Examples with StructType org.apache.geode.cache.query.types.StructType used on opensource projects

Example 11 with StructType

use of org.apache.geode.cache.query.types.StructType in project geode by apache.

the class IndexUseMultFrmSnglCondJUnitTest method testIndexUsageComaprison.

@Test
public void testIndexUsageComaprison() throws Exception {
    Region region = CacheUtils.createRegion("portfolios", Portfolio.class);
    StructType resArType1 = null;
    StructType resArType2 = null;
    String[] strAr1 = null;
    String[] strAr2 = null;
    int resArSize1 = 0;
    int resArSize2 = 0;
    Object valPf1 = null;
    Object valPos1 = null;
    Object valPf2 = null;
    Object valPos2 = null;
    String SECID1 = null;
    String SECID2 = null;
    Iterator iter1 = null;
    Iterator iter2 = null;
    Set set1 = null;
    Set set2 = null;
    for (int i = 0; i < 4; i++) {
        region.put("" + i, new Portfolio(i));
    }
    QueryService qs = CacheUtils.getQueryService();
    String[] queries = { "SELECT DISTINCT * from /portfolios pf, pf.positions.values pos where pos.secId = 'IBM'" };
    SelectResults[][] r = new SelectResults[queries.length][2];
    for (int i = 0; i < queries.length; i++) {
        Query q = null;
        try {
            q = CacheUtils.getQueryService().newQuery(queries[i]);
            QueryObserverImpl observer = new QueryObserverImpl();
            QueryObserverHolder.setInstance(observer);
            r[i][0] = (SelectResults) q.execute();
            if (observer.isIndexesUsed) {
                fail("If index were not there how did they get used ???? ");
            }
            resArType1 = (StructType) (r[i][0]).getCollectionType().getElementType();
            resArSize1 = ((r[i][0]).size());
            CacheUtils.log(resArType1);
            strAr1 = resArType1.getFieldNames();
            set1 = ((r[i][0]).asSet());
            Iterator iter = set1.iterator();
            while (iter.hasNext()) {
                Struct stc1 = (Struct) iter.next();
                valPf1 = stc1.get(strAr1[0]);
                valPos1 = stc1.get(strAr1[1]);
                SECID1 = (((Position) valPos1).getSecId());
            }
        } catch (Exception e) {
            e.printStackTrace();
            fail(q.getQueryString());
        }
    }
    // Create an Index and Run the Same Query as above.
    qs.createIndex("secIdIndex", IndexType.FUNCTIONAL, "b.secId", "/portfolios pf, pf.positions.values b");
    for (int j = 0; j < queries.length; j++) {
        Query q2 = null;
        try {
            q2 = CacheUtils.getQueryService().newQuery(queries[j]);
            QueryObserverImpl observer2 = new QueryObserverImpl();
            QueryObserverHolder.setInstance(observer2);
            r[j][1] = (SelectResults) q2.execute();
            if (observer2.isIndexesUsed != true) {
                fail("FAILED: Index NOT Used");
            }
            resArType2 = (StructType) (r[j][1]).getCollectionType().getElementType();
            CacheUtils.log(resArType2);
            resArSize2 = (r[j][1]).size();
            strAr2 = resArType2.getFieldNames();
            set2 = ((r[j][1]).asSet());
            Iterator iter = set2.iterator();
            while (iter.hasNext()) {
                Struct stc2 = (Struct) iter.next();
                valPf2 = stc2.get(strAr2[0]);
                valPos2 = stc2.get(strAr2[1]);
                SECID2 = (((Position) valPos2).getSecId());
            }
        } catch (Exception e) {
            e.printStackTrace();
            fail(q2.getQueryString());
        }
    }
    if ((resArType1).equals(resArType2)) {
        CacheUtils.log("Both Search Results are of the same Type i.e.--> " + resArType2);
    } else {
        fail("FAILED:Search result Type is different in both the cases");
    }
    if ((resArSize1 == resArSize2) || resArSize1 != 0) {
        CacheUtils.log("Search Results Size is Non Zero and is of Same Size i.e.  Size= " + resArSize1);
    } else {
        fail("FAILED:Search result size is different in both the cases");
    }
    iter2 = set2.iterator();
    iter1 = set1.iterator();
    while (iter1.hasNext()) {
        Struct stc2 = (Struct) iter2.next();
        Struct stc1 = (Struct) iter1.next();
        if (stc2.get(strAr2[0]) != stc1.get(strAr1[0]))
            fail("FAILED: In both the Cases the first member of StructSet i.e. Portfolio are different. ");
        if (stc2.get(strAr2[1]) != stc1.get(strAr1[1]) || !((Position) stc1.get(strAr1[1])).secId.equals("IBM"))
            fail("FAILED: In both the cases either Positions Or secIds obtained are different");
    }
    CacheUtils.compareResultsOfWithAndWithoutIndex(r, this);
}

