Class: ADT::Column

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/adt/column.rb

Defined Under Namespace

Classes: LengthError, NameError

Constant Summary collapse

TYPE_CAST_CLASS =

in use for SAGE BOB50

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{
  1 => ADT::ColumnType::Boolean,
  3 => ADT::ColumnType::Date,
  4 => ADT::ColumnType::String,
  6 => ADT::ColumnType::Binary,
  10 => ADT::ColumnType::Double,
  11 => ADT::ColumnType::Integer,
  12 => ADT::ColumnType::ShortInteger,
  14 => ADT::ColumnType::DateTime,
  15 => ADT::ColumnType::Integer, # In reality an "autoinc" but we don't deal with that
  17 => ADT::ColumnType::CurDouble
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, type, length) ⇒ Column

Initialize a new ADT::Column

Parameters:

  • name (String)
  • type (String)
  • length (Integer) 


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# File 'lib/adt/column.rb', line 33

def initialize(name, type, length)
  @name = clean(name)
  @type = type
  @length = length

  validate_length
  validate_name
end

Instance Attribute Details

#length ⇒ Object (readonly)

Returns the value of attribute length.



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# File 'lib/adt/column.rb', line 8

def length
  @length
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/adt/column.rb', line 8

def name
  @name
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/adt/column.rb', line 8

def type
  @type
end

Instance Method Details

#downcase ⇒ Object 



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# File 'lib/adt/column.rb', line 59

def downcase
  name.downcase
end

#flag(length = 0) ⇒ Object

Return the flag to decode the data

Parameters:

  • length (Integer) (defaults to: 0) 


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# File 'lib/adt/column.rb', line 45

def flag(length = 0)
  flag = type_cast_class.flag
  return flag + length.to_s if flag.eql? 'A'

  flag
end

#to_hash ⇒ Hash

Returns a Hash with :name, :type, :length, and :decimal keys

Returns:

  • (Hash) 


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# File 'lib/adt/column.rb', line 55

def to_hash
  {name: name, type: type, length: length}
end

#underscored_name ⇒ String

Underscored name

This is the column name converted to underscore format. For example, MyColumn will be returned as my_column.

Returns:

  • (String) 


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# File 'lib/adt/column.rb', line 69

def underscored_name
  @underscored_name ||= begin
    name.gsub(/::/, '/')
      .gsub(/([A-Z]+)([A-Z][a-z])/, '\1_\2')
      .gsub(/([a-z\d])([A-Z])/, '\1_\2')
      .tr('-', '_')
      .downcase
  end
end