more examples

examples/admin.rb

@@ -35,6 +35,7 @@ admin = db.admin
 # Validate returns a hash if all is well or raises an exception if there is a
 # problem.
 info = admin.validate_collection(coll.name)
+puts "valid = #{info['ok']}"
 puts info['result']
 
 # Destroy the collection

examples/cursor.rb

@@ -0,0 +1,47 @@
+$LOAD_PATH[0,0] = File.join(File.dirname(__FILE__), '..', 'lib')
+require 'mongo'
+require 'pp'
+
+include XGen::Mongo::Driver
+
+host = ENV['MONGO_RUBY_DRIVER_HOST'] || 'localhost'
+port = ENV['MONGO_RUBY_DRIVER_PORT'] || XGen::Mongo::Driver::Mongo::DEFAULT_PORT
+
+puts "Connecting to #{host}:#{port}"
+db = Mongo.new(host, port).db('ruby-mongo-examples')
+coll = db.collection('test')
+
+# Erase all records from collection, if any
+coll.clear
+
+# Insert 3 records
+3.times { |i| coll.insert({'a' => i+1}) }
+
+# Cursors don't run their queries until you actually attempt to retrieve data
+# from them.
+
+# Find returns a Cursor, which is Enumerable. You can iterate:
+coll.find().each { |row| pp row }
+
+# You can turn it into an array
+array = coll.find().to_a
+
+# You can iterate after turning it into an array (the cursor will iterate over
+# the copy of the array that it saves internally.)
+cursor = coll.find()
+array = cursor.to_a
+cursor.each { |row| pp row }
+
+# You can get the next object
+first_object = coll.find().next_object
+
+# next_object returns nil if there are no more objects that match
+cursor = coll.find()
+obj = cursor.next_object
+while obj
+  pp obj
+  obj = cursor.next_object
+end
+
+# Destroy the collection
+coll.drop