Example 12 with StructType

use of org.apache.geode.cache.query.types.StructType in project geode by apache.

the class ResultsBagLimitBehaviourJUnitTest method testAddAndGetOccurence.

// Internal method AddAndGetOccurence used for iter evaluating
// only up till the limit
@Test
public void testAddAndGetOccurence() {
    ResultsBag bag = getBagObject(String.class);
    bag = getBagObject(String.class);
    ObjectType elementType = bag.getCollectionType().getElementType();
    assertEquals(1, bag.addAndGetOccurence(elementType instanceof StructType ? ((Struct) wrap("one", elementType)).getFieldValues() : wrap("one", elementType)));
    bag.add(wrap("two", elementType));
    assertEquals(2, bag.addAndGetOccurence(elementType instanceof StructType ? ((Struct) wrap("two", elementType)).getFieldValues() : wrap("two", bag.getCollectionType().getElementType())));
    bag.add(wrap("three", bag.getCollectionType().getElementType()));
    bag.add(wrap("three", bag.getCollectionType().getElementType()));
    assertEquals(3, bag.addAndGetOccurence(elementType instanceof StructType ? ((Struct) wrap("three", elementType)).getFieldValues() : wrap("three", elementType)));
    bag.add(wrap(null, bag.getCollectionType().getElementType()));
    bag.add(wrap(null, bag.getCollectionType().getElementType()));
    assertEquals(3, bag.addAndGetOccurence(elementType instanceof StructType ? ((Struct) wrap(null, elementType)).getFieldValues() : wrap(null, elementType)));
}

Example 13 with StructType

use of org.apache.geode.cache.query.types.StructType in project geode by apache.

the class QueryUtils method cartesian.

/**
   * This util function does a cartesian of the array of SelectResults object , expanding the
   * resultant set to the number of iterators passed in expansionList. The position of the iterator
   * fields in the final result is governed by the order of RuntimeIterators present in the
   * finalList. If any condition needs to be evaluated during cartesian , it can be passed as
   * operand
   * 
   * @param results Array of SelectResults object which are to be cartesianed
   * @param itrsForResultFields A two dimensional array of RuntimeIterator. Each row of this two
   *        dimensional RuntimeIterator array , maps to a SelectResults object in the results array.
   *        Thus the 0th row of two dimensional RuntimeIterator array will map to the 0th element of
   *        the SelectResults array. The order of RuntimeIterator in a row will map to the fields in
   *        the SelectResults object. The 0th RuntimeIterator will map to the 0th field of the
   *        corresponding SelectResults object. The number of rows in the two dimensional array of
   *        RuntimeIterator should be equal to the size of array of SelectResults object passed and
   *        the number of RuntimeIterators in each row should be equal to the number of fields in
   *        the SelectResults object . The SelectResults object itself may be a ResultBag object or
   *        a StructBag object.
   * 
   * @param expansionList List containing RunimeIterators to which the final Results should be
   *        expanded to.
   * @param finalList List containing RuntimeIterators which define the number of fields to be
   *        present in the resultant SelectResults and their relative positions. The Runtime
   *        Iterators present in the List should be either available in the expansion List or should
   *        be present in each row of the two dimensional RuntimeIterator array.
   * 
   * @param context ExecutionContext object
   * @param operand The CompiledValue which needs to be iter evaluated during cartesian. Only those
   *        tuples will be selected in the final Result for which oerand evaluates to true.
   * @return SelectResults object representing the final result of the cartesian
   */
public static SelectResults cartesian(SelectResults[] results, RuntimeIterator[][] itrsForResultFields, List expansionList, List finalList, ExecutionContext context, CompiledValue operand) throws FunctionDomainException, TypeMismatchException, NameResolutionException, QueryInvocationTargetException {
    SelectResults returnSet = null;
    if (finalList.size() == 1) {
        ObjectType type = ((RuntimeIterator) finalList.iterator().next()).getElementType();
        if (type instanceof StructType) {
            returnSet = QueryUtils.createStructCollection(context, (StructTypeImpl) type);
        } else {
            return QueryUtils.createResultCollection(context, type);
        }
    } else {
        StructType structType = createStructTypeForRuntimeIterators(finalList);
        returnSet = QueryUtils.createStructCollection(context, structType);
    }
    ListIterator expnItr = expansionList.listIterator();
    doNestedIterations(0, returnSet, results, itrsForResultFields, finalList, expnItr, results.length + expansionList.size(), context, operand);
    return returnSet;
}

