Module: Pluckr::Aliases

Defined in:

lib/pluckr/aliases.rb

Overview

Single source of truth for the flat column aliases used in generated SQL.

The SQL stays flat; nesting lives in the alias path:

users.id                 AS "id"
subscriptions.name       AS "subscription.name"
subscriptions.id         AS "__pluckr.subscription.present"

The result builder reads the same helpers back, so the encoding is never duplicated between the compiler and the hydrator.

Constant Summary

SEPARATOR =

"."

PRESENCE_PREFIX =

"__pluckr"

PRESENCE_SUFFIX =

"present"

TABLE_PREFIX =

"pluckr"

Class Method Summary

• .output(path, name) ⇒ Object

  Output alias for a value node, e.g.

• .presence(path) ⇒ Object

  Hidden marker telling the hydrator whether a nested one row exists at all.

• .table(path) ⇒ Object

  Table alias for a joined singular association.

Class Method Details

.output(path, name) ⇒ Object

Output alias for a value node, e.g. ["subscription"], :name => "subscription.name"

# File 'lib/pluckr/aliases.rb', line 23

def output(path, name)
  (path + [name]).join(SEPARATOR)
end

.presence(path) ⇒ Object

Hidden marker telling the hydrator whether a nested one row exists at all.

# File 'lib/pluckr/aliases.rb', line 28

def presence(path)
  ([PRESENCE_PREFIX] + path + [PRESENCE_SUFFIX]).join(SEPARATOR)
end

.table(path) ⇒ Object

Table alias for a joined singular association.

# File 'lib/pluckr/aliases.rb', line 33

def table(path)
  ([TABLE_PREFIX] + path).join("_")
end