Lists: | pgsql-general |
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From: | S Arvind <arvindwill(at)gmail(dot)com> |
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To: | pgsql-jdbc-owner(at)postgresql(dot)org, pgsql-general(at)postgresql(dot)org |
Subject: | ResultSet is FORWARD_ONLY. |
Date: | 2009-06-16 07:35:33 |
Message-ID: | abf9211d0906160035j64e2a6ees5e06f3e3ecdc118e@mail.gmail.com |
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Lists: | pgsql-general |
Hi everyone,
Recently we have upgraded postgres driver jdbc4 for 8.3. After that
while executing rst.first(), it raise the exception.
The statment was created correctly as
dbconnection..createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
org.postgresql.util.PSQLException: Operation requires a scrollable
ResultSet, but this ResultSet is FORWARD_ONLY.
at
org.postgresql.jdbc2.AbstractJdbc2ResultSet.checkScrollable(AbstractJdbc2ResultSet.java:207)
at
org.postgresql.jdbc2.AbstractJdbc2ResultSet.first(AbstractJdbc2ResultSet.java:292)
at
org.apache.tomcat.dbcp.dbcp.DelegatingResultSet.first(DelegatingResultSet.java:326)
This statment worked in postgres 8.1 jdbc 3 driver but now its not.. Pleas
help is solving this...
-Arvind S
From: | Andy Colson <andy(at)squeakycode(dot)net> |
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To: | S Arvind <arvindwill(at)gmail(dot)com> |
Subject: | Re: ResultSet is FORWARD_ONLY. |
Date: | 2009-06-16 18:26:25 |
Message-ID: | 4A37E3D1.60205@squeakycode.net |
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Lists: | pgsql-general |
S Arvind wrote:
> Hi everyone,
> Recently we have upgraded postgres driver jdbc4 for 8.3. After that
> while executing rst.first(), it raise the exception.
> The statment was created correctly as
> dbconnection..createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
>
> org.postgresql.util.PSQLException: Operation requires a scrollable
> ResultSet, but this ResultSet is FORWARD_ONLY.
> at
> org.postgresql.jdbc2.AbstractJdbc2ResultSet.checkScrollable(AbstractJdbc2ResultSet.java:207)
> at
> org.postgresql.jdbc2.AbstractJdbc2ResultSet.first(AbstractJdbc2ResultSet.java:292)
> at
> org.apache.tomcat.dbcp.dbcp.DelegatingResultSet.first(DelegatingResultSet.java:326)
>
>
> This statment worked in postgres 8.1 jdbc 3 driver but now its not..
> Pleas help is solving this...
>
> -Arvind S
I guess there are two important questions:
1) do you want a forward only result set?
2) if yes, then cant you just remove .first()?
Its ok not to use first, right:
q.open();
while (! q.eof())
{
do something;
q.next();
}
(IANAJP)
-Andy