Example 14 with StructType

use of org.apache.geode.cache.query.types.StructType in project geode by apache.

the class QueryUtils method getConditionedRelationshipIndexResultsExpandedToTopOrCGJLevel.

/**
   * This function is used to evaluate a filter evaluatable composite condition. It gets invoked
   * either from a CompositeGroupJunction of "OR" type or a where clause containing single composite
   * condition. In the later case the boolean completeExpansion flag is always true. While in the
   * former case it may be true or false. If it is false, the array of independent iterators passed
   * is not null.
   * 
   * @param data A List object whose elements are two dimensional object array. Each element of the
   *        List represent a value which satisfies the equi-join condition. Since there may be more
   *        than one tuples on either side of the equality condition which meet the criteria for a
   *        given value, we require a 2 dimensional Object array. The cartesian of the two rows will
   *        give us the set of tuples satisfying the join criteria. Each element of the row of
   *        Object Array may be either an Object or a Struct object.
   * @param indxInfo An array of IndexInfo objects of size 2 , representing the range indexes of the
   *        two operands. The other Index maps to the 0th Object array row of the List object ( data
   *        ) & so on.
   * @param context ExecutionContext object
   * @param completeExpansionNeeded boolean if true indicates that the CGJ needs to be expanded to
   *        the query from clause ( top level )
   * @param iterOperands This will be null as for OR junction we cannot have iter operand
   * @param indpdntItrs Array of independent iterators representing the various Groups forming the
   *        composite group junction. It will be null, if complete expansion flag is true
   * @return SelectResults objet representing the result obtained by evaluating a filter evaluatable
   *         composite condition in an OR junction. The returned Result is expanded either to the
   *         CompositeGroupJunction level or to the top level as the case may be
   */
static SelectResults getConditionedRelationshipIndexResultsExpandedToTopOrCGJLevel(List data, IndexInfo[] indxInfo, ExecutionContext context, boolean completeExpansionNeeded, CompiledValue iterOperands, RuntimeIterator[] indpdntItrs) throws FunctionDomainException, TypeMismatchException, NameResolutionException, QueryInvocationTargetException {
    ObjectType resultType1 = indxInfo[0]._index.getResultSetType();
    int indexFieldsSize1 = resultType1 instanceof StructType ? ((StructTypeImpl) resultType1).getFieldNames().length : 1;
    ObjectType resultType2 = indxInfo[1]._index.getResultSetType();
    int indexFieldsSize2 = resultType2 instanceof StructType ? ((StructTypeImpl) resultType2).getFieldNames().length : 1;
    /*
     * even if th complete expansion is needed pass the flag of complete expansion as false. Thus
     * for LHS & RHS we will get the expansionList for that individual group. Thus the total
     * expansion List wil contain sum of the individual expansion lists plus all the iterators of
     * the current scope which are dependent on any other groups or are composite iterators ( i.e
     * dependent on both the independent groups currently under consideration
     */
    // pass completeExpansion as false, irrespective of actual value
    IndexConditioningHelper ich1 = new IndexConditioningHelper(indxInfo[0], context, indexFieldsSize1, false, iterOperands, null);
    // pass completeExpansion as false, irrespective of actual value
    IndexConditioningHelper ich2 = new IndexConditioningHelper(indxInfo[1], context, indexFieldsSize2, false, iterOperands, null);
    List totalExpList = new ArrayList();
    totalExpList.addAll(ich1.expansionList);
