private List<VariableCorrespondence> getOriginalCorrespondences(Coverage coverage) {
List<VariableCorrespondence> originalCorrespondences = new ArrayList<VariableCorrespondence>();
for (CoverageAtom atomCoverage : coverage.getCoveringAtoms()) {
originalCorrespondences.addAll(atomCoverage.getOriginalCorrespondences());
}
return originalCorrespondences;
}
public List<VariableCorrespondence> getTargetCorrespondences(CoverageAtom atomCoverage) {
List<VariableCorrespondence> targetCorrespondences = new ArrayList<VariableCorrespondence>();
for (FormulaAtom coveringAtom : atomCoverage.getCoveringAtoms()) {
for (FormulaPosition position : coveringAtom.getPositions()) {
if (position.isUniversal()) {
targetCorrespondences.add(position.getCorrespondence());
}
}
}
return targetCorrespondences;
}
private NegatedComplexQuery generateNegatedQueryForCoverage(Coverage coverage) {
if (logger.isDebugEnabled())
logger.debug("************ Generating query for coverage:\n" + coverage);
ComplexConjunctiveQuery complexQuery = new ComplexConjunctiveQuery();
List<VariableCorrespondence> matchingCorrespondences = new ArrayList<VariableCorrespondence>();
for (CoverageAtom coverageAtom : coverage.getCoveringAtoms()) {
SimpleConjunctiveQuery simpleQuery =
coverageAtom.getFirstCoveringAtom().getTgd().getSimpleSourceView();
List<VariableCorrespondence> matchingCorrespondencesForConjunction =
coverageAtom.getMatchingCorrespondences();
List<VariableCorrespondence> targetCorrespondencesForConjunction =
getTargetCorrespondences(coverageAtom);
if (containsSameAliases(complexQuery, simpleQuery)) {
QueryRenaming queryRenaming =
aliasRenamer.renameAliasesInSimpleConjunctiveQuery(simpleQuery);
simpleQuery = (SimpleConjunctiveQuery) queryRenaming.getRenamedView();
targetCorrespondencesForConjunction =
renamerUtility.renameSourceSetAliasesInCorrespondences(
targetCorrespondencesForConjunction, queryRenaming.getRenamings());
matchingCorrespondencesForConjunction =
renamerUtility.renameSourceSetAliasesInCorrespondences(
matchingCorrespondencesForConjunction, queryRenaming.getRenamings());
}
complexQuery.addConjunction(simpleQuery);
complexQuery.addCorrespondencesForConjuntion(targetCorrespondencesForConjunction);
matchingCorrespondences.addAll(matchingCorrespondencesForConjunction);
}
complexQuery.setJoinConditions(coverage.getTargetJoinConditions());
complexQuery.setCyclicJoinConditions(coverage.getTargetCyclicJoinConditions());
ComplexQueryWithNegations coverageView = new ComplexQueryWithNegations(complexQuery);
coverageView.setProvenance(coverage.toShortString());
TargetEqualities equalities =
new TargetEqualities(getOriginalCorrespondences(coverage), matchingCorrespondences);
NegatedComplexQuery negatedQuery = new NegatedComplexQuery(coverageView, equalities);
if (logger.isDebugEnabled()) logger.debug("************ Final result:\n" + negatedQuery);
return negatedQuery;
}
