@Override
public QueryCriteria visit(NotQueryCriteria criteria, List<AttributeReference.Key> arg) {
QueryCriteria subQuery = criteria.getSubQueryCriteria().accept(this, arg);
if (subQuery.equals(criteria.getSubQueryCriteria())) {
return criteria;
}
return new NotQueryCriteria(subQuery);
}
@Override
public QueryCriteria visit(NotQueryCriteria criteria, Void arg) {
QueryCriteria subQuery = criteria.getSubQueryCriteria().accept(this, null);
if (subQuery.equals(criteria.getSubQueryCriteria())) {
return criteria;
}
return new NotQueryCriteria(subQuery);
}
public static List<ProcessedQueryCriteria> process(
NotQueryCriteria criteria, QueryCriteriaVisitor<List<ProcessedQueryCriteria>, Void> visitor) {
List<ProcessedQueryCriteria> childResults =
criteria.getSubQueryCriteria().accept(visitor, null);
List<ProcessedQueryCriteria> result = Lists.newArrayListWithCapacity(childResults.size() * 2);
for (ProcessedQueryCriteria cr : childResults) {
// if the structure query is not a tautology (=always true)
// then we add the negation of the given expression with no data query
if (cr.getStructureQuery() != null
&& !TrueQueryCriteria.getInstance().equals(cr.getStructureQuery())) {
result.add(new ProcessedQueryCriteria(new NotQueryCriteria(cr.getStructureQuery()), null));
}
if (cr.getDataQuery() != null && !TrueQueryCriteria.getInstance().equals(cr.getDataQuery())) {
result.add(
new ProcessedQueryCriteria(
cr.getStructureQuery(), new NotQueryCriteria(cr.getDataQuery())));
}
}
return result;
}