    totalExpList.addAll(ich2.expansionList);
    List totalFinalList = null;
    if (completeExpansionNeeded) {
        totalFinalList = context.getCurrentIterators();
        Set expnItrsAlreadyAccounted = new HashSet();
        expnItrsAlreadyAccounted.addAll(ich1.finalList);
        expnItrsAlreadyAccounted.addAll(ich2.finalList);
        int size = totalFinalList.size();
        for (int i = 0; i < size; ++i) {
            RuntimeIterator currItr = (RuntimeIterator) totalFinalList.get(i);
            // If the runtimeIterators of scope not present in CheckSet add it to the expansion list
            if (!expnItrsAlreadyAccounted.contains(currItr)) {
                totalExpList.add(currItr);
            }
        }
    } else {
        totalFinalList = new ArrayList();
        for (int i = 0; i < indpdntItrs.length; ++i) {
            RuntimeIterator indpndntItr = indpdntItrs[i];
            if (indpndntItr == ich1.finalList.get(0)) {
                totalFinalList.addAll(ich1.finalList);
            } else if (indpndntItr == ich2.finalList.get(0)) {
                totalFinalList.addAll(ich2.finalList);
            } else {
                List temp = context.getCurrScopeDpndntItrsBasedOnSingleIndpndntItr(indpndntItr);
                totalFinalList.addAll(temp);
                totalExpList.addAll(temp);
            }
        }
    }
    SelectResults returnSet;
    StructType stype = createStructTypeForRuntimeIterators(totalFinalList);
    if (totalFinalList.size() == 1) {
        returnSet = QueryUtils.createResultCollection(context, new ObjectTypeImpl(stype.getClass()));
    } else {
        returnSet = QueryUtils.createStructCollection(context, stype);
    }
    RuntimeIterator[][] mappings = new RuntimeIterator[2][];
    mappings[0] = ich1.indexFieldToItrsMapping;
    mappings[1] = ich2.indexFieldToItrsMapping;
    List[] totalCheckList = new List[] { ich1.checkList, ich2.checkList };
    Iterator dataItr = data.iterator();
    IndexCutDownExpansionHelper[] icdeh = new IndexCutDownExpansionHelper[] { new IndexCutDownExpansionHelper(ich1.checkList, context), new IndexCutDownExpansionHelper(ich2.checkList, context) };
    ListIterator expansionListIterator = totalExpList.listIterator();
    if (dataItr.hasNext()) {
        QueryObserver observer = QueryObserverHolder.getInstance();
        try {
            observer.beforeMergeJoinOfDoubleIndexResults(ich1.indxInfo._index, ich2.indxInfo._index, data);
            while (dataItr.hasNext()) {
                // TODO: Change the code in range Index so that while collecting data instead of creating
                // two dimensional object array , we create one dimensional Object array of size 2, & each
                // elemnt stores an Object array
                Object[][] values = (Object[][]) dataItr.next();
                // Before doing the cartesian of the Results , we need to clear the CheckSet of
                // IndexCutDownExpansionHelper. This is needed because for a new key , the row of sets
                // needs to be considered fresh as presence of old row in checkset may cause us to wrongly
                // skip the similar row of a set , even when the row in its entirety is unique ( made by
                // different data in the other set)
                mergeAndExpandCutDownRelationshipIndexResults(values, returnSet, mappings, expansionListIterator, totalFinalList, context, totalCheckList, iterOperands, icdeh, 0);
                if (icdeh[0].cutDownNeeded)
                    icdeh[0].checkSet.clear();
            }
        } finally {
            observer.afterMergeJoinOfDoubleIndexResults(returnSet);
        }
    }
    return returnSet;
}

Example 15 with StructType

use of org.apache.geode.cache.query.types.StructType in project geode by apache.

the class QueryUtils method getRelationshipIndexResultsMergedWithIntermediateResults.

