Class: Selekt::SourceStub

Inherits:
Object
  • Object
show all
Defined in:
lib/selekt/source_stub.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*fields) ⇒ SourceStub

Returns a new instance of SourceStub.



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# File 'lib/selekt/source_stub.rb', line 5

def initialize(*fields)
  @fields = fields.map { |f| f.to_sym }
  @rows = []
end

Instance Attribute Details

#fields ⇒ Object (readonly)

Returns the value of attribute fields.



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# File 'lib/selekt/source_stub.rb', line 3

def fields
  @fields
end

#rows ⇒ Object (readonly)

Returns the value of attribute rows.



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# File 'lib/selekt/source_stub.rb', line 3

def rows
  @rows
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/selekt/source_stub.rb', line 40

def ==(other)
  return false unless other.is_a?(Selekt::SourceStub)
  fields == other.fields && rows == other.rows
end

#add_row(row) ⇒ Object Also known as: <<, push 



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# File 'lib/selekt/source_stub.rb', line 10

def add_row(row)
  if row.is_a?(Hash)
    @rows << fields.map { |f| row[f] }
  else
    raise Selekt::StubError, "Row should have #{fields.size} values maximum" if fields.size < row.size
    @rows << fields.map.with_index { |_, i| row[i] }
  end
  return self
end

#add_rows(rows) ⇒ Object Also known as: concat 



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# File 'lib/selekt/source_stub.rb', line 23

def add_rows(rows)
  rows.each { |row| add_row(row) }
  return self
end

#size ⇒ Object Also known as: length 



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# File 'lib/selekt/source_stub.rb', line 36

def size
  @rows.size
end

#sql ⇒ Object 



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# File 'lib/selekt/source_stub.rb', line 30

def sql
  first_row_sql = [row_sql_with_names(rows[0])]
  other_row_sql = rows[1..-1].map { |row| row_sql_without_names(row) }
  [first_row_sql].concat(other_row_sql).join("\nUNION ALL\n")
end