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https://issues.apache.org/jira/browse/CASSANDRA-2500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13053365#comment-13053365
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Brian Palmer edited comment on CASSANDRA-2500 at 6/22/11 9:50 PM:
------------------------------------------------------------------
Jon,
jbellis asked me to take a quick look at this, but I haven't had much luck so
far getting this to work with DBI 0.4.3, ruby 1.8.7, cassandra 0.8.0 on OS X.
The short list:
* ruby syntax error in DBI::DBD::Cass::Database#execute_prepared (missing
comma)
* Cass::Driver calls super with VERSION which is "0.0.0", but DBI is expecting
the DBI API version ("0.4.0"), so an exception is thrown on init
* initializing a new DBI connection fails due to
DBI::DBD::Cass::Database#active? not checking if @tconn is nil before calling
@tconn.current_server
* DBI::DBD::Cass::Statement#execute references db, which isn't defined, it
probably means to use @db local var
* After working around the above errors, I get an exception when running a
select query like `dbh.execute("select * from users;").fetch` : NoMethodError:
undefined method `size' for #<CassandraThrift::CqlRow:0x102badf58>
I'm not entirely sure if any of these last four are issues specific to my
environment, but it seems unlikely that they all are. The require statements in
Cass.rb definitely need cleaning up as well, but it sounds like that's still an
open question. Also, I'd suggest changing all those define_method calls in
Cass.rb to normal method definitions just using def, that's very unidiomatic
ruby.
was (Author: codekitchen):
Jon,
jbellis asked me to take a quick look at this, but I haven't had much luck so
far getting this to work with DBI 0.4.3, ruby 1.8.7, cassandra 0.8.0 on OS X.
The short list:
* ruby syntax error in DBI::DBD::Cass::Database#execute_prepared (missing
comma)
* Cass::Driver calls super with VERSION which is "0.0.0", but DBI is expecting
the DBI API version ("0.4.0"), so an exception is thrown on init
* initializing a new DBI connection fails due to
DBI::DBD::Cass::Database#active? not checking if @tconn is nil before calling
@tconn.current_server
* DBI::DBD::Cass::Statement#execute references db, which isn't defined, it
probably means to use @db local var
* After working around the above errors, I get an exception when running a
select query like `dbh.execute("select * from users;")` : NoMethodError:
undefined method `size' for #<CassandraThrift::CqlRow:0x102badf58>
I'm not entirely sure if any of these last four are issues specific to my
environment, but it seems unlikely that they all are. The require statements in
Cass.rb definitely need cleaning up as well, but it sounds like that's still an
open question. Also, I'd suggest changing all those define_method calls in
Cass.rb to normal method definitions just using def, that's very unidiomatic
ruby.
> Ruby dbi client (for CQL) that conforms to AR:ConnectionAdapter
> ---------------------------------------------------------------
>
> Key: CASSANDRA-2500
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2500
> Project: Cassandra
> Issue Type: Task
> Components: API
> Reporter: Jon Hermes
> Assignee: Pavel Yaskevich
> Labels: cql
> Fix For: 0.8.2
>
> Attachments: 2500.txt, genthriftrb.txt, rbcql-0.0.0.tgz
>
>
> Create a ruby driver for CQL.
> Lacking something standard (such as py-dbapi), going with something common
> instead -- RoR ActiveRecord Connection Adapter
> (http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/AbstractAdapter.html).
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