[GENERAL] ResultSet is FORWARD_ONLY.

2009-06-16 Thread S Arvind
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


Re: [GENERAL] ResultSet is FORWARD_ONLY.

2009-06-16 Thread Andy Colson

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

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