[Dspace-tech] Delete item/collection/communities

[Gustavo]

I have update to Dspace 3.1 and when I try to delete an item, collection o
communitie, it show the message:
Excepción:
org.postgresql.util.PSQLException: ERROR: update o delete en «item» viola la
llave foránea «communities2item_item_id_fkey» en la tabla «communities2item»
Detail: La llave (item_id)=(1984) todavía es referida desde la tabla
«communities2item».
at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorI
mpl.java:2103)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.ja
va:1836)
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.j
ava:512)

*****************************
Gustavo Perosillo Herrera
STIC- Universidad de Valladolid
Telefono: 983423418
e-mail: gustavo....@uva.es
*********************************

[helix84]

Hi Gustavo,

the item is probably an unfinished submission. Check your list of
pending submissions. If that doesn't help, you can do

DELETE FROM communities2item WHERE item_id=1984;

and then try again deleting the item.


Regards,
~~helix84

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[Gustavo]

DSpace 3.0 allow customize which browse engine is utilized.
I use now SOLR Browse Engine(browseCreateDAO.class = org.dspace.browse.SolrBrowseCreateDAO). This class not add/remove any row in communities2item table. When I add an item no new row are add in the communities2item table.
Above I used browseCreateDAO.class = org.dspace.browse.BrowseCreateDAOPostgres when I add an item, a new row are add in the communities2item table each item.
When I attempt to erase an item add with the old configuration browseCreateDAO.class = org.dspace.browse.BrowseCreateDAOPostgres since the new configuration browseCreateDAO.class = org.dspace.browse.SolrBrowseCreateDAO no row are deleted from communities2item and an error ocurr

Excepción:
> org.postgresql.util.PSQLException: ERROR: update o delete en «item»
> viola la llave foránea «communities2item_item_id_fkey» en la tabla «communities2item»
> Detail: La llave (item_id)=(1984) todavía es referida desde la tabla
> «communities2item».

*****************************
Gustavo Perosillo Herrera
STIC- Universidad de Valladolid
Telefono: 983423418
e-mail: gustavo....@uva.es
*********************************

-----Mensaje original-----
De: ivan....@gmail.com [mailto:ivan....@gmail.com] En nombre de helix84
Enviado el: viernes, 26 de julio de 2013 14:12
Para: Gustavo
CC: dspac...@lists.sourceforge.net
Asunto: Re: [Dspace-tech] Delete item/collection/communities

[Andrea Bollini]

Hi Gustavo,
have you run the index-init script as part of you upgrade process *after* to have changed the Browse implementation?
The org.dspace.browse.SolrBrowseCreateDAO
https://github.com/DSpace/DSpace/blob/master/dspace-api/src/main/java/org/dspace/browse/SolrBrowseCreateDAO.java#L404
delegate to the DBMS browse implementation the drop of any old tables/views that could be created before for the browse using the DBMS implementation.
Looking to the code it seems that I have missed to delegate the operation for the deleteCommunityMappings (but not sure that it is really needed)
https://github.com/DSpace/DSpace/blob/master/dspace-api/src/main/java/org/dspace/browse/SolrBrowseCreateDAO.java#L362
that looks as possible source for your issue.
If you switch back to the SOLR implementation you can just delete all the rows in the communities2item table and you should not have any more issues deleting items as the SOLR implementation never write in this table.

I will appreciate too if you can check if delegating the operation for the method deleteCommunityMappings
i.e.

@Override

    public void deleteCommunityMappings(int itemID) throws BrowseException

    {

	dbCreateDAO.deleteCommunityMappings(itemID);

    }

solve your problem running the index-init script.
Please report also this issue as a JIRA bug
Thanks,
Andrea

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[helix84]

Hi,

I tried to give generic advice regarding the SQL constraint, but
Andrea (in CC) wrote the SolrBrowseCreateDAO, so he will probably know
the particular implementation details.