this.dataset=dataset;
}
public QueryResult process(QueryResult bindings, final int operandID) {
for(URILiteral uri: cu){
Indices indices = dataset.getNamedGraphIndices(uri);
if (indices == null){
indices = dataset.getDefaultGraphIndices(uri);
if (indices == null){
if(isSilent) return null;
else throw new Error("Graph "+uri+" does not exist");