/**
   * This function is used to evaluate a filter evaluatable CompositeCondition(ie Range Indexes
   * available on both LHS & RHS operands).This function is invoked from AND junction evaluation of
   * CompositeGroupJunction. It expands the intermediate resultset passed , to the level of groups
   * determined by the LHS & RHS operand, using the range indexes. It is possible that the group of
   * iterators for an operand of condition already exists in the intermediate resultset passed. In
   * such situation, the intermediate resultset is iterated & the operand ( whose group of iterators
   * are available in the intermediate resultset ) is evaluated. For each such evaluated value , the
   * other operand's Range Index is queried & the Range Index's results are appropriately expanded &
   * cut down & a final tuple obtained( which includes the previously existing fields of
   * intermediate resultset). The array of independent iterators passed from the Composite Group
   * junction will be null, except for the final condition ( subject to the fact that complete
   * expansion flag is false. Otherwise even for final condition , the array will be null) as that
   * array will be used to get the final position of iterators in the resultant StructBag
   *
   * TODO: break this method up
   * 
   * @param intermediateResults SelectResults object containing the intermediate resultset obtained
   *        by evaluation of previous filter evaluatable composite conditions of the
   *        CompositeGroupJunction
   * @param indxInfo Array of IndexInfo objects ( size 2), representing the range index for the two
   *        operands of the condition
   * @param context ExecutionContext object
   * @param completeExpansionNeeded A boolean when true indicates that the final result from
   *        Composite GroupJunction needs to be evaluated to the query from clause ( top ) level.
   * @param iterOperands CompiledValue representing the conditions which are to be iter evaluated.
   *        This can exist only if instead of AllGroupJunction we have a single
   *        CompositeGroupJunction
   * @param indpdntItrs Array of RuntimeIterators representing the independent iterators of their
   *        representative groups forming the CompositeGroupJunction *
   * @return SelectResults The Result object created by evaluating the filter evaluatable condition
   *         merged with the intermediate results
   */
static SelectResults getRelationshipIndexResultsMergedWithIntermediateResults(SelectResults intermediateResults, IndexInfo[] indxInfo, ExecutionContext context, boolean completeExpansionNeeded, CompiledValue iterOperands, RuntimeIterator[] indpdntItrs) throws FunctionDomainException, TypeMismatchException, NameResolutionException, QueryInvocationTargetException {
    ObjectType resultType1 = indxInfo[0]._index.getResultSetType();
    int indexFieldsSize1 = resultType1 instanceof StructType ? ((StructTypeImpl) resultType1).getFieldNames().length : 1;
    ObjectType resultType2 = indxInfo[1]._index.getResultSetType();
    int indexFieldsSize2 = resultType2 instanceof StructType ? ((StructTypeImpl) resultType2).getFieldNames().length : 1;
    /*
     * even if the complete expansion is needed pass the flag of complete expansion as false. Thus
     * for LHS & RHS we will get the expansionList for that individual group.
     */
    // NOTE: use false for completeExpansion irrespective of actual value
    IndexConditioningHelper ich1 = new IndexConditioningHelper(indxInfo[0], context, indexFieldsSize1, false, iterOperands, null);
    // NOTE: use false for completeExpansion irrespective of actual value
    IndexConditioningHelper ich2 = new IndexConditioningHelper(indxInfo[1], context, indexFieldsSize2, false, iterOperands, null);
    // We cannot have a condition where in intermediateResultset is empty
    // or null & complete
    // expansion flag true because in that case instead of this function we should
    // have called
    int noOfIndexesToUse = intermediateResults == null || intermediateResults.isEmpty() ? 2 : 0;
    RuntimeIterator[] resultFieldsItrMapping = null;
    List allItrs = context.getCurrentIterators();
    IndexConditioningHelper singleUsableICH = null;
    IndexConditioningHelper nonUsableICH = null;
    List finalList = completeExpansionNeeded ? allItrs : indpdntItrs == null ? new ArrayList() : null;
