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From: rob stone <[email protected]>
To: Pawel Veselov <[email protected]>
To: List <[email protected]>
Subject: Re: PGConnection.getNotifications(0) doesn't block
Date: Fri, 04 Aug 2023 18:47:43 +1000
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAMnJ+Bf7STMy2DwKjT12dxT-j+Han1KoVSkmFZ9Otuwd6to+DA@mail.gmail.com>
References: <CAMnJ+Bf7STMy2DwKjT12dxT-j+Han1KoVSkmFZ9Otuwd6to+DA@mail.gmail.com>

Hello,

On Thu, 2023-08-03 at 16:04 +0200, Pawel Veselov wrote:
> Hello.
> 
> I'm implementing a bit that is expected to wait for published channel
> notifications,
> and once there are any - process them.
> 
> I'm using PGConnection.getNotifications(0), but that immediately
> returns an empty
> array, and doesn't block like JavaDoc says it should.
> 
> I'm on 42.6.0.
> 
> What am I missing?
> 
> Thank you.
> 
> 

Have you read the JDBC docs
https://jdbc.postgresql.org/documentation/server-prepare 
which has a section about Listen/Notify?

HTH

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