Hey,
great thanks. I am a bit curious couldn´t you have just done one
"db.commit()" at the end?
Maybe i missed something.
On Tuesday, April 1, 2014 7:45:08 PM UTC+2, Gaurav Dhiman wrote:
>
> As suggested by Arve, its advisable to define the property as LINK or
> LINKSET or LINKMAP (whatever). If you do so, simple assignment of one
> ODocument to property will LINK it, as internally OrientDB seems to
> understand that its linking in embedding.
>
> Example:
>
> comp = db.getInstance("Company");
> comp.field("name","Company name");
> comp.save();
> db.commit();
> for (i= 0; i<5; i++) {
> emp = db.getInstance("Employee");
> emp.field("name", "Employee name");
> emp.field("company", comp); // saving LINK
> emp.save();
> emps[i] = emp;
> }
> db.commit();
> comp.field("employees", emps); // saving LINKSET / LINKMAP
> comp.save();
> db.commit();
>
> Hope it helps.
>
> Best Regards,
>
> Gaurav
> http://www.linkedin.com/in/gauravdhiman
>
> Website: www.TechZulla.com
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> ___________________________________
>
>
> On Tue, Apr 1, 2014 at 10:46 PM, Arve Knudsen
> <[email protected]<javascript:>
> > wrote:
>
>> Nhat, my answer <http://stackoverflow.com/a/22569458/265261> on
>> StackOverflow shows how to create an ODocument with a linkset, in Scala.
>> Scala is so close to Java, that you should be able to figure it out. My
>> advice apart from this is to declare in the database schema that your
>> properties are link/linkset etc., so that you'll get an error if you supply
>> the wrong type from Java.
>>
>> Hth,
>> Arve
>>
>>
>> On Tue, Apr 1, 2014 at 4:54 AM, Nhat Nguyen
>> <[email protected]<javascript:>
>> > wrote:
>>
>>> Is there a java example to crud link/linkset/linklist/linkmap into a
>>> record<ODocument>?
>>>
>>> Regards,
>>> Nhat
>>>
>>> On Monday, March 31, 2014 2:39:52 PM UTC+2, Gaurav Dhiman wrote:
>>>>
>>>> Thanks Luca, it helped me.
>>>> Are there some methods of ODocument object also that can be used to
>>>> add, delete objects from collections (LINKSET / LINKMAP). Something like
>>>> below:
>>>>
>>>> comp = db.query("select from company #9:0");
>>>> comp = comp[0];
>>>> *comp.add("employees", #10:4); OR comp.add("employees", emp); // emp
>>>> being object / record not @rid*
>>>> *comp.remove("employees", #10:2); OR comp.remove("employees", emp); ** //
>>>> emp being object / record not @rid*
>>>> comp.save();
>>>> db.commit();
>>>>
>>>> Regards,
>>>> Gaurav
>>>>
>>>>
>>>>
>>>> On Sat, Mar 29, 2014 at 11:13 PM, Luca Garulli <[email protected]>wrote:
>>>>
>>>>> Look at the answer to your question on StackOverflow: http://
>>>>> stackoverflow.com/questions/22715353/how-to-add-delete-
>>>>> and-check-existence-with-linkset-in-orientdb/22734521#22734521
>>>>>
>>>>> Lvc@
>>>>>
>>>>>
>>>>> On 28 March 2014 21:15, Gaurav Dhiman <[email protected]> wrote:
>>>>>
>>>>>> Can anyone share code example (JavaScript) to do this ?
>>>>>> On Mar 28, 2014 5:57 PM, "Gaurav Dhiman" <[email protected]>
>>>>>> wrote:
>>>>>>
>>>>>>> Thanks Arve for response, but I am still not clear.
>>>>>>>
>>>>>>> My queries are simple. I am using OrientDB Javascript functions:
>>>>>>>
>>>>>>> Just for example, if my company.employees = [#4:1, #4:5, #4:3]
>>>>>>>
>>>>>>> 1. How can I add #4:6 to linkset ? After addition it should be
>>>>>>> [#4:1, #4:5, #4:3, #4:6]
>>>>>>>
>>>>>>> 2. How can I delete #4:5 from linkset ? After deletion it should be
>>>>>>> [#4:1, #4:3, #4:6]
>>>>>>>
>>>>>>> 3. If I add #4:1 again to linkset, will it check for duplicate and
>>>>>>> return error or do I need to check problematically before adding to
>>>>>>> linset
>>>>>>> ? If I need to do it, how to do it ?
>>>>>>>
>>>>>>> I am sure there must be some methods to add, delete and check
>>>>>>> existence on linkset & linkmap, I am not just aware of those.
>>>>>>> Any pointers will be helpful.
>>>>>>>
>>>>>>> Thanks once again !
>>>>>>>
>>>>>>> Regards,
>>>>>>> Gaurav
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Thursday, March 27, 2014 9:00:36 PM UTC+5:30, Arve Knudsen wrote:
>>>>>>>>
>>>>>>>> Gaurav, regarding adding to a linkset, you may remember my question
>>>>>>>> on StackOverflow about saving document links with a document. My
>>>>>>>> answer <http://stackoverflow.com/a/22569458/265261> to that
>>>>>>>> question shows how to do this, and it looks like it would solve your
>>>>>>>> example.
>>>>>>>>
>>>>>>>> Hope this helps,
>>>>>>>> Arve
>>>>>>>>
>>>>>>>>
>>>>>>>> On Thu, Mar 27, 2014 at 12:04 PM, Gaurav Dhiman <
>>>>>>>> [email protected]> wrote:
>>>>>>>>
>>>>>>>>> How to add, edit and check an existence of LINK in LINKSET ?
>>>>>>>>>
>>>>>>>>> Considering below case for *document based database*, can some on
>>>>>>>>> give me code example for add, edit and check existence cases.
>>>>>>>>>
>>>>>>>>> Lets say
>>>>>>>>>
>>>>>>>>> company.employees is LINKSET (array of links to employee objects)
>>>>>>>>> employee.company is LINK (reverse link to company object)
>>>>>>>>>
>>>>>>>>> While adding employee, I need to do two way linking (company to
>>>>>>>>> employee and employee to company), how to do it ?
>>>>>>>>>
>>>>>>>>> var emp = db.getInstance("employee");
>>>>>>>>> emp.field("name", "John");
>>>>>>>>> emp.field("age", "35");
>>>>>>>>> emp.filed("company", "#2:4"); // Linked from employee to
>>>>>>>>> company
>>>>>>>>> company.field("employees", ?????); // How to create link from
>>>>>>>>> company to employee ?
>>>>>>>>>
>>>>>>>>> Regards,
>>>>>>>>> Gaurav
>>>>>>>>>
>>>>>>>>> --
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