Story #5402: As a developer, Package content allows ORDER_BY in postgres based on EVR comparisons - RPM Support - Pulp

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Story #5402

closed

As a developer, Package content allows ORDER_BY in postgres based on EVR comparisons

Added by ggainey about 5 years ago. Updated over 4 years ago.

Status:

CLOSED - CURRENTRELEASE

Priority:

Normal

Assignee:

dalley

Sprint/Milestone:

Pulp RPM 3.5.0

Start date:

Due date:

% Done:

100%

Estimated time:

Platform Release:

Groomed:

Sprint Candidate:

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Sprint:

Quarter:

Description

In order to be able to do things like ORDER BY (EVR) in postgres on the Package content unit, we need to have a type and a comparison method available. Some examples of this include:

Debian:

https://packages.debian.org/sid/postgresql-11-debversion

Spacewalk:

https://github.com/spacewalkproject/spacewalk/blob/master/schema/spacewalk/postgres/class/evr_t.sql
https://github.com/spacewalkproject/spacewalk/blob/master/schema/spacewalk/postgres/packages/rpm.pkb#L194

VMaaS:

https://github.com/RedHatInsights/vmaas/blob/master/database/vmaas_db_postgresql.sql#L8

We should probably adopt one of the existing methods for the Package model.

Related issues

Blocks RPM Support - Story #5367: As a user, I can have a sync option that retains the latest N packages of the same name

CLOSED - CURRENTRELEASE

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Updated by bmbouter about 5 years ago

Subject changed from As Pulp3, I need to be able to do ORDER_BY in postgres based on EVR comparisons to As a developer, Package content allows ORDER_BY in postgres based on EVR comparisons
Description updated (diff)

Is the idea that there will be a field on the model and a DB trigger would populate it?

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Updated by ggainey about 5 years ago

bmbouter wrote:

Is the idea that there will be a field on the model and a DB trigger would populate it?

Depends on the exact approach - VMaaS, for example, creates the evr_t array and inserts it directly:

https://github.com/RedHatInsights/vmaas/blob/master/reposcan/database/package_store.py#L45

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Updated by bmbouter about 5 years ago

ggainey wrote:

bmbouter wrote:

Is the idea that there will be a field on the model and a DB trigger would populate it?

Depends on the exact approach - VMaaS, for example, creates the evr_t array and inserts it directly:

https://github.com/RedHatInsights/vmaas/blob/master/reposcan/database/package_store.py#L45

I see thank you. So we could do it either way.

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