connection.rb:4: /usr/lib/ruby/gems/1.8/gems/mysql-2.7/mysql.so:0:
Invalid char \177' in expression (SyntaxError) from connection.rb:4:inrequire’
from connection.rb:4
Is this a compatibility issue between JRuby and MySQL driver writting
in Ruby? Is this expected behaviour or can this be addressed?
I’m not sure if this is the case, but seems like it might be. JRuby
doesn’t support C extensions. I don’t know if it can be addressed with
that driver. You might be able to use the Java MySQL Driver, keep in
mind the free one is GPL.
If I’m wrong about anything, someone correct me.
Joe
Venks [email protected] wrote: Here is the simple Ruby
program that works with “Ruby” but gives an
error with “JRuby”.
connection.rb:4: /usr/lib/ruby/gems/1.8/gems/mysql-2.7/mysql.so:0:
Invalid char \177' in expression (SyntaxError) from connection.rb:4:in require’
from connection.rb:4
Is this a compatibility issue between JRuby and MySQL driver writting
in Ruby? Is this expected behaviour or can this be addressed?
The pure Ruby MySQL driver should be fine, but it looks like you’ve got
the non-pure-Ruby driver and it’s trying to load it. There’s a known bug
in JRuby that it will try to load .so files as Ruby source (oops), but
no amount of magic will make it load native extensions (yet).
Make sure you’re using a pure Ruby MySQL driver if you want to access SQL.
Or of course you could use JDBC directly. The API is pretty clean, a lot
cleaner than many Java APIs.
I installed this driver using “gem install mysql”. I suppose this will
install MySQL/Ruby driver but I need Ruby/MySQL which is pure Ruby
MySQL driver. Is that correct?
connection.rb:4: /usr/lib/ruby/gems/1.8/gems/mysql-2.7/mysql.so:0:
Invalid char \177' in expression (SyntaxError) from connection.rb:4:inrequire’
from connection.rb:4
Is this a compatibility issue between JRuby and MySQL driver writting
in Ruby? Is this expected behaviour or can this be addressed?
The pure Ruby MySQL driver should be fine, but it looks like you’ve got
the non-pure-Ruby driver and it’s trying to load it. There’s a known bug
in JRuby that it will try to load .so files as Ruby source (oops), but
no amount of magic will make it load native extensions (yet).
Make sure you’re using a pure Ruby MySQL driver if you want to access
SQL.
I am not able to make the pure Ruby Mysql driver work. I am getting
the following error and couldn’t figure out why this error is showing
up. MySQL manual mentions something about old client and password but
I am using MySQL 5.1 and I have no other version installed previously.
Of course I never had any issues with the Native Ruby MySQL driver.
Any ideas?
Error message: Client does not support authentication protocol
requested by server; consider upgrading MySQL client
That’s unusual, since rails works fine with the pure-ruby mysql driver.
However, if you’re looking to use mysql directly, perhaps you should
look into using JDBC instead? I’m sure we can find a good example if
you’re interesed in that. JDBC provides a uniform interface to basically
any database.
Yes. Please send me any examples you may have. I already got one from
this mailing-list which I haven’t tried yet. But don’t mind receiving
few from you.
At this stage, JDBC seems to like the best option given that I need to
to communicate 2 different databases and one of them has only JDBC
interface and other is MySQL for which I will use JDBC too. Since JDBC
is my only option, JRuby will be the default choice.
Yes. Please send me any examples you may have. I already got one from
this mailing-list which I haven’t tried yet. But don’t mind receiving
few from you.
At this stage, JDBC seems to like the best option given that I need to
to communicate 2 different databases and one of them has only JDBC
interface and other is MySQL for which I will use JDBC too. Since JDBC
is my only option, JRuby will be the default choice.
Here’s a very simple example to get you into the JDBC frame of mind.
This is basically a portion of the code shown at