Well I guess _ i rephrase - I’d vote for hiding :-) On another note - would it make sense to get away from names like parentCommunity parentCollection
in favor of parent / parentList again looking ahead to the bright future where collections and communities become the same Monika — Monika Mevenkamp Digital Repository Infrastructure Developer Princeton University Phone: 609-258-4161 Skype: mo-meven > On May 18, 2016, at 5:58 PM, Tim Donohue <[email protected]> wrote: > > Hi Monika, > > Those are good questions. To clarify, I'm not recommending we add a new "map > collections" feature. I was just pointing out to Terry, that *at the Java API > level*, DSpace has supported the idea of a Collection having multiple parents > for some time. That is not a change, it's just how the Java API has worked. > However, at the UI level, this feature has never been implemented because we > never had a clear use case for it (and I'm not exactly sure myself why the > API was built this way to begin with). > > When it comes to the REST API, we'd then have a decision. Do we let it act > more like the Java API or do we just "hide" this feature of the Java API and > make the REST API look more like the current UIs. I think this is the basics > of what Terry is asking in his #2. I'm not sold on the fact that we need to > let the REST API even support this feature (it's definitely not a high > priority). > I think the real issue here is just finding a solution to > https://jira.duraspace.org/browse/DS-2766 > <https://jira.duraspace.org/browse/DS-2766>, which is more about just > figuring out what "parentCommunityList" was meant to do. > > - Tim > > On 5/18/2016 3:08 PM, Monika Mevenkamp wrote: >> Right now DSpace has a conceptually clean structure, an almost perfect >> hierarchy, except where items are mapped to multiple collections. So for >> example: it is clear what it means to show a collection in the UI. For a >> mapped item that is not necessarily true. Image styling different >> collections in different ways in a future flexible UI - what style should >> be picked for a mapped item ? In other words - mapping things - means moving >> away from a hierarchy - means life will be more complicated. >> >> My question here: Mapping Collection to multiple communities — Is it worth >> it ? >> >> What is the use case for mapping collections to multiple communities ? >> >> Can the same be achieved with solr and ‘virtual’ collections which could be >> defined as whatever matches some kind of query ? >> >> What is the implication in terms of getting rid of the distinction between >> communities and collections ? >> That is a feature I am looking forward to: we have several communities with >> a single collection with few items. >> >> Where does that position the DSPACE model in relation to the Portland Data >> Model ? >> >> My gut tells me to not to map collections. I don’t have a good overview of >> the wider DSPace world though. >> But it would be worthwhile discussing before hacking … >> >> >> Monika >> — >> Monika Mevenkamp >> Digital Repository Infrastructure Developer >> Princeton University >> Phone: 609-258-4161 >> Skype: mo-meven >> >> >> >>> On May 18, 2016, at 12:33 PM, Terry Brady < >>> <mailto:[email protected]>[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> Tim, >>> >>> Thanks for the explanation. >>> >>> To implement #1, I recommend that we add the necessary hibernate >>> configuration logic to recursively traverse community2community. Who could >>> advise on that change? >>> >>> To implement #2, we would probably want to change the method return type to >>> return a list of lists: one list for each immediate community parent. >>> >>> Terry >>> >>> On Wed, May 18, 2016 at 7:39 AM, Tim Donohue < >>> <mailto:[email protected]>[email protected] >>> <mailto:[email protected]>> wrote: >>> Hi Terry, >>> >>> Some quick answers... >>> I'm not sure of the correct answer to #1 myself (Peter Dietz, did you >>> create this behavior?). Since it's called a "List" though, it sounds to me >>> like the behavior in DSpace 5.x is more correct (that the intension may be >>> to locate the full location of the collection, similar to breadcrumbs). >>> As for #2, the API / database has always supported the "idea" of a >>> Collection existing in multiple locations (i.e. a "linked" Collection). >>> However, we've never found a reason to fully build this out with unit >>> tests, etc. So, it's a partially created concept, and it's never really >>> been proven to "work". In addition, the UIs have never supported this >>> idea...at the UI level, a Collection only ever belongs to a single >>> Community. >>> So, essentially, #2 would/should be treated as a new feature. The >>> groundwork is there in the API / database layer. But, it has never been >>> fully built out. It'd need a volunteer to dig in and implement this concept >>> so that it's actually usable in the UIs. It also may require some >>> refactoring at the REST API layer, as you've noted. >>> >>> - Tim >>> On 5/17/2016 1:03 PM, Terry Brady wrote: >>>> I am investigating the following ticket: >>>> <https://jira.duraspace.org/browse/DS-2766>https://jira.duraspace.org/browse/DS-2766 >>>> <https://jira.duraspace.org/browse/DS-2766> >>>> >>>> Here