jnunemaker / cassanity Goto Github PK
View Code? Open in Web Editor NEWBrings sanity to CQL + Ruby.
Home Page: http://jnunemaker.github.com/cassanity
License: MIT License
Brings sanity to CQL + Ruby.
Home Page: http://jnunemaker.github.com/cassanity
License: MIT License
Tests are failing on 2.0 and we need to get it fixed and keep it that way.
See #29 for context.
Running a cassandra 1.2.1 server locally, fully default configuration, get the following exception when I use cassanity:
[5] pry(main)> Cassanity::Client.new('127.0.0.1:9160')
CassandraCQL::Error::InvalidRequestException: Cannot execute/prepare CQL2 statement since the CQL has been set to CQL3(This might mean your client hasn't been upgraded correctly to use the new CQL3 methods introduced in Cassandra 1.2+).
from /Users/mconway/.rvm/gems/jruby-1.7.2/gems/cassandra-cql-1.1.5/lib/cassandra-cql/database.rb:101:in `execute_cql_query'
Does cassanity require CQL3? Any workarounds?
I can't create a column family with compact storage (a new option for CQL 3.0 for wide rows). The problem is that the :with
option is expecting a hash of values or hashes. COMPACT STORAGE
is unique since it doesn't have a value.
I have this patch:
diff --git a/lib/cassanity/argument_generators/with_clause.rb b/lib/cassanity/argument_generators/with_clause.rb
index f4c82c3..fa4516e 100644
--- a/lib/cassanity/argument_generators/with_clause.rb
+++ b/lib/cassanity/argument_generators/with_clause.rb
@@ -17,9 +17,11 @@ module Cassanity
withs << "#{key}:#{sub_key} = ?"
variables << sub_value
end
- else
+ elsif value
withs << "#{key} = ?"
variables << value
+ else
+ withs << key
end
end
It let's me do this:
with: {'COMPACT STORAGE' => nil}
I haven't looked at the other column family options to see if something like true
would be a problem. Or maybe we just look for :compact_storage
as a special key?
with: {:compact_storage => true}
I may have missed something, but is there a way to use Cassanity to return the schema of an existing column family?
As a schema evolves over time, with migrations, and may be accessed by clients which did not create the schema, we might not have access to a canonical description of the schema at connection time. We might want to discover what the primary key is for a table, but I can't see how to achieve that.
Is it possible, and if not would some investigation of how to add something like that be of value to anyone except us?
Also alias tables to it.
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