    // the set will contain those iterators which we don't have to expand to either because they are
    // already present ( because of intermediate results or because index result already contains
    // them
    Set expnItrsToIgnore = null;
    if (noOfIndexesToUse == 0) {
        // If the intermediate Resultset is not empty then check if the resultset
        // fields of intermediate
        // resultset contains any independent iterator of the current condition
        noOfIndexesToUse = 2;
        StructType stype = (StructType) intermediateResults.getCollectionType().getElementType();
        String[] fieldNames = stype.getFieldNames();
        int len = fieldNames.length;
        resultFieldsItrMapping = new RuntimeIterator[len];
        String fieldName = null;
        String lhsID = ich1.indpndntItr.getInternalId();
        String rhsID = ich2.indpndntItr.getInternalId();
        for (int i = 0; i < len; ++i) {
            fieldName = fieldNames[i];
            if (noOfIndexesToUse != 0) {
                if (fieldName.equals(lhsID)) {
                    --noOfIndexesToUse;
                    singleUsableICH = ich2;
                    nonUsableICH = ich1;
                } else if (fieldName.equals(rhsID)) {
                    --noOfIndexesToUse;
                    singleUsableICH = ich1;
                    nonUsableICH = ich2;
                }
            }
            int pos = Integer.parseInt(fieldName.substring(4));
            RuntimeIterator itrPrsntInIntermdtRes = (RuntimeIterator) allItrs.get(pos - 1);
            resultFieldsItrMapping[i] = itrPrsntInIntermdtRes;
            // the iterator below is already present in resultset so needs to be ignored for expansion
            if (completeExpansionNeeded) {
                if (expnItrsToIgnore == null) {
                    expnItrsToIgnore = new HashSet();
                }
                expnItrsToIgnore.add(itrPrsntInIntermdtRes);
            } else if (indpdntItrs == null) {
                // We will need to know the intermediate iterators so as to know
                // the final list which will be used to obtain the correct structset.
                // But if the independent group of iterators is passed, the final list needs
                // to be calculated
                // on its basis
                finalList.add(itrPrsntInIntermdtRes);
            }
        }
        if (noOfIndexesToUse == 0) {
            singleUsableICH = null;
        }
    }
    QueryObserver observer = QueryObserverHolder.getInstance();
    if (noOfIndexesToUse == 2) {
        List data = null;
        try {
            ArrayList resultData = new ArrayList();
            observer.beforeIndexLookup(indxInfo[0]._index, OQLLexerTokenTypes.TOK_EQ, null);
            observer.beforeIndexLookup(indxInfo[1]._index, OQLLexerTokenTypes.TOK_EQ, null);
            if (context.getBucketList() != null) {
                data = queryEquijoinConditionBucketIndexes(indxInfo, context);
            } else {
                data = indxInfo[0]._index.queryEquijoinCondition(indxInfo[1]._index, context);
            }
        } finally {
            observer.afterIndexLookup(data);
        }
        // For sure we need to evaluate both the conditions & expand it only to
        // its own respective
        // Ignore the boolean of reshuffling needed etc for this case
        List totalExpList = new ArrayList();
        totalExpList.addAll(ich1.expansionList);
        totalExpList.addAll(ich2.expansionList);
        if (completeExpansionNeeded) {
            if (expnItrsToIgnore == null) {
                // The expnItrsToIgnore set being null at this point implies that though complete
                // expansion flag is true but intermediate result set is empty
                Support.Assert(intermediateResults == null || intermediateResults.isEmpty(), "expnItrsToIgnore should not have been null if the intermediate result set is not empty");
                expnItrsToIgnore = new HashSet();
            }
            expnItrsToIgnore.addAll(ich1.finalList);
            expnItrsToIgnore.addAll(ich2.finalList);
            // identify the iterators which we need to expand to
            // TODO: Make the code compact by using a common function to take care of this
            int size = finalList.size();
            for (int i = 0; i < size; ++i) {
                RuntimeIterator currItr = (RuntimeIterator) finalList.get(i);
