Class: QME::MapReduce::Builder::Context

Inherits:
OpenStruct
  • Object
show all
Defined in:
lib/qme/map/map_reduce_builder.rb

Overview

Utility class used to supply a binding to Erb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(db, vars) ⇒ Context

Create a new context entry is added as an accessor of the new Context

Parameters:

  • vars (Hash) —

    a hash of parameter names (String) and values (Object). Each



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# File 'lib/qme/map/map_reduce_builder.rb', line 16

def initialize(db, vars)
  super(Context.add_defaults(vars))
  @db = db
end

Class Method Details

.add_defaults(vars) ⇒ Object

Add default parameter values if not specified



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# File 'lib/qme/map/map_reduce_builder.rb', line 28

def self.add_defaults(vars)
  if !vars.has_key?('enable_logging')
    vars['enable_logging'] = false
  end
  if !vars.has_key?('enable_rationale')
    vars['enable_rationale'] = false
  end
  if !vars.has_key?('short_circuit')
    vars['short_circuit'] = false
  end
  vars
end

Instance Method Details

#get_binding ⇒ Binding

Get a binding that contains all the instance variables

Returns:

  • (Binding) 


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# File 'lib/qme/map/map_reduce_builder.rb', line 23

def get_binding
  binding
end

#init_js_frameworks ⇒ Object

Inserts any library code into the measure JS. JS library code is loaded from three locations: the js directory of the quality-measure-engine project, the js sub-directory of the current directory (e.g. measures/js), and the bundles collection of the current database (used by the Rails Web application).



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# File 'lib/qme/map/map_reduce_builder.rb', line 45

def init_js_frameworks
  result = ''
  result << 'if (typeof(map)=="undefined") {'
  result << "\n"
  @db['bundles'].find.each do |bundle|
    (bundle['extensions'] || []).each do |ext|
      result << "#{ext}();\n"
    end
  end
  result << "}\n"
  result
end