setOntClass does not replace classes that follow from rules byinference
- this should be clear.I mean, how should this work? As long as the
rules are used for inference and the data matches the body of the rules,
the head will be added.
On 27.01.2017 15:28, tina sani wrote:
> My individual employee is a type of Technical, Manager and Programmer. I
> want to replace all these classes with only one class Worker. I used the
> following code, it supposed to replace it but it does not.
> All these classes are defined in the code.
>
> if ((employee.hasOntClass(technical)) &&
> (employee.hasOntClass(programmer)) && (employee.hasOntClass(manager)))
> {
> employee.setOntClass(worker);
> JOptionPane.showMessageDialog(null, "here are the three classes");
> }
>
> Though it display the message in the Dialog.
>
> On Fri, Jan 27, 2017 at 12:57 PM, Lorenz B. <
> [email protected]> wrote:
>
>> Why should a method called "listOntClasses" just return a single class?
>> The usage of the plural form should be clear enough. And Javadoc Javadoc
>> Javadoc,...
>>> Dave, I have read some where that Individual#listOntClasses will only
>> list
>>> one class at one time.
>>>
>>> And yes employee is individual and programmer, manager and worker are
>> class
>>> variables.
>>>
>>> On Fri, Jan 27, 2017 at 12:23 AM, Dave Reynolds <
>> [email protected]>
>>> wrote:
>>>
>>>> On 26/01/2017 21:08, tina sani wrote:
>>>>
>>>>> Hi Dave, Will this work?
>>>>>
>>>>> if ((employee1.hasOntClass(programmer)) &&
>>>>> ((employee1.hasOntClass(manager)) &&((employee1.hasOntClass(worker))
>>>>> {
>>>>>
>>>>> }
>>>>>
>>>> Try it and see!
>>>>
>>>> There's not enough there for us to tell for sure. If the variable
>>>> employee1 is an Individual and if variables programmer, manager and
>> worker
>>>> are all Resources correctly corresponding to your classes then that will
>>>> test if that Individual has all three of those classes in the model
>>>> (whether asserted or inferred by rules).
>>>>
>>>> To add to my earlier answer, if you have an Individual rather than just
>>>> and OntResource then Individual#listOntClasses will enable you to
>> enumerate
>>>> the classes conveniently.
>>>>
>>>> Dave
>>>>
>>>>
>>>> On Thu, Jan 26, 2017 at 11:32 PM, Dave Reynolds <
>> [email protected]
>>>>> wrote:
>>>>>
>>>>> On 26/01/2017 15:20, tina sani wrote:
>>>>>> How can I get all the classes of which an individual is a type? After
>>>>>>> Jena
>>>>>>> rules executed, my individual has multiple class like:
>>>>>>> Employee001 is of type: Worker, Programmer, Manager.
>>>>>>>
>>>>>>> So can I get all these three classes in Jena ? I have read somewhere
>>>>>>> that
>>>>>>> getOntClass() only return one class at a time and that is on random
>>>>>>> basis.
>>>>>>>
>>>>>>> See OntResource#listRDFTypes or, if you just have a Resource then
>>>>>>>
>>>>>> Resource#listProperties(RDF.type) or, as Charles says, use SPARQL.
>>>>>>
>>>>>> Dave
>>>>>>
>>>>>>
>>>>>>
>>>>>> ---
>>>>>> This email has been checked for viruses by Avast antivirus software.
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>>>>>>
>>>>>>
>>>>>>
>>>> ---
>>>> This email has been checked for viruses by Avast antivirus software.
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>>>>
>>>>
>> --
>> Lorenz Bühmann
>> AKSW group, University of Leipzig
>> Group: http://aksw.org - semantic web research center
>>
>>
