Class: AWS::Core::PageResult

Inherits:
Array
  • Object
show all
Defined in:
lib/aws/core/page_result.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(collection, items, per_page, next_token) ⇒ PageResult

Returns a new instance of PageResult.

Parameters:

  • collection (Collection) —

    The collection that was used to request this page of results. The collection should respond to #page and accept a :next_token option.

  • items (Array) —

    An array of result items that represent a page of results.

  • per_page (Integer) —

    The number of requested items for this page of results. If the count of items is smaller than per_page then this is the last page of results.

  • next_token (String) —

    (nil) A token that can be passed to the



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# File 'lib/aws/core/page_result.rb', line 46

def initialize collection, items, per_page, next_token
  @collection = collection
  @per_page = per_page
  @next_token = next_token
  super(items)
end

Instance Attribute Details

#collection ⇒ Collection (readonly)

Returns the collection that was used to populated this page of results.

Returns:

  • (Collection) —

    Returns the collection that was used to populated this page of results.



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# File 'lib/aws/core/page_result.rb', line 20

def collection
  @collection
end

#next_token ⇒ String (readonly)

Returns An opaque token that can be passed the #page method of the collection that returned this page of results. This next token behaves as a pseudo offset. If next_token is nil then there are no more results for the collection.

Returns:

  • (String) —

    An opaque token that can be passed the #page method of the collection that returned this page of results. This next token behaves as a pseudo offset. If next_token is nil then there are no more results for the collection.



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# File 'lib/aws/core/page_result.rb', line 31

def next_token
  @next_token
end

#per_page ⇒ Integer (readonly)

Returns the maximum number of results per page. The final page in a collection may return fewer than :per_page items (e.g. :per_page is 10 and there are only 7 items).

Returns:

  • (Integer) —

    Returns the maximum number of results per page. The final page in a collection may return fewer than :per_page items (e.g. :per_page is 10 and there are only 7 items).



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# File 'lib/aws/core/page_result.rb', line 25

def per_page
  @per_page
end

Instance Method Details

#last_page? ⇒ Boolean

Returns true if this is the last page of results.

Returns:

  • (Boolean) —

    Returns true if this is the last page of results.



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# File 'lib/aws/core/page_result.rb', line 64

def last_page?
  next_token.nil?
end

#more? ⇒ Boolean

Returns true if there are more pages of results.

Returns:

  • (Boolean) —

    Returns true if there are more pages of results.



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# File 'lib/aws/core/page_result.rb', line 69

def more?
  !!next_token
end

#next_page ⇒ PageResult

Returns:

Raises:

  • (RuntimeError) —

    Raises a runtime error when called against a collection that has no more results (i.e. #last_page? == true).



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# File 'lib/aws/core/page_result.rb', line 56

def next_page
  if last_page?
    raise 'unable to get the next page, already at the last page'
  end
  collection.page(:per_page => per_page, :next_token => next_token)
end