Class: ROM::SQL::ProjectionDSL
Overview
Projection DSL used in reading API (select
, select_append
etc.)
Instance Method Summary collapse
-
#`(value) ⇒ Attribute
Return a string literal that will be directly used in an SQL statement or query.
-
#function(name, *attrs) ⇒ Rom::SQL::Function
(also: #f)
Return a SQL function with value
Any
. - #respond_to_missing?(name, include_private = false) ⇒ Boolean private
Constructor Details
This class inherits a constructor from ROM::SQL::DSL
Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#method_missing(meth, *args, &block) ⇒ Object (private)
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/projection_dsl.rb', line 52 def method_missing(meth, *args, &block) if schema.key?(meth) schema[meth] else type = type(meth) if type if args.empty? ::ROM::SQL::Function.new(type, schema: schema) else ::ROM::SQL::Attribute[type].value(args[0]) end else super end end end |
Instance Method Details
#`(value) ⇒ Attribute
Return a string literal that will be directly used in an SQL statement or query
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# File 'lib/rom/sql/projection_dsl.rb', line 23 def `(value) expr = ::Sequel.lit(value) ::ROM::SQL::Attribute.new(type(:string)).(sql_expr: expr) end |
#function(name, *attrs) ⇒ Rom::SQL::Function Also known as: f
Return a SQL function with value Any
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# File 'lib/rom/sql/projection_dsl.rb', line 39 def function(name, *attrs) ::ROM::SQL::Function.new(::ROM::Types::Any, schema: schema).public_send(name, *attrs) end |
#respond_to_missing?(name, include_private = false) ⇒ Boolean
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/projection_dsl.rb', line 45 def respond_to_missing?(name, include_private = false) super || type(name) end |