Module: Sequel::MySQL::PreparedStatements::DatasetMethods

Includes:
Dataset::StoredProcedures
Included in:
Dataset, Sequel::Mysql2::Dataset
Defined in:
lib/sequel/adapters/shared/mysql_prepared_statements.rb

Defined Under Namespace

Modules: CallableStatementMethods, PreparedStatementMethods, StoredProcedureMethods

Instance Method Summary collapse

Methods included from Dataset::StoredProcedures

#call_sproc, #prepare_sproc

Instance Method Details

#call(type, bind_arguments = {}, *values, &block) ⇒ Object

MySQL is different in that it supports prepared statements but not bound variables outside of prepared statements. The default implementation breaks the use of subselects in prepared statements, so extend the temporary prepared statement that this creates with a module that fixes it.



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# File 'lib/sequel/adapters/shared/mysql_prepared_statements.rb', line 138

def call(type, bind_arguments={}, *values, &block)
  ps = to_prepared_statement(type, values)
  ps.extend(CallableStatementMethods)
  ps.call(bind_arguments, &block)
end

#prepare(type, name = nil, *values) ⇒ Object

Store the given type of prepared statement in the associated database with the given name.



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# File 'lib/sequel/adapters/shared/mysql_prepared_statements.rb', line 146

def prepare(type, name=nil, *values)
  ps = to_prepared_statement(type, values)
  ps.extend(PreparedStatementMethods)
  if name
    ps.prepared_statement_name = name
    db.set_prepared_statement(name, ps)
  end
  ps
end