Class: Mongomatic::Cursor

Inherits:

Object

• Object
• Mongomatic::Cursor

show all

Includes:

Enumerable

Defined in:

lib/mongomatic/cursor.rb

Overview

cursor = User.find({"zip" => 94107})
user1 = cursor.next

User.find({"zip" => 94107}).each { |u| puts u["name"] }

User.find({"zip" => 94107}).count

Instance Attribute Summary (collapse)

• - (Object) mongo_cursor

  Returns the value of attribute mongo_cursor.

Instance Method Summary (collapse)

• - (Object) current_limit
• - (Object) current_skip
• - (Object) each
• - (Boolean) empty?

  Is the cursor empty? This method is much more efficient than doing cursor.count == 0.

• - (Cursor) initialize(obj_class, mongo_cursor) constructor

  A new instance of Cursor.

• - (Object) limit(number_to_return)
• - (Object) method_missing(name, *args)
• - (Object) next_document (also: #next)
• - (Object) skip(number_to_skip)
• - (Object) sort(key_or_list, direction = nil)

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# File 'lib/mongomatic/cursor.rb', line 14

def initialize(obj_class, mongo_cursor)
  @obj_class    = obj_class
  @mongo_cursor = mongo_cursor
end

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# File 'lib/mongomatic/cursor.rb', line 19

def method_missing(name, *args)
  @mongo_cursor.send name, *args
end

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# File 'lib/mongomatic/cursor.rb', line 12

def mongo_cursor
  @mongo_cursor
end

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# File 'lib/mongomatic/cursor.rb', line 42

def current_limit
  @mongo_cursor.limit
end

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# File 'lib/mongomatic/cursor.rb', line 50

def current_skip
  @mongo_cursor.skip
end

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# File 'lib/mongomatic/cursor.rb', line 36

def each
  @mongo_cursor.each do |doc|
    yield(@obj_class.new(doc, false))
  end
end

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# File 'lib/mongomatic/cursor.rb', line 24

def empty?
  @mongo_cursor.has_next? == false
end

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# File 'lib/mongomatic/cursor.rb', line 46

def limit(number_to_return)
  @mongo_cursor.limit(number_to_return); self
end

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# File 'lib/mongomatic/cursor.rb', line 28

def next_document
  if doc = @mongo_cursor.next_document
    @obj_class.new(doc, false)
  end
end

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# File 'lib/mongomatic/cursor.rb', line 54

def skip(number_to_skip)
  @mongo_cursor.skip(number_to_skip); self
end

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# File 'lib/mongomatic/cursor.rb', line 58

def sort(key_or_list, direction = nil)
  @mongo_cursor.sort(key_or_list, direction); self
end