The CaVa^gen set consist of four processors, namely CaVa^structure, CaVa^queries (CaVa^{queriesTriple} for triples, instead of mappings), and CaVa^run. The first one is responsible for the generation of the static content of the virtual LS. Moreover, CaVa^structure has the task of executing the CaVa^queries or CaVa^{queriesTriple} processor (if at least one query operator is set up in the CaVa^DSL Specification). The second and third one have the duty of assembling the ontology queries based on the query operator(s) specified in the CaVa^DSL description. They shall handle the mapping or other intermediate file that links the ontology to the database (e.g., an OBDA mapping file, a Terse RDF Triple (turtle) file, etc). The last one, CaVa^run, is responsible for executing the queries mounted by CaVa^queries or CaVa^{queriesTriple} Processor and generates the queries results file to be used by the LS Scripts.