[xwiki-devs] Hashmap vs. Objects (theoretical question about a data model)

[Kamna Jain]

Thanks Sergiu.
Your response was very helpful!




On 5/5/08, Kamna Jain <kammy.scorpi at gmail.com> wrote:
>
> Hi All,
>
> This question "might" be related to the thread that has been active in the
> past couple of days about the data  model.
> We have a similar situation with the only difference  being that we want
> to create lists or collections (like Groups) of certain pre- created
> Objects.
> The Object as a whole may/will belong to more than one such collection -
> which means that if we were to use a Document to link a Collection and its
> contents, then every document will have a COPY of the same object and this
> is definitely not desirable for good performance - Right?
>
> So, in that case, we have 2 alternatives:
> 1) Use the techiniques used in XWiki to create Groups: each group has
> objects of class XWikiGroup with just one field that refers to the Member
> name.  OR
> 2) Use XWiki.getHashmap() and add the Collection and its members to the
> hashmap (as the Key and Value resp.)
>
> The XWiki API indicates that the option #2 must be used in xwiki when
> Objects can not be created.
> My Question is:
> -> Even though I could use option #1 and create objects and add them to
> the document that would represent the Collection, can I still use option #2
> because I think that it will provide better performance. Am I right in my
> assumption? What should I do?
>
> Thanks a lot for all help!
>
>
>