Bruce, Great point -- related to that, at some level ordering does have some level of semantics.
The proposal is to enable those semantics through a flag, and then let unstructured types still get unstructured behavior by default for back compat. Cheers, Chris On 1/17/13 6:55 AM, "Bruce Barkstrom" <[email protected]> wrote: >Sounds like that could get interesting if the metadata had to deal >with values that are part of a time series - such as versions of >files created on different dates or identifying files that are similar >except for the time interval of the data they contain. > >Bruce B. > >On Thu, Jan 17, 2013 at 9:52 AM, Luca Cinquini (JIRA) ><[email protected]>wrote: > >> >> [ >> >>https://issues.apache.org/jira/browse/OODT-551?page=com.atlassian.jira.pl >>ugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13556230#com >>ment-13556230] >> >> Luca Cinquini commented on OODT-551: >> ------------------------------------ >> >> Having a flag sounds good to me. I can have that done by the end of the >> week, unless you have it already. >> And I will fix the unit test, sorry about that. >> >> > DataSourceCatalog implementation does not preserve order of metadata >> values >> > >> >>------------------------------------------------------------------------- >>-- >> > >> > Key: OODT-551 >> > URL: https://issues.apache.org/jira/browse/OODT-551 >> > Project: OODT >> > Issue Type: Bug >> > Components: file manager >> > Affects Versions: 0.5 >> > Reporter: Luca Cinquini >> > Assignee: Luca Cinquini >> > Fix For: 0.6 >> > >> > Attachments: OODT-551.luca.patch.txt >> > >> > >> > The table that stores the metadata (key, value) pairs for the File >> Manager database-based implementation has no primary key - as a >> consequence, values are not guaranteed to be returned in any order, >>which >> is a problem for applications that rely on the order of the values (for >> example, among different metadata keys). >> >> -- >> This message is automatically generated by JIRA. >> If you think it was sent incorrectly, please contact your JIRA >> administrators >> For more information on JIRA, see: >>http://www.atlassian.com/software/jira >>