                // If the runtimeIterators of scope not present in CheckSet add it to the expansion list
                if (!expnItrsToIgnore.contains(currItr)) {
                    totalExpList.add(currItr);
                }
            }
        } else {
            // struct set mismatch while doing intersection with GroupJunction results
            if (indpdntItrs != null) {
                finalList = getDependentItrChainForIndpndntItrs(indpdntItrs, context);
            } else {
                finalList.addAll(ich1.finalList);
                finalList.addAll(ich2.finalList);
            }
        }
        List[] checkList = new List[] { ich1.checkList, ich2.checkList };
        StructType stype = createStructTypeForRuntimeIterators(finalList);
        SelectResults returnSet = QueryUtils.createStructCollection(context, stype);
        RuntimeIterator[][] mappings = new RuntimeIterator[2][];
        mappings[0] = ich1.indexFieldToItrsMapping;
        mappings[1] = ich2.indexFieldToItrsMapping;
        List[] totalCheckList = new List[] { ich1.checkList, ich2.checkList };
        RuntimeIterator[][] resultMappings = new RuntimeIterator[1][];
        resultMappings[0] = resultFieldsItrMapping;
        Iterator dataItr = data.iterator();
        IndexCutDownExpansionHelper[] icdeh = new IndexCutDownExpansionHelper[] { new IndexCutDownExpansionHelper(ich1.checkList, context), new IndexCutDownExpansionHelper(ich2.checkList, context) };
        ListIterator expansionListIterator = totalExpList.listIterator();
        if (dataItr.hasNext()) {
            observer = QueryObserverHolder.getInstance();
            try {
                observer.beforeMergeJoinOfDoubleIndexResults(indxInfo[0]._index, indxInfo[1]._index, data);
                boolean doMergeWithIntermediateResults = intermediateResults != null && !intermediateResults.isEmpty();
                int maxCartesianDepth = totalExpList.size() + (doMergeWithIntermediateResults ? 1 : 0);
                while (dataItr.hasNext()) {
                    // TODO: Change the code in range Index so that while collecting data instead of
                    // creating two dimensional object array , we create one dimensional Object array of
                    // size 2, & each elemnt stores an Object array
                    Object[][] values = (Object[][]) dataItr.next();
                    // made by different data in the other set)
                    if (doMergeWithIntermediateResults) {
                        mergeRelationshipIndexResultsWithIntermediateResults(returnSet, new SelectResults[] { intermediateResults }, resultMappings, values, mappings, expansionListIterator, finalList, context, checkList, iterOperands, icdeh, 0, maxCartesianDepth);
                    } else {
                        mergeAndExpandCutDownRelationshipIndexResults(values, returnSet, mappings, expansionListIterator, finalList, context, totalCheckList, iterOperands, icdeh, 0);
                    }
                    if (icdeh[0].cutDownNeeded)
                        icdeh[0].checkSet.clear();
                }
            } finally {
                observer.afterMergeJoinOfDoubleIndexResults(returnSet);
            }
        }
        return returnSet;
    } else if (noOfIndexesToUse == 1) {
        // There exists one independent iterator in the current condition which is also a part of the
        // intermediate resultset Identify the final List which will depend upon the complete
        // expansion flag Identify the iterators to be expanded to, which will also depend upon
        // complete expansion flag..
        List totalExpList = new ArrayList();
        totalExpList.addAll(singleUsableICH.expansionList);
        if (completeExpansionNeeded) {
            Support.Assert(expnItrsToIgnore != null, "expnItrsToIgnore should not have been null as we are in this block itself indicates that intermediate results was not null");
            expnItrsToIgnore.addAll(singleUsableICH.finalList);
            // identify the iterators which we need to expand to
            // TODO: Make the code compact by using a common function to take care of this
            int size = finalList.size();
            for (int i = 0; i < size; ++i) {
                RuntimeIterator currItr = (RuntimeIterator) finalList.get(i);
                // If the runtimeIterators of scope not present in CheckSet add it to the expansion list
