Module: NoSE::Backend::FileBackend::RowMatcher

Included in:
DeleteStatementStep, IndexLookupStatementStep
Defined in:
lib/nose/backend/file.rb

Overview

Provide some helper functions which allow the matching of rows based on a set of list of conditions

Instance Method Summary collapse

Instance Method Details

#row_matches?(row, conditions) ⇒ Boolean

Check if a row matches the given condition

Returns:

  • (Boolean) 


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# File 'lib/nose/backend/file.rb', line 87

def row_matches?(row, conditions)
  row_matches_eq?(row, conditions) &&
    row_matches_range?(row, conditions)
end

#row_matches_eq?(row, conditions) ⇒ Boolean

Check if a row matches the given condition on equality predicates

Returns:

  • (Boolean) 


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# File 'lib/nose/backend/file.rb', line 94

def row_matches_eq?(row, conditions)
  @eq_fields.all? do |field|
    row[field.id] == conditions.find { |c| c.field == field }.value
  end
end

#row_matches_range?(row, conditions) ⇒ Boolean

Check if a row matches the given condition on the range predicate

Returns:

  • (Boolean) 


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# File 'lib/nose/backend/file.rb', line 102

def row_matches_range?(row, conditions)
  return true if @range_field.nil?

  range_cond = conditions.find { |c| c.field == @range_field }
  row[@range_field.id].send range_cond.operator, range_cond.value
end