Incremental validation of NCL hypermedia documents

Abstract

This paper proposes an incremental, structural and contextual validation method for Nested Context Language (NCL) documents. As part of the proposed method, we define a declarative metalanguage to ensure low coupling between NCL structure and the validator code, which simplifies the validation of new language profiles. Requirements such as incremental processing and multilingual messages are also covered by this work. We present an implementation of this method using component architecture as a proof of concept and also conduct a performance evaluation to compare the traditional and incremental validation approaches. Keywords NCL • Incremental validation • Code validation • Ginga • ISDB-Tb • iDTV This is an extended version of the paper "Método de Validação Estrutural e Contextual de Documentos NCL", presented as one of the Best Papers of Webmedia 2011 (Brazilian Symposium on Web and Hypermedia Systems).