cassandra_via_hector_with_jruby.rb

#!/usr/bin/env ruby
require 'java'

hector_lib    = File.join(ENV['HOME'], "Programming/hector/releases/hector-0.7.0-18")
hector_target = File.join(ENV['HOME'], "Programming/hector/target")
Dir["#{hector_target}/*.jar", "#{hector_lib}/*.jar"].each{|jar| $CLASSPATH << jar}

java_import 'me.prettyprint.cassandra.serializers.StringSerializer'
java_import 'me.prettyprint.hector.api.Cluster'
java_import 'me.prettyprint.hector.api.Keyspace'
java_import 'me.prettyprint.hector.api.beans.HColumn'
java_import 'me.prettyprint.hector.api.exceptions.HectorException'
java_import 'me.prettyprint.hector.api.factory.HFactory'
java_import 'me.prettyprint.hector.api.mutation.Mutator'
java_import 'me.prettyprint.hector.api.query.ColumnQuery'
java_import 'me.prettyprint.hector.api.query.QueryResult'

class CassandraViaHector
  attr_accessor :string_serializer, :cluster, :keyspace_op, :mutator, :column_query
  def initialize host, port, keyspace
    @string_serializer = StringSerializer.get #new serializer object for writing
    @cluster           = HFactory.getOrCreateCluster("FooCluster", "#{host}:#{port}")
    @keyspace_op       = HFactory.createKeyspace(keyspace, cluster)
    @mutator           = HFactory.createMutator(keyspace_op, string_serializer)
    @column_query      = HFactory.createStringColumnQuery(keyspace_op)
  end

  def insert column_family, row_key, column_name, value
    mutator.insert(row_key, column_family, HFactory.createStringColumn(column_name, value));
  end

  def get column_family, row_key, column_name
    column_query.set_column_family(column_family).set_key(row_key).set_name(column_name)
    column_query.execute.get.value
  end
  
end

db = CassandraViaHector.new("localhost", 9160, "Keyspace1")
10000.times do |i|
  db.insert("Standard1", "#{i}", "rand_val", "#{rand}")
end

• download latest cassandra source 0.7
• git clone hector java client
• make sure you have maven (sudo apt-get install maven2)
• cd hector; ./release.sh (builds the release for you)