BatchedCommandRequest* msgToBatchDelete( const Message& deleteMsg ) {
// Parsing DbMessage throws
DbMessage dbMsg( deleteMsg );
NamespaceString nss( dbMsg.getns() );
int flags = dbMsg.pullInt();
const BSONObj query = dbMsg.nextJsObj();
int limit = ( flags & RemoveOption_JustOne ) ? 1 : 0;
// No exceptions from here on
BatchedDeleteDocument* deleteDoc = new BatchedDeleteDocument;
deleteDoc->setLimit( limit );
deleteDoc->setQuery( query );
BatchedCommandRequest* request =
new BatchedCommandRequest( BatchedCommandRequest::BatchType_Delete );
request->setNS( nss.ns() );
request->getDeleteRequest()->addToDeletes( deleteDoc );
return request;
}