Class: Aquel::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/aquel/context.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(block) ⇒ Context

Returns a new instance of Context.



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# File 'lib/aquel/context.rb', line 5

def initialize(block)
  @block = block
  @find_by_block = {}
  @header = false
end

Instance Attribute Details

#document_block ⇒ Object (readonly)

Returns the value of attribute document_block.



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# File 'lib/aquel/context.rb', line 3

def document_block
  @document_block
end

#find_by_block ⇒ Object (readonly)

Returns the value of attribute find_by_block.



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# File 'lib/aquel/context.rb', line 3

def find_by_block
  @find_by_block
end

#item_block ⇒ Object (readonly)

Returns the value of attribute item_block.



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# File 'lib/aquel/context.rb', line 3

def item_block
  @item_block
end

#items_block ⇒ Object (readonly)

Returns the value of attribute items_block.



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# File 'lib/aquel/context.rb', line 3

def items_block
  @items_block
end

#split_block ⇒ Object (readonly)

Returns the value of attribute split_block.



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# File 'lib/aquel/context.rb', line 3

def split_block
  @split_block
end

Instance Method Details

#document(&block) ⇒ Object 



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# File 'lib/aquel/context.rb', line 52

def document(&block)
  @document_block = block
end

#execute(attributes) ⇒ Object 



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# File 'lib/aquel/context.rb', line 11

def execute(attributes)
  instance_eval(&@block)

  items = []
  document = document_block.call(attributes.equal_values)

  if items_block
    items_block.call(document).each do |item|
      value = split_block.call(item)
      items << (value.kind_of?(Array) ? value : [value])
    end
  elsif find_by_block.size > 0
    find_by_block.each do |k, v|
      v.call(attributes.equal_values[k], document).each do |item|
        value = split_block.call(item)
        items << (value.kind_of?(Array) ? value : [value])
      end
    end
  else
    while item = item_block.call(document)
      items << split_block.call(item)
    end
  end

  if @header
    header = items.shift.map(&:downcase)
  else
    header = (1..(items.first.size)).to_a
  end

  items.map do |itm|
    item = {}
    itm.each_with_index { |v, i| item[header[i]] = v }
    item
  end
ensure
  if document.respond_to?(:close)
    document.close
  end
end

#find_by(name, &block) ⇒ Object 



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# File 'lib/aquel/context.rb', line 68

def find_by(name, &block)
  @find_by_block[name] = block
end

#has_header ⇒ Object 



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# File 'lib/aquel/context.rb', line 72

def has_header
  @header = true
end

#item(&block) ⇒ Object 



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# File 'lib/aquel/context.rb', line 56

def item(&block)
  @item_block = block
end

#items(&block) ⇒ Object 



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# File 'lib/aquel/context.rb', line 64

def items(&block)
  @items_block = block
end

#split(&block) ⇒ Object 



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# File 'lib/aquel/context.rb', line 60

def split(&block)
  @split_block = block
end