are my questions. >>>> 1. In the collections endpoint, of the REST api, what is the intended >>>> behavior of expand=parentCommunityList? >>>> 2. In DSpace, can a collection exist in multiple communities? >>>> >>>> Question 1. expand=parentCommunityList >>>> >>>> In DSpace5x, the expand=parentCommunityList option returns the full >>>> hierarchy of owing communities for a collection (all the way to the top >>>> level community). >>>> >>>> In DSpace 6x, this option returns the subcommunity that is an immediate >>>> parent of the collection. >>>> >>>> Assuming that this behavior is incorrect in DSpace 6, the following >>>> configuration will need to be updated to follow the community2community >>>> hierarchy: >>>> https://github.com/DSpace/DSpace/blob/master/dspace-api/src/main/java/org/dspace/content/Collection.java#L81-L86 >>>> >>>> <https://github.com/DSpace/DSpace/blob/master/dspace-api/src/main/java/org/dspace/content/Collection.java#L81-L86> >>>> >>>> Question 2: Can a collection exist in multiple communities? >>>> >>>> The following method in DSpace 5x could imply that a collection can exist >>>> in multiple communities: >>>> <https://github.com/DSpace/DSpace/blob/dspace-5_x/dspace-api/src/main/java/org/dspace/content/Collection.java#L1402>https://github.com/DSpace/DSpace/blob/dspace-5_x/dspace-api/src/main/java/org/dspace/content/Collection.java#L1402 >>>> >>>> <https://github.com/DSpace/DSpace/blob/dspace-5_x/dspace-api/src/main/java/org/dspace/content/Collection.java#L1402> >>>> >>>> But, the REST API implies that there is a single "parentCommunity". >>>> https://github.com/DSpace/DSpace/blob/dspace-5_x/dspace-rest/src/main/java/org/dspace/rest/common/Collection.java#L136 >>>> >>>> <https://github.com/DSpace/DSpace/blob/dspace-5_x/dspace-rest/src/main/java/org/dspace/rest/common/Collection.java#L136> >>>> >>>> and a separate parentCommunityList >>>> https://github.com/DSpace/DSpace/blob/dspace-5_x/dspace-rest/src/main/java/org/dspace/rest/common/Collection.java#L156 >>>> >>>> <https://github.com/DSpace/DSpace/blob/dspace-5_x/dspace-rest/src/main/java/org/dspace/rest/common/Collection.java#L156> >>>> >>>> What is the intended set of relationships to be supported? >>>> >>>> If a collection can exist in multiple communities, how should the REST api >>>> respond to "expand=parentCommunityList" option? >>>> >>>> If a collection can exist in multiple communities, how can this >>>> relationship be created in our UIs? >>>> >>>> Terry >>>> >>>> -- >>>> Terry Brady >>>> Applications Programmer Analyst >>>> Georgetown University Library Information Technology >>>> >>>> <https://www.library.georgetown.edu/lit/code>https://www.library.georgetown.edu/lit/code >>>> <https://www.library.georgetown.edu/lit/code> >>>> 425-298-5498 <tel:425-298-5498> (Seattle, WA) >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "DSpace Technical Support" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to >>>> <mailto:[email protected]>[email protected] >>>> <mailto:[email protected]>. >>>> To post to this group, send email to >>>> <mailto:[email protected]>[email protected] >>>> <mailto:[email protected]>. >>>> Visit this group at https://groups.google.com/group/dspace-tech >>>> <https://groups.google.com/group/dspace-tech>. >>>> For more options, visit >>>> <https://groups.google.com/d/optout>https://groups.google.com/d/optout >>>> <https://groups.google.com/d/optout>. >>> >>> -- >>> Tim Donohue >>> Technical Lead for DSpace & DSpaceDirect >>> DuraSpace.org <http://duraspace.org/> | DSpace.org <http://dspace.org/> | >>> DSpaceDirect.org <http://dspacedirect.org/> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "DSpace Technical Support" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to >>> <mailto:[email protected]>[email protected] >>> <mailto:[email protected]>. >>> To post to this group, send email to >>> <mailto:[email protected]>[email protected] >>> <mailto:[email protected]>. >>> Visit this group at https://groups.google.com/group/dspace-tech >>> <https://groups.google.com/group/dspace-tech>. >>> For more options, visit >>> <https://groups.google.com/d/optout>https://groups.google.com/d/optout >>> <https://groups.google.com/d/optout>. >>> >>> >>> >>> -- >>> Terry Brady >>> Applications Programmer Analyst >>> Georgetown University Library Information Technology >>> https://www.library.georgetown.edu/lit/code >>> <https://www.library.georgetown.edu/lit/code> >>> 425-298-5498 (Seattle, WA) >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "DSpace Technical Support" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected] >>> <mailto:[email protected]>. >>> To post to this group, send email to >>> <mailto:[email protected]>[email protected] >>> <mailto:[email protected]>. >>> Visit this group at https://groups.google.com/group/dspace-tech >>> <https://groups.google.com/group/dspace-tech>. >>> For more options, visit https://groups.google.com/d/optout >>> <https://groups.google.com/d/optout>. >> > > -- > Tim Donohue > Technical Lead for DSpace & DSpaceDirect > DuraSpace.org | DSpace.org | DSpaceDirect.org -- You received this message because you are subscribed to the Google Groups "DSpace Technical Support" group. 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