Hello Tina,
> I want to sum 5 with the value already stored in a property. > > //Property "Hours" must be started from 1 and then sum 5 with it. > employee.getPropertyValue(No_of_Hours); > //Then perform calculations. > > The problem is that if I directly use employee.getPropertyValue(), it gives > me "Exception" (and rightly, because I did not set setPropertyValue() > first). That's not true. It returns null if there is no such value - and you have to handle this in the code indeed. > > But the problem is that when I set employee.getPropertyValue(No_of_Hours); > to 1 (one), it will always set the value 1(one) and not the recent > added(sum) value in the property. > > employee.setPropertyValue(No_of_Hours, 1); //1 is literal > employee.getPropertyValue(No_of_Hours); > //calculations > My requirement is like: int sum=No_of_Hours+1; > Then No_of_Hours plus what in the *variable sum*. > > So can I use employee.addLiteral(No_of_Hours, 1) instead of > employee.setPropertyValue(). > > I hope you have understood what my issue is? > > Kindest regards > > > > On Sun, Oct 16, 2016 at 11:10 AM, Dave Reynolds <dave.e.reyno...@gmail.com> > wrote: > >> On 16/10/16 16:59, tina sani wrote: >> >>> Hi >>> >>> What is the difference between addLiteral() and setpropertyvalue() when we >>> want to assign values to an individual.? >>> For example, >>> >>> //myEmployee is an instance. >>> >>> myEmplyee.addliteral(property, value) >>> myEmployee.setpropertyvalue(property, value) >>> >>> >> addLiteral adds a value, so if there is already a value there you will now >> have multiple values. >> >> setPropertyValue removes all existing values before adding the new value >> so you will only have the new value at the end. >> >> Dave >> >> -- Lorenz Bühmann AKSW group, University of Leipzig Group: http://aksw.org - semantic web research center
