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Module: Arel::FactoryMethods

Do not use. This module is for internal use only.
Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Included In:
DeleteManager, InsertManager, Nodes::Addition, Nodes::As, Nodes::Ascending, Nodes::Between, Nodes::Binary, Nodes::BindParam, Nodes::BitwiseAnd, Nodes::BitwiseNot, Nodes::BitwiseOr, Nodes::BitwiseShiftLeft, Nodes::BitwiseShiftRight, Nodes::BitwiseXor, Nodes::BoundSqlLiteral, Nodes::Case, Nodes::Casted, Nodes::Comment, Nodes::Concat, Nodes::Contains, Nodes::Count, Nodes::Cte, Nodes::CurrentRow, Nodes::DeleteStatement, Nodes::Descending, Nodes::Distinct, Nodes::Division, Nodes::DoesNotMatch, Nodes::Else, Nodes::Equality, Nodes::Extract, Nodes::False, Nodes::Filter, Nodes::Following, Nodes::Fragments, Nodes::Function, Nodes::GreaterThan, Nodes::GreaterThanOrEqual, Nodes::Grouping, Nodes::HomogeneousIn, Nodes::In, Nodes::InfixOperation, Nodes::InsertStatement, Nodes::IsDistinctFrom, Nodes::IsNotDistinctFrom, Nodes::JoinSource, Nodes::LessThan, Nodes::LessThanOrEqual, Nodes::Matches, Nodes::Multiplication, Nodes::NamedFunction, Nodes::NamedWindow, Nodes::Nary, Nodes::Node, Nodes::NodeExpression, Nodes::NotEqual, Nodes::NotIn, Nodes::NotRegexp, Nodes::NullsFirst, Nodes::NullsLast, Nodes::Ordering, Nodes::Over, Nodes::Overlaps, Nodes::Preceding, Nodes::Quoted, Nodes::Range, Nodes::Regexp, Nodes::Rows, Nodes::SelectCore, Nodes::SelectStatement, Nodes::Subtraction, Nodes::TableAlias, Nodes::True, Nodes::Unary, Nodes::UnaryOperation, Nodes::UnqualifiedColumn, Nodes::UpdateStatement, Nodes::ValuesList, Nodes::When, Nodes::Window, Nodes::With, Nodes::WithRecursive, SelectManager, Table, TreeManager, UpdateManager
Defined in: activerecord/lib/arel/factory_methods.rb

Overview

Methods for creating various nodes

Instance Method Summary

Instance Method Details

#cast(name, type)

[ GitHub ] 

  


# File 'activerecord/lib/arel/factory_methods.rb', line 49



def cast(name, type)
  Nodes::NamedFunction.new "CAST", [name.as(type)]
end


  








  

    #coalesce(*exprs)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/arel/factory_methods.rb', line 45



def coalesce(*exprs)
  Nodes::NamedFunction.new "COALESCE", exprs
end


  








  

    #create_and(clauses)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/arel/factory_methods.rb', line 27



def create_and(clauses)
  Nodes::And.new clauses
end


  








  

    #create_false  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/arel/factory_methods.rb', line 11



def create_false
  Arel::Nodes::False.new
end


  








  

    #create_join(to, constraint = nil, klass = Nodes::InnerJoin)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/arel/factory_methods.rb', line 19



def create_join(to, constraint = nil, klass = Nodes::InnerJoin)
  klass.new(to, constraint)
end


  








  

    #create_on(expr)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/arel/factory_methods.rb', line 31



def create_on(expr)
  Nodes::On.new expr
end


  








  

    #create_string_join(to)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/arel/factory_methods.rb', line 23



def create_string_join(to)
  create_join to, nil, Nodes::StringJoin
end


  








  

    #create_table_alias(relation, name)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/arel/factory_methods.rb', line 15



def create_table_alias(relation, name)
  Nodes::TableAlias.new(relation, name)
end


  








  

    #create_true  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/arel/factory_methods.rb', line 7



def create_true
  Arel::Nodes::True.new
end


  








  

    #grouping(expr)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/arel/factory_methods.rb', line 35



def grouping(expr)
  Nodes::Grouping.new expr
end


  








  

    #lower(column)  
  



  

    

Create a LOWER() function


  



  [ GitHub ]


  

  


# File 'activerecord/lib/arel/factory_methods.rb', line 41



def lower(column)
  Nodes::NamedFunction.new "LOWER", [Nodes.build_quoted(column)]
end