Class: TinyMongo::Cursor

Inherits:
Object
  • Object
show all
Includes:
Enumerable, Mongo::Conversions
Defined in:
lib/tinymongo/cursor.rb

Instance Method Summary collapse

Constructor Details

#initialize(cursor, model_class) ⇒ Cursor

instance attributes in Mongo::Cursor



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# File 'lib/tinymongo/cursor.rb', line 8

def initialize(cursor, model_class)
  @_tinymongo_cursor = cursor
  @_tinymongo_model_class = model_class
end

Instance Method Details

#count ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 17

def count
  @_tinymongo_cursor.count
end

#each ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 26

def each
  num_returned = 0
  while(has_next? && (@_tinymongo_cursor.instance_variable_get(:@limit) <= 0 ||
    num_returned < @_tinymongo_cursor.instance_variable_get(:@limit)))
    yield next!
    num_returned += 1
  end
end

#explain ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 39

def explain
  @_tinymongo_cursor.explain
end

#forEach(*args) ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 35

def forEach(*args)
  each(*args)
end

#has_next? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tinymongo/cursor.rb', line 43

def has_next?
  @_tinymongo_cursor.has_next?
end

#hasNext ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 47

def hasNext
  has_next?
end

#limit(number_to_return = nil) ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 51

def limit(number_to_return=nil)
  call_and_wrap_retval_in_tinymongo_cursor(:limit, [number_to_return])
end

#mongo_cursor ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 13

def mongo_cursor
  @_tinymongo_cursor
end

#next! ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 55

def next!
  doc = @_tinymongo_cursor.next_document
  Helper.deserialize_hashes_in(doc)
end

#next_document ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 60

def next_document
  next!
end

#nextDocument ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 64

def nextDocument
  next!
end

#size ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 21

def size
  num = (count - skip)
  num = (num > 0) ? (((num > limit) && limit != 0) ? limit : num) : 0
end

#skip(number_to_skip = nil) ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 68

def skip(number_to_skip=nil)
  call_and_wrap_retval_in_tinymongo_cursor(:skip, [number_to_skip])
end

#sort(key_or_list, direction = nil) ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 72

def sort(key_or_list, direction=nil)
  if(key_or_list.kind_of? Hash)
    key_or_list = key_or_list.map { |k, v| [k.to_s, convert_ascending_descending(v)] }
  elsif(key_or_list.kind_of? Array)
    key_or_list = key_or_list.map { |o| (o.kind_of? Array) ? [o[0].to_s, convert_ascending_descending(o[1])] : nil }.compact
  end
    
  call_and_wrap_retval_in_tinymongo_cursor(:sort, [key_or_list, direction])
end

#to_a ⇒ Object 



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# File 'lib/tinymongo/cursor.rb', line 82

def to_a
  return [] if @_tinymongo_cursor.nil?
  
  hashes = @_tinymongo_cursor.to_a
  hashes.map { |hash| Helper.deserialize_hashes_in(hash) }
end