Class: Pal::Operation::Projection

Inherits:
Object
  • Object
show all
Includes:
Log
Defined in:
lib/pal/operation/projection.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Log

#log_debug, #log_error, #log_info, #log_warn

Constructor Details

#initialize(type, property) ⇒ Projection

Returns a new instance of Projection.

Parameters:

  • type (String)
  • property (String) 


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# File 'lib/pal/operation/projection.rb', line 18

def initialize(type, property)
  @type = type
  @property = property
end

Instance Attribute Details

#property ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/pal/operation/projection.rb', line 14

def property
  @property
end

#type ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/pal/operation/projection.rb', line 11

def type
  @type
end

Instance Method Details

#process(group_by_rules, groups, column_headers) ⇒ Array

Returns rows, column_headers.

Parameters:

  • group_by_rules (Array<String>) —

    # export columns

  • groups (Hash)
  • column_headers (Hash)

Returns:

  • (Array) —

    rows, column_headers



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# File 'lib/pal/operation/projection.rb', line 27

def process(group_by_rules, groups, column_headers)
  log_info("Calling down to projection impl [#{type}]")
  _process_impl(group_by_rules, groups, column_headers)
end

#processable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pal/operation/projection.rb', line 33

def processable?
  !(@type.nil? || @property.nil?)
end