Examples with IndexRowComparator org.apache.ignite.internal.cache.query.index.sorted.IndexRowComparator used on opensource projects

Example 1 with IndexRowComparator

use of org.apache.ignite.internal.cache.query.index.sorted.IndexRowComparator in project ignite by apache.

the class IndexQueryProcessor method mergeIndexQueryCriteria.

/**
 * Merges multiple criteria for the same field into single criterion.
 */
private Map<String, RangeIndexQueryCriterion> mergeIndexQueryCriteria(InlineIndexImpl idx, SortedIndexDefinition idxDef, IndexQueryDesc idxQryDesc) throws IgniteCheckedException {
    Map<String, RangeIndexQueryCriterion> mergedCriteria = new HashMap<>();
    Map<String, IndexKeyDefinition> idxFlds = idxDef.indexKeyDefinitions();
    IndexKeyTypeSettings keyTypeSettings = idx.segment(0).rowHandler().indexKeyTypeSettings();
    CacheObjectContext coctx = idx.segment(0).cacheGroupContext().cacheObjectContext();
    IndexRowComparator keyCmp = idxDef.rowComparator();
    for (IndexQueryCriterion c : idxQryDesc.criteria()) {
        RangeIndexQueryCriterion crit = (RangeIndexQueryCriterion) c;
        String fldName = idxFlds.containsKey(crit.field()) ? crit.field() : QueryUtils.normalizeObjectName(crit.field(), false);
        IndexKeyDefinition keyDef = idxFlds.get(fldName);
        if (keyDef == null)
            throw failIndexQuery("Index doesn't match criteria", idxDef, idxQryDesc);
        IndexKey l = key(crit.lower(), crit.lowerNull(), keyDef, keyTypeSettings, coctx);
