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https://issues.apache.org/jira/browse/OODT-216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13445016#comment-13445016
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Paul Ramirez commented on OODT-216:
-----------------------------------
Actually recording new information is not needed for current implementation to
update their get next page methods as they already pass in the previous page.
From this the implementation can grab the last product and use information from
it. To support get previous page the previousLastReference would need to be
added.
> Improve speed of pagination in DataSourceCatalog by using lastIDs rather than
> scrollable cursors
> ------------------------------------------------------------------------------------------------
>
> Key: OODT-216
> URL: https://issues.apache.org/jira/browse/OODT-216
> Project: OODT
> Issue Type: Improvement
> Components: file manager
> Environment: from JPL's internal JIRA
> Reporter: Chris A. Mattmann
> Assignee: Chris A. Mattmann
> Fix For: 0.5
>
>
> Currently, the filemgr's DataSourceCatalog leverages scrollable record cursor
> result sets to page over the returned results from an underlying JDBC
> database. With many records to page over (on the orders of 100s of 1000s),
> this operation is somewhat slow. I think that the speed of the operation
> could be improved using a filter criteria of e.g., taking the last ID of an
> ordered product list, and then using that as a filter criteria to define the
> starting point for paging, not bothering with scrollable cursors.
> This patch will provide such a capability as a configurable option for the
> DataSourceCatalog.
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