Class: ActiveCMIS::Collection

Inherits:
Object
  • Object
show all
Includes:
Internal::Caching, Enumerable
Defined in:
lib/active_cmis/collection.rb

Overview

A Collection represents an atom feed, and can be used to lazily load data through paging

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Internal::Caching

included

Constructor Details

#initialize(repository, url, first_page = nil, &map_entry) ⇒ Collection

Returns a new instance of Collection.



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# File 'lib/active_cmis/collection.rb', line 15

def initialize(repository, url, first_page = nil, &map_entry)
  @repository = repository
  @url = URI.parse(url)

  @next = @url
  @elements = []
  @pages = []

  @map_entry = map_entry || Proc.new do |e|
    ActiveCMIS::Object.from_atom_entry(repository, e)
  end

  if first_page
    @next = first_page.xpath("at:feed/at:link[@rel = 'next']/@href", NS::COMBINED).first
    @pages[0] = first_page
  end
end

Instance Attribute Details

#repository ⇒ Repository (readonly)

The repository that contains this feed

Returns:



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# File 'lib/active_cmis/collection.rb', line 10

def repository
  @repository
end

#url ⇒ URI (readonly)

The basic link that represents the beginning of this feed

Returns:

  • (URI) 


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# File 'lib/active_cmis/collection.rb', line 13

def url
  @url
end

Instance Method Details

#[](index, length = nil) ⇒ Object Also known as: slice 



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# File 'lib/active_cmis/collection.rb', line 77

def [](index, length = nil)
  if length
    index = sanitize_index(index)
    range_get(index, index + length - 1)
  elsif Range === index
    range_get(sanitize_index(index.begin), index.exclude_end? ? sanitize_index(index.end) - 1 : sanitize_index(index.end))
  else
    at(index)
  end
end

#at(index) ⇒ Object 



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# File 'lib/active_cmis/collection.rb', line 63

def at(index)
  index = sanitize_index(index)
  if index < @elements.length
    @elements[index]
  elsif index > length
    nil
  else
    while @next && @elements.length < index
      receive_page
    end
    @elements[index]
  end
end

#each ⇒ Array

Returns:

  • (Array) 


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# File 'lib/active_cmis/collection.rb', line 99

def each
  length.times { |i| yield self[i] }
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_cmis/collection.rb', line 50

def empty?
  at(0)
  @elements.empty?
end

#first ⇒ Object 



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# File 'lib/active_cmis/collection.rb', line 89

def first
  at(0)
end

#inspect ⇒ String

Returns:

  • (String) 


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# File 'lib/active_cmis/collection.rb', line 109

def inspect
  "#<Collection %s>" % url
end

#last ⇒ Object

Gets all object and returns last



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# File 'lib/active_cmis/collection.rb', line 94

def last
  at(-1)
end

#length ⇒ Integer Also known as: size

Returns The length of the collection.

Returns:

  • (Integer) —

    The length of the collection



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# File 'lib/active_cmis/collection.rb', line 34

def length
  receive_page
  if @length.nil?
    i = 1
    while @next
      receive_page
      i += 1
    end
    @elements.length
  else
    @length
  end
end

#reload ⇒ void

This method returns an undefined value.



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# File 'lib/active_cmis/collection.rb', line 134

def reload
  @pages = []
  @elements = []
  @next = @url
  __reload
end

#reverse ⇒ Array

Returns:

  • (Array) 


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# File 'lib/active_cmis/collection.rb', line 129

def reverse
  to_a.reverse
end

#reverse_each ⇒ Array

Returns:

  • (Array) 


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# File 'lib/active_cmis/collection.rb', line 104

def reverse_each
  (length - 1).downto(0) { |i| yield self[i] }
end

#sort ⇒ Array

Returns:

  • (Array) 


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# File 'lib/active_cmis/collection.rb', line 124

def sort
  to_a.sort
end

#to_a ⇒ Array

Returns:

  • (Array) 


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# File 'lib/active_cmis/collection.rb', line 56

def to_a
  while @next
    receive_page
  end
  @elements
end

#to_s ⇒ String

Returns:

  • (String) 


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# File 'lib/active_cmis/collection.rb', line 114

def to_s
  to_a.to_s
end

#uniq ⇒ Array

Returns:

  • (Array) 


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# File 'lib/active_cmis/collection.rb', line 119

def uniq
  to_a.uniq
end