From: Oliver Jowett <oliver@opencloud.com>
To: Jie Liang <jie@stbernard.com>
Cc: Kris Jurka <books@ejurka.com>
Cc: pgsql-jdbc@postgresql.org
Subject: Re: Prepare Statement
Date: Sat, 19 Jun 2004 11:07:03 +1200
Message-ID: <40D37597.9030705@opencloud.com> (raw)
In-Reply-To: <E7E213858379814A9AE48CA6754F5ECB03451966@mail01.stbernard.com>
References: <E7E213858379814A9AE48CA6754F5ECB03451966@mail01.stbernard.com>
Jie Liang wrote:
> So, I think that PreparedStatement should have a way at least case a
> String to an Array or a way to create a Array, because of
> conn.prepareStatement("SELECT myfunction('{1,2,3}')") is NOT very
> useful.
One way that might work in the current driver is to use PGobject, which
lets you specify the underlying typename to use:
stmt = conn.preparedStatement("SELECT myfunction(?)");
org.postgresql.util.PGobject obj = new PGobject();
obj.setValue("'{1,2,3}'");
obj.setType("int[]");
stmt.setObject(1, obj);
Untested, but in theory this should work even with
setUseServerPrepare(true) in effect.
Also, if you search the archives, quite some time ago (a year?) I posted
a patch that implemented setArray() better, so that you could pass your
own Array implementation to it and have things work correctly. It's out
of date, but might give you a starting point.
-O
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To: pgsql-sql@postgresql.org
Cc: oliver@opencloud.com, jie@stbernard.com, books@ejurka.com, pgsql-jdbc@postgresql.org
Subject: Re: Prepare Statement
In-Reply-To: <40D37597.9030705@opencloud.com>
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