Class: ActiveRecord::ConnectionAdapters::Sqlserver::CoreExt::ExplainSubscriber

Inherits:
Object
  • Object
show all
Defined in:
lib/active_record/connection_adapters/sqlserver/core_ext/explain_subscriber.rb

Constant Summary collapse

IGNORED_PAYLOADS = 
%w(SCHEMA EXPLAIN CACHE)
SQLSERVER_EXPLAINED_SQLS = 
/(select|update|delete|insert)/i

Instance Method Summary collapse

Instance Method Details

#call(*args) ⇒ Object 



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# File 'lib/active_record/connection_adapters/sqlserver/core_ext/explain_subscriber.rb', line 6

def call(*args)
  if queries = Thread.current[:available_queries_for_explain]
    payload = args.last
    queries << payload.values_at(:sql, :binds) unless ignore_sqlserver_payload?(payload)
  end
end

#ignore_sqlserver_payload?(payload) ⇒ Boolean

Need to modify the regex for the TSQL generated by this adapter so we can explain the proper sql statements

Returns:

  • (Boolean) 


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# File 'lib/active_record/connection_adapters/sqlserver/core_ext/explain_subscriber.rb', line 17

def ignore_sqlserver_payload?(payload)
  payload[:exception] || IGNORED_PAYLOADS.include?(payload[:name]) || payload[:sql] !~ SQLSERVER_EXPLAINED_SQLS
end