Class: Poliqarp::QueryResult

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/poliqarpr/query_result.rb

Overview

Author

Aleksander Pohl ([email protected])

License

MIT License

The query result class is used to paginate results of the query. Each query result has information about its context (the next and previous page).

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(page, page_count, page_size, client, query) ⇒ QueryResult

Returns a new instance of QueryResult.



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# File 'lib/poliqarpr/query_result.rb', line 13

def initialize(page, page_count, page_size, client, query)
  @page = page
  @page_count = page_count
  @page_size = page_size
  @client = client
  @query = query
  @excerpts = []
end

Instance Attribute Details

#page ⇒ Object

Returns the value of attribute page.



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# File 'lib/poliqarpr/query_result.rb', line 11

def page
  @page
end

#page_count ⇒ Object

Returns the value of attribute page_count.



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# File 'lib/poliqarpr/query_result.rb', line 11

def page_count
  @page_count
end

#page_size ⇒ Object

Returns the value of attribute page_size.



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# File 'lib/poliqarpr/query_result.rb', line 11

def page_size
  @page_size
end

#query ⇒ Object

Returns the value of attribute query.



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# File 'lib/poliqarpr/query_result.rb', line 11

def query
  @query
end

Instance Method Details

#<<(excerpt) ⇒ Object

Adds excerpt to the query result



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# File 'lib/poliqarpr/query_result.rb', line 23

def <<(excerpt)
  @excerpts << excerpt
end

#==(other) ⇒ Object

Two excerpts are equal iff their page number, page count, query and page size are equal.



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# File 'lib/poliqarpr/query_result.rb', line 45

def ==(other)
  return false unless other.is_a? QueryResult
  @page == other.page && @page_count == other.page_count &&
    @query == other.query && @page_size == other.page_size
end

#[](index) ⇒ Object

Returns excerpt with given index.



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# File 'lib/poliqarpr/query_result.rb', line 39

def [](index)
  @excerpts[index]
end

#each ⇒ Object

Allows to iterate over the results stored in the result



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# File 'lib/poliqarpr/query_result.rb', line 28

def each
  @excerpts.each{|e| yield e}
end

#next_page ⇒ Object

Return the next page of the query result



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# File 'lib/poliqarpr/query_result.rb', line 60

def next_page
  if @page < @page_count
    @client.find(@query, :page_size => @page_size, 
                 :page_index => @page + 1) 
  end
end

#previous_page ⇒ Object

Returns the previous page of the query result



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# File 'lib/poliqarpr/query_result.rb', line 52

def previous_page
  if @page > 1
    @client.find(@query, :page_size => @page_size, 
                 :page_index => @page - 1) 
  end
end

#size ⇒ Object

Returns the number of excerpts stored in this page (query result)



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# File 'lib/poliqarpr/query_result.rb', line 68

def size
  @excerpts.size
end