softmotions / ejdb-ruby

Project archived in favor of ejdb2. Ruby binding for EJDB database engine

Embedded JSON database library Ruby binding

Installation

Required tools/system libraries:

• gcc
• ruby >= 1.9.1 and ruby-dev
• EJDB C library libtcejdb-dev (from sources or as debian packages)

(A) Installing directly from sources

git clone https://github.com/Softmotions/ejdb-ruby.git
cd ./ejdb-ruby
make  
sudo make install

One snippet intro

require "rbejdb"

#Open zoo DB
jb = EJDB.open("zoo", EJDB::DEFAULT_OPEN_MODE | EJDB::JBOTRUNC)

parrot1 = {
    "name" => "Grenny",
    "type" => "African Grey",
    "male" => true,
    "age" => 1,
    "birthdate" => Time.now,
    "likes" => ["green color", "night", "toys"],
    "extra1" => nil
}
parrot2 = {
    "name" => "Bounty",
    "type" => "Cockatoo",
    "male" => false,
    "age" => 15,
    "birthdate" => Time.now,
    "likes" => ["sugar cane"],
    "extra1" => nil
}

jb.save("parrots", parrot1, parrot2)
puts "Grenny OID: #{parrot1["_id"]}"
puts "Bounty OID: #{parrot2["_id"]}"

results = jb.find("parrots", {"likes" => "toys"}, {"$orderby" => {"name" => 1}})

puts "Found #{results.count} parrots"

results.each { |res|
  puts "#{res['name']} likes toys!"
}

results.close #It's not mandatory to close cursor explicitly
jb.close #Close the database

ejdb-ruby's Issues

find is not working

I've successfully installed the ejdb ruby bindings according to the installation guide.
Creating a new database/collection works, but when I try to execute the "One snippet intro" the following exception is raised when it comes to find the data:

results = jb.find("parrots", {"likes" => "toys"}, {"$orderby" => {"name" => 1}})
TypeError: wrong argument type Hash (expected Data)

The same exception is raised with find_one

Here's my setup:

• Mac OS X 10.8.5
• Ruby 2.0 p247
• Installed ejdb via homebrew (v1.1.24)