Ejemplo n.º 1
0
 public static List<AttributeRef> findTargetQueriedAttributesForExtTGD(Dependency dependency) {
   List<AttributeRef> queriedAttributes = new ArrayList<AttributeRef>();
   LunaticUtility.addAllIfNotContained(
       queriedAttributes, findTargetQueriedAttributesInPremise(dependency));
   for (FormulaVariable formulaVariable : dependency.getPremise().getLocalVariables()) {
     if (formulaVariable.getConclusionRelationalOccurrences().isEmpty()) {
       continue;
     }
     AttributeRef firstPremiseOccurrenceInTarget =
         getFirstPremiseOccurrenceInTarget(formulaVariable.getPremiseRelationalOccurrences());
     if (firstPremiseOccurrenceInTarget != null) {
       AttributeRef unaliasedPremiseAttribute =
           ChaseUtility.unAlias(firstPremiseOccurrenceInTarget);
       LunaticUtility.addIfNotContained(queriedAttributes, unaliasedPremiseAttribute);
     }
     for (FormulaVariableOccurrence conclusionOccurrence :
         formulaVariable.getConclusionRelationalOccurrences()) {
       AttributeRef attribute = conclusionOccurrence.getAttributeRef();
       if (attribute.getTableAlias().isSource()) {
         continue;
       }
       AttributeRef unaliasedConclusionAttribute =
           ChaseUtility.unAlias(conclusionOccurrence.getAttributeRef());
       LunaticUtility.addIfNotContained(queriedAttributes, unaliasedConclusionAttribute);
     }
   }
   return queriedAttributes;
 }
 private void addAdditionalAttributes(
     CellGroup cellGroup, TupleOID originalOIDForConclusionValue, Tuple tuple, Dependency egd) {
   for (AttributeRef additionalAttribute : egd.getAdditionalAttributes()) {
     for (Cell additionalCell : tuple.getCells()) {
       AttributeRef unaliasedAttribute = ChaseUtility.unAlias(additionalCell.getAttributeRef());
       if (!unaliasedAttribute.equals(additionalAttribute)) {
         continue;
       }
       TupleOID originalOIDForCell =
           new TupleOID(ChaseUtility.getOriginalOid(tuple, additionalCell.getAttributeRef()));
       if (!originalOIDForCell.equals(originalOIDForConclusionValue)) {
         continue;
       }
       CellGroupCell additionalCellGroupCell =
           new CellGroupCell(
               originalOIDForCell,
               unaliasedAttribute,
               additionalCell.getValue(),
               null,
               LunaticConstants.TYPE_ADDITIONAL,
               null);
       cellGroup.addAdditionalCell(additionalAttribute, additionalCellGroupCell);
     }
   }
 }
Ejemplo n.º 3
0
 public static AttributeRef findFirstOccurrenceInFormula(
     IFormula formula, List<FormulaVariableOccurrence> occurrences) {
   List<TableAlias> aliasesInFormula =
       AlgebraUtility.findAliasesForFormula(formula.getPositiveFormula());
   for (FormulaVariableOccurrence occurrence : occurrences) {
     AttributeRef attribute = occurrence.getAttributeRef();
     if (aliasesInFormula.contains(attribute.getTableAlias())) {
       return attribute;
     }
   }
   return null;
 }
Ejemplo n.º 4
0
 public static List<AttributeRef> findTargetQueriedAttributesInPremise(Dependency dependency) {
   if (logger.isTraceEnabled())
     logger.trace("Searching query attributes for dependency: \n" + dependency);
   List<AttributeRef> queriedAttributes = new ArrayList<AttributeRef>();
   for (FormulaVariable variable : dependency.getPremise().getLocalVariables()) {
     if (logger.isTraceEnabled()) logger.trace("Inspecting variable: " + variable);
     if (hasSingleOccurrenceInPremise(variable)) {
       continue;
     }
     for (FormulaVariableOccurrence occurrence : variable.getPremiseRelationalOccurrences()) {
       if (logger.isTraceEnabled()) logger.trace("Inspecting occurrence: " + occurrence);
       AttributeRef attribute = occurrence.getAttributeRef();
       if (attribute.getTableAlias().isSource()) {
         continue;
       }
       AttributeRef unaliasedAttribute = ChaseUtility.unAlias(attribute);
       LunaticUtility.addIfNotContained(queriedAttributes, unaliasedAttribute);
     }
   }
   if (logger.isTraceEnabled()) logger.trace("Result: " + queriedAttributes);
   return queriedAttributes;
 }