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From "Jacopo Cappellato (Jira)" <j...@apache.org>
Subject [jira] [Commented] (OFBIZ-10953) have CurrencyDimension have a dimensionId that is based on the natural key
Date Thu, 06 Feb 2020 11:26:00 GMT

    [ https://issues.apache.org/jira/browse/OFBIZ-10953?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17031495#comment-17031495
] 

Jacopo Cappellato commented on OFBIZ-10953:
-------------------------------------------

Unfortunately it is not desirable to use uomId (i.e. the natural key) to populate the dimensionId
(i.e. the primary key of the dimension table): in fact, based on the update strategy adopted
for the dimension table (type 1, type 2 etc... as described in "The Datawarehouse Toolkit"
book) the CurrencyDimension table may contain several rows with the same uomId as this is
important for properly implementing drill-up and drill-down reports.

> have CurrencyDimension have a dimensionId that is based on the natural key
> --------------------------------------------------------------------------
>
>                 Key: OFBIZ-10953
>                 URL: https://issues.apache.org/jira/browse/OFBIZ-10953
>             Project: OFBiz
>          Issue Type: Improvement
>          Components: bi
>    Affects Versions: Trunk, Release Branch 17.12, Release Branch 18.12
>            Reporter: Pierre Smits
>            Assignee: Pierre Smits
>            Priority: Major
>              Labels: CurrencyDimension, birt, currency, dimension, dwh
>         Attachments: OFBIZ-10953-BI.patch
>
>
> Currently the record sequencer (delegator.getNextSeqId) is used to determine the dimensionId
for the CurrencyDimension. This is unnecessary as the uomId from the UOM table can be used
for currency.
> It also makes it easier to set the foreign-key in fact tables by generating it based
on the date provided, than by retrieving the dimensionId based on a retrieval through the
getDimensionIdFromNaturalKey service.



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