Class: StandardLedger::Projector::TriggerDsl

Inherits:
Object
  • Object
show all
Defined in:
lib/standard_ledger/projector.rb

Overview

Internal collector for the ‘:trigger`-mode block-DSL form. Captures the `rebuild_sql “…”` clause’s SQL string. The trigger itself is owned by the host (created in a Rails migration); the gem only records this rebuild SQL so ‘StandardLedger.rebuild!` can recompute the projection from the log when invoked. Like `:sql` mode, the SQL must be expressible as a single statement with `:target_id` bound from each target’s id at rebuild time.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#rebuild_sql_text ⇒ Object (readonly)

Returns the value of attribute rebuild_sql_text.



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# File 'lib/standard_ledger/projector.rb', line 512

def rebuild_sql_text
  @rebuild_sql_text
end

Instance Method Details

#rebuild_sql(sql) ⇒ Object 



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# File 'lib/standard_ledger/projector.rb', line 514

def rebuild_sql(sql)
  unless sql.is_a?(String)
    raise ArgumentError, "rebuild_sql requires a SQL string; got #{sql.class}"
  end
  unless @rebuild_sql_text.nil?
    raise ArgumentError,
          "rebuild_sql called more than once in the same projects_onto block; " \
          ":trigger mode supports exactly one rebuild_sql clause per projection"
  end
  @rebuild_sql_text = sql
end