                if (!expnItrsToIgnore.contains(currItr)) {
                    totalExpList.add(currItr);
                }
            }
        } else {
            // struct set mismatch while doing intersection with GroupJunction results
            if (indpdntItrs != null) {
                finalList = getDependentItrChainForIndpndntItrs(indpdntItrs, context);
            } else {
                finalList.addAll(singleUsableICH.finalList);
            }
        }
        StructType stype = createStructTypeForRuntimeIterators(finalList);
        SelectResults returnSet = QueryUtils.createStructCollection(context, stype);
        // Obtain the empty resultset for the single usable index
        IndexProtocol singleUsblIndex = singleUsableICH.indxInfo._index;
        CompiledValue nonUsblIndxPath = nonUsableICH.indxInfo._path;
        ObjectType singlUsblIndxResType = singleUsblIndex.getResultSetType();
        SelectResults singlUsblIndxRes = null;
        if (singlUsblIndxResType instanceof StructType) {
            singlUsblIndxRes = QueryUtils.createStructCollection(context, (StructTypeImpl) singlUsblIndxResType);
        } else {
            singlUsblIndxRes = QueryUtils.createResultCollection(context, singlUsblIndxResType);
        }
        // iterate over the intermediate structset
        Iterator intrmdtRsItr = intermediateResults.iterator();
        observer = QueryObserverHolder.getInstance();
        try {
            observer.beforeIndexLookup(singleUsblIndex, OQLLexerTokenTypes.TOK_EQ, null);
            observer.beforeIterJoinOfSingleIndexResults(singleUsblIndex, nonUsableICH.indxInfo._index);
            while (intrmdtRsItr.hasNext()) {
                Struct strc = (Struct) intrmdtRsItr.next();
                Object[] val = strc.getFieldValues();
                int len = val.length;
                for (int i = 0; i < len; ++i) {
                    resultFieldsItrMapping[i].setCurrent(val[i]);
                }
                // TODO: Issue relevant index use callbacks to QueryObserver
                Object key = nonUsblIndxPath.evaluate(context);
                // TODO: Check this logic out
                if (key != null && key.equals(QueryService.UNDEFINED)) {
                    continue;
                }
                singleUsblIndex.query(key, OQLLexerTokenTypes.TOK_EQ, singlUsblIndxRes, context);
                cutDownAndExpandIndexResults(returnSet, singlUsblIndxRes, singleUsableICH.indexFieldToItrsMapping, totalExpList, finalList, context, singleUsableICH.checkList, iterOperands, singleUsableICH.indxInfo);
                singlUsblIndxRes.clear();
            }
        } finally {
            observer.afterIterJoinOfSingleIndexResults(returnSet);
            observer.afterIndexLookup(returnSet);
        }
        return returnSet;
    } else {
        // PART OF ITER OPERANDS
        if (logger.isDebugEnabled()) {
            StringBuilder tempBuffLhs = new StringBuilder();
            StringBuilder tempBuffRhs = new StringBuilder();
            ich1.indxInfo._path.generateCanonicalizedExpression(tempBuffLhs, context);
            ich2.indxInfo._path.generateCanonicalizedExpression(tempBuffRhs, context);
            logger.debug("For better performance indexes are not used for the condition {} = {}", tempBuffLhs, tempBuffRhs);
        }
        CompiledValue reconstructedVal = new CompiledComparison(ich1.indxInfo._path, ich2.indxInfo._path, OQLLexerTokenTypes.TOK_EQ);
        // Add this reconstructed value to the iter operand if any
        CompiledValue finalVal = reconstructedVal;
        if (iterOperands != null) {
            // The type of CompiledJunction has to be AND junction as this function gets invoked only
            // for AND . Also it is OK if we have iterOperands which itself is a CompiledJunction. We
            // can have a tree of CompiledJunction with its operands being a CompiledComparison & a
            // CompiledJunction. We can live without creating a flat structure
            finalVal = new CompiledJunction(new CompiledValue[] { iterOperands, reconstructedVal }, OQLLexerTokenTypes.LITERAL_and);
        }
        RuntimeIterator[][] resultMappings = new RuntimeIterator[1][];
        resultMappings[0] = resultFieldsItrMapping;
        return cartesian(new SelectResults[] { intermediateResults }, resultMappings, Collections.emptyList(), finalList, context, finalVal);
    }
}