Question

I need a way to find these in grails:

1) I have two dates say start and end.

2) User selects two dates in the browser say them userStartDate and userEndDate.

I have all these values, but I need to write a query that do find that both start and end falls between userStartDate and userEndDate.

For example, March 2nd and March 3rd falls between March 1st and March 4th. Given that :

March 2nd and March 3rd are userStartDate and userEndDate dates respectively

March 1st and March 4th are start and end respectively. (they are domain objects).

I have this code which works for between cases i.e start is in between userStartDate and userEndDate like so :

  test = Holiday.createCriteria().list {
            and {
                   user {
                       eq('username',username)
                   }
                   or {
                   between('start',userStartDate,userEndDate) 
                   between('end',userStartDate,userEndDate)
               }
            }
        }

As according to my question, how can attach that part into my code?

Thanks in advance.

Answer 1

Assuming that you already do a check that userStartDate is before userEndDate (validated when the user selects) and that start is before end in the database (validated when inserting), the criteria query should look something like this:

test = Holiday.createCriteria().list {
    user { eq('username',username) }
    lt('start', userStartDate)
    gt('end', userEndDate)
}

This checks that start is less than (i.e. before) userStartDate and that end is greater than (i.e. after) userEndDate. There is also no need to wrap in an and block since all clauses are implicitly and-ed.