Grails How to use Date.ClearTime() without affect on Domain Object Value












0















I'm trying to get date without time using following code.



List<Person> personList = Person.createCriteria().list(){
eq("deleted", false)
order("datetime","desc")
}

def dateTimeSet = new HashSet()

personList.each { personInstance ->

Date originalDate = personInstance?.datetime

println("Before Date In Instance: "+personInstance?.datetime)

if(!dateTimeSet.contains(originalDate?.clearTime())){
dateTimeSet.add(originalDate?.clearTime())
}

println("After Date In Instance: "+personInstance?.datetime)

}


OUTPUT:



Before Date In Instance: Thu Sep 20 18:34:11 IST 2018
After Date In Instance: Thu Sep 20 00:00:00 IST 2018


How the personInstance gets updated when I'm using clearTime() in originalDate object.



Let me know how to use clearTime() here without change in domain instance.










share|improve this question



























    0















    I'm trying to get date without time using following code.



    List<Person> personList = Person.createCriteria().list(){
    eq("deleted", false)
    order("datetime","desc")
    }

    def dateTimeSet = new HashSet()

    personList.each { personInstance ->

    Date originalDate = personInstance?.datetime

    println("Before Date In Instance: "+personInstance?.datetime)

    if(!dateTimeSet.contains(originalDate?.clearTime())){
    dateTimeSet.add(originalDate?.clearTime())
    }

    println("After Date In Instance: "+personInstance?.datetime)

    }


    OUTPUT:



    Before Date In Instance: Thu Sep 20 18:34:11 IST 2018
    After Date In Instance: Thu Sep 20 00:00:00 IST 2018


    How the personInstance gets updated when I'm using clearTime() in originalDate object.



    Let me know how to use clearTime() here without change in domain instance.










    share|improve this question

























      0












      0








      0








      I'm trying to get date without time using following code.



      List<Person> personList = Person.createCriteria().list(){
      eq("deleted", false)
      order("datetime","desc")
      }

      def dateTimeSet = new HashSet()

      personList.each { personInstance ->

      Date originalDate = personInstance?.datetime

      println("Before Date In Instance: "+personInstance?.datetime)

      if(!dateTimeSet.contains(originalDate?.clearTime())){
      dateTimeSet.add(originalDate?.clearTime())
      }

      println("After Date In Instance: "+personInstance?.datetime)

      }


      OUTPUT:



      Before Date In Instance: Thu Sep 20 18:34:11 IST 2018
      After Date In Instance: Thu Sep 20 00:00:00 IST 2018


      How the personInstance gets updated when I'm using clearTime() in originalDate object.



      Let me know how to use clearTime() here without change in domain instance.










      share|improve this question














      I'm trying to get date without time using following code.



      List<Person> personList = Person.createCriteria().list(){
      eq("deleted", false)
      order("datetime","desc")
      }

      def dateTimeSet = new HashSet()

      personList.each { personInstance ->

      Date originalDate = personInstance?.datetime

      println("Before Date In Instance: "+personInstance?.datetime)

      if(!dateTimeSet.contains(originalDate?.clearTime())){
      dateTimeSet.add(originalDate?.clearTime())
      }

      println("After Date In Instance: "+personInstance?.datetime)

      }


      OUTPUT:



      Before Date In Instance: Thu Sep 20 18:34:11 IST 2018
      After Date In Instance: Thu Sep 20 00:00:00 IST 2018


      How the personInstance gets updated when I'm using clearTime() in originalDate object.



      Let me know how to use clearTime() here without change in domain instance.







      grails java.util.date






      share|improve this question













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      asked Nov 20 '18 at 14:04









      Vivek BuddhadevVivek Buddhadev

      3811




      3811
























          1 Answer
          1






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          3














          As Date.clearTime() modifies the underlying instance, you should be creating a copy of it:



          Date originalDate = personInstance?.datetime
          if( !originalDate ) return
          Date date = new Date( originalDate.time ).clearTime()
          dateTimeSet << date





          share|improve this answer























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            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            3














            As Date.clearTime() modifies the underlying instance, you should be creating a copy of it:



            Date originalDate = personInstance?.datetime
            if( !originalDate ) return
            Date date = new Date( originalDate.time ).clearTime()
            dateTimeSet << date





            share|improve this answer




























              3














              As Date.clearTime() modifies the underlying instance, you should be creating a copy of it:



              Date originalDate = personInstance?.datetime
              if( !originalDate ) return
              Date date = new Date( originalDate.time ).clearTime()
              dateTimeSet << date





              share|improve this answer


























                3












                3








                3







                As Date.clearTime() modifies the underlying instance, you should be creating a copy of it:



                Date originalDate = personInstance?.datetime
                if( !originalDate ) return
                Date date = new Date( originalDate.time ).clearTime()
                dateTimeSet << date





                share|improve this answer













                As Date.clearTime() modifies the underlying instance, you should be creating a copy of it:



                Date originalDate = personInstance?.datetime
                if( !originalDate ) return
                Date date = new Date( originalDate.time ).clearTime()
                dateTimeSet << date






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 20 '18 at 14:14









                injecteerinjecteer

                10.6k22355




                10.6k22355
































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