = "Foo"
String userName = "FooBar"
Integer userID = 42
BigDecimal numHolidaysBooked = 3
BigDecimal numHolidaysTaken = 0
BigDecimal totalHolidaysInCal = 3
BigDecimal totalHolidaysLeft = 12
BigDecimal allowance = 12
List<HolidayObject> holidayEvents = []
}
Holiday objects to go in holidayEvents:
class HolidayObject
{
public Integer userID = 42
public String title = "Foo Holiday"
public String event = "Holiday"
public String amPm = "Full Day"
public String name = "Foo"
public LocalDateTime startDate = LocalDateTime.parse(2015-02-20T00:00:00)
public LocalDateTime endDate = LocalDateTime.parse(2015-02-20T00:00:00)
public BigDecimal days = 1
}
class HolidayObject
{
public Integer userID = 42
public String title = "Foo Holiday Pm"
public String event = "Holiday"
public String amPm = "Pm"
public String name = "Foo"
public LocalDateTime startDate = LocalDateTime.parse(2015-02-23T00:00:00)
public LocalDateTime endDate = LocalDateTime.parse(2015-02-24T00:00:00)
public BigDecimal days = 2
}

Answer 1

each just returns the list it's called upon, collect should be used for events. See the working code below:
import groovy.json.JsonBuilder
class UserEvent {
def start
def end
def days
}
class User {
def name
def events
}
def u1 = new User(name: 'u1', events: [new UserEvent(start: 0, end: 1, days: 1), new UserEvent(start: 0, end: 2, days: 2)])
def u2 = new User(name: 'u2', events: [new UserEvent(start: 0, end: 3, days: 3)])
def users = [u1, u2]
def userBuilder = new JsonBuilder()
userBuilder users.collect { usr ->
[
'name': usr.name,
'events': usr.events.collect { e ->
[
start: e.start,
end: e.end,
days: e.days,
]
}
]
}
print userBuilder.toPrettyString()
EDIT
Below is a working example:
import groovy.json.JsonBuilder
user = new DyveUserDTO()
def userBuilder = new JsonBuilder()
userBuilder {
Name user.userName
Allowance user.allowance
TotalHolidaysInCalendar user.totalHolidaysInCal
HolidaysBooked user.numHolidaysBooked
HolidaysTaken user.numHolidaysTaken
HolidaysRemaining user.totalHolidaysLeft
Holidays user.holidayEvents.collect { evt ->
[
'Start Date': evt.startDate,
'End Date' : evt.endDate,
'Days' : evt.days
]
}
}
println userBuilder.toPrettyString()
class DyveUserDTO {
String firstName = "Foo"
String userName = "FooBar"
Integer userID = 42
BigDecimal numHolidaysBooked = 3
BigDecimal numHolidaysTaken = 0
BigDecimal totalHolidaysInCal = 3
BigDecimal totalHolidaysLeft = 12
BigDecimal allowance = 12
List<HolidayObject> holidayEvents = [new HolidayObject(), new HolidayObject()]
}
class HolidayObject {
public Integer userID = 42
public String title = "Foo Holiday"
public String event = "Holiday"
public String amPm = "Full Day"
public String name = "Foo"
public String startDate = '2015-02-20T00:00:00'
public String endDate = '2015-02-20T00:00:00'
public BigDecimal days = 1
}
No colons : needed. See the sample here. Also I have no Joda dependency so replaced with String.