Class: Activecube::Graphql::ParseTree::Element

Inherits:
Object
  • Object
show all
Defined in:
lib/activecube/graphql/parse_tree.rb

Constant Summary collapse

TYPENAME = 
'__typename'
KEY_FIELD_PREFIX = 
'_aq.'
NULLABLE_OPERATORS = 
[:eq,:not_eq,:is,:not]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cube, context_node, parent = nil) ⇒ Element

Returns a new instance of Element.



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# File 'lib/activecube/graphql/parse_tree.rb', line 13

def initialize cube, context_node, parent = nil

  @cube = cube
  @parent = parent

  @name = context_node.name
  @key = parent ? (parent.key ? "#{parent.key}.#{name}" : KEY_FIELD_PREFIX+name ) : nil

  @context_node = context_node
  @ast_node = context_node.ast_node

  @arguments =  sort_node_arguments ast_node, context_node.arguments.to_h


  if parent
    @definition = context_node.definitions.first.name
    if parent.dimension
      @dimension = parent.dimension
      @field = (parent.field || dimension)[definition.to_sym]
      raise Activecube::InputArgumentError, "#{definition} not implemented for #{key} in cube #{cube.name}" unless @field
    elsif !parent.metric
      if !(@metric = (cube.metrics && cube.metrics[definition.to_sym])) && !(@dimension = (cube.dimensions && cube.dimensions[definition.to_sym]))
        raise Activecube::InputArgumentError, "Metric or dimension #{definition} for #{key} not defined for cube #{cube.name}"
      end
    end
  end

  @children = context_node.typed_children.values.map(&:values).flatten.uniq(&:name).
      select{|child| child.name!=TYPENAME || union? }.
      collect do |child|
    Element.new cube, child, self
  end

end

Instance Attribute Details

#arguments ⇒ Object (readonly)

Returns the value of attribute arguments.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def arguments
  @arguments
end

#ast_node ⇒ Object (readonly)

Returns the value of attribute ast_node.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def ast_node
  @ast_node
end

#children ⇒ Object (readonly)

Returns the value of attribute children.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def children
  @children
end

#context_node ⇒ Object (readonly)

Returns the value of attribute context_node.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def context_node
  @context_node
end

#cube ⇒ Object (readonly)

Returns the value of attribute cube.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def cube
  @cube
end

#definition ⇒ Object (readonly)

Returns the value of attribute definition.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def definition
  @definition
end

#dimension ⇒ Object (readonly)

Returns the value of attribute dimension.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def dimension
  @dimension
end

#field ⇒ Object (readonly)

Returns the value of attribute field.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def field
  @field
end

#key ⇒ Object (readonly)

Returns the value of attribute key.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def key
  @key
end

#metric ⇒ Object (readonly)

Returns the value of attribute metric.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def metric
  @metric
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def name
  @name
end

#parent ⇒ Object (readonly)

Returns the value of attribute parent.



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# File 'lib/activecube/graphql/parse_tree.rb', line 11

def parent
  @parent
end

Instance Method Details

#append_query(query) ⇒ Object 



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# File 'lib/activecube/graphql/parse_tree.rb', line 75

def append_query query
  if parent

    if metric
      query = query.measure({key => apply_args(metric)})
    elsif dimension
      if children.empty?
        query = query.slice({key => apply_args(field || dimension)})
      elsif !arguments.empty?
        query = apply_args query
      end
    end

  else
    query = apply_args query, ( arguments && arguments.except('options'))
    query = apply_args query, ( arguments && arguments['options'] )
  end

  children.each do |child|
    query = child.append_query query
  end

  query
end

#sort_node_arguments(ast_node, arguments) ⇒ Object 



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# File 'lib/activecube/graphql/parse_tree.rb', line 48

def sort_node_arguments ast_node, arguments
  if (options = arguments['options']).kind_of?(Hash)
    if opt_keys_args = context_node.ast_node.arguments.detect{|x| x.name=='options'}.value.try(:arguments)
      options_keys = opt_keys_args.map{|x|
        x.name.underscore.to_sym
      }
    elsif opt_keys_args_opt_name = context_node.ast_node.arguments.detect{|x| x.name=='options'}.value.try(:name)
      options_keys = context_node.query.variables[opt_keys_args_opt_name].arguments.argument_values.map{|x, y|
        x.underscore.to_sym
      }
    end

    arguments['options'] = Hash[
        options_keys.collect{|key|
          raise "Unmatched key #{key}" unless options[key]
          [key, options[key]]
        }

    ]
  end
  arguments
end

#union? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/activecube/graphql/parse_tree.rb', line 71

def union?
  context_node.return_type.kind_of? GraphQL::UnionType
end