Class: ROM::SQL::QualifiedAttribute Private

Inherits:
Object
  • Object
show all
Extended by:
Cache
Defined in:
lib/rom/sql/qualified_attribute.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Used as a pair table name + field name. Similar to Sequel::SQL::QualifiedIdentifier but we don’t want Sequel types to leak into ROM

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dataset, attribute) ⇒ QualifiedAttribute

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of QualifiedAttribute.



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# File 'lib/rom/sql/qualified_attribute.rb', line 31

def initialize(dataset, attribute)
  @dataset = dataset
  @attribute = attribute
end

Instance Attribute Details

#attribute ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Attribute (field, column) name



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# File 'lib/rom/sql/qualified_attribute.rb', line 23

def attribute
  @attribute
end

#dataset ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Dataset (table) name



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# File 'lib/rom/sql/qualified_attribute.rb', line 18

def dataset
  @dataset
end

Class Method Details

.[](*args) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/rom/sql/qualified_attribute.rb', line 26

def self.[](*args)
  fetch_or_store(args) { new(*args) }
end

Instance Method Details

#sql_literal_append(ds, sql) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Used by Sequel for building SQL statements



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# File 'lib/rom/sql/qualified_attribute.rb', line 39

def sql_literal_append(ds, sql)
  ds.qualified_identifier_sql_append(sql, dataset, attribute)
end

#to_sym ⇒ Symbol

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Convinient interface for attribute names

Returns:

  • (Symbol) 


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# File 'lib/rom/sql/qualified_attribute.rb', line 48

def to_sym
  attribute
end