Обсуждение: BUG #1155: AbstractJdbc2ResultSet:parseQuery ; in tablename

The following bug has been logged online:

Bug reference:      1155
Logged by:          David Brownlee

Email address:      abs@mono.org

PostgreSQL version: 7.4

Operating system:   NetBSD

Description:        AbstractJdbc2ResultSet:parseQuery ; in tablename

Details:


In AbstractJdbc2ResultSet:parseQuery can end up leaving a ; on the end of a
tablename, which when later used in isUpdateable() will choke.
The following 'fixes' it:

--- org/postgresql/jdbc2/AbstractJdbc2ResultSet.java.orig       2004-05-21
12:54
:29.000000000 +0100
+++ org/postgresql/jdbc2/AbstractJdbc2ResultSet.java
@@ -1448,7 +1450,7 @@ public abstract class AbstractJdbc2Resul
                        {
                                if (name.toLowerCase().equals("from"))
                                {
-                                       tableName = st.nextToken();
+                                       tableName =
st.nextToken().replaceAll(";
", "");
                                        tableFound = true;
                                }

This was found while writing a small java tool to copy the contents of one
database to another, which can be provided to demonstrate the problem on
request. Would have attached it here if there had been an option :)

On Sat, 22 May 2004, PostgreSQL Bugs List wrote:

>
> The following bug has been logged online:
>
> Logged by:          David Brownlee
> Email address:      abs@mono.org
> PostgreSQL version: 7.4
> Description:        AbstractJdbc2ResultSet:parseQuery ; in tablename
> Details:
>
>
> In AbstractJdbc2ResultSet:parseQuery can end up leaving a ; on the end of a
> tablename, which when later used in isUpdateable() will choke.
> The following 'fixes' it:
>
> --- org/postgresql/jdbc2/AbstractJdbc2ResultSet.java.orig       2004-05-21
> 12:54
> :29.000000000 +0100
> +++ org/postgresql/jdbc2/AbstractJdbc2ResultSet.java
> @@ -1448,7 +1450,7 @@ public abstract class AbstractJdbc2Resul
>                         {
>                                 if (name.toLowerCase().equals("from"))
>                                 {
> -                                       tableName = st.nextToken();
> +                                       tableName =
> st.nextToken().replaceAll(";
> ", "");
>                                         tableFound = true;
>                                 }
>
> This was found while writing a small java tool to copy the contents of one
> database to another, which can be provided to demonstrate the problem on
> request. Would have attached it here if there had been an option :)
>

This isn't a valid solution as replaceAll is a 1.4 jdk feature while this
code is in the jdbc2 package which means it must be compilable with the
1.2 jdk.  Additionally it's possible for a tablename to contain a
semi-colon.  I've been discussing the failings of parseQuery with another
user here:

http://gborg.postgresql.org/project/pgjdbc/bugs/bugupdate.php?793

Kris Jurka