}
Integer size = pm.find_ulong_param( CollectionService.EXP_SIZE );
if ( size == null ) {
size = new Integer(10);
}
Operations ops = pm.find_operations_param( CollectionService.OPERATIONS );
if ( ops == null ) {
String ops_class = pm.find_string_param( CollectionService.OPERATIONS_CLASS );
if( ops_class == null ){
throw new ParameterInvalid( pm.find_param_idx(CollectionService.OPERATIONS), "CollectionFactory: OPERATION object not defined" );
}