public inbox for [email protected]  

help / color / mirror / Atom feed

From: Tom Lane <[email protected]>
To: Jeff Davis <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: allowing extensions to control planner behavior
Date: Wed, 28 Aug 2024 19:25:59 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <CA+TgmoZY+baV-T-5ifDn6P=L=aV-VkVBrPmi0TQkcEq-5Finww@mail.gmail.com>
	<[email protected]>
	<CA+TgmoY4yBRawLY-u0GM6aW7f0N4W8RU8WsZRb5+qhpWWfmZcQ@mail.gmail.com>
	<[email protected]>

Jeff Davis <[email protected]> writes:
> Beyond awkwardness, one case where it matters is the interaction
> between an extension that provides hints and an extension that offers a
> CustomScan. How is the hints extension supposed to disable a path it
> doesn't know about?

This does not seem remarkably problematic to me, given Robert's
proposal of a bitmask of allowed plan types per RelOptInfo.
You just do something like

	rel->allowed_plan_types = DESIRED_PLAN_TYPE;

The names of the bits you aren't setting are irrelevant to you.

			regards, tom lane

view thread (4+ messages)  latest in thread

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected], [email protected], [email protected]
  Subject: Re: allowing extensions to control planner behavior
  In-Reply-To: <[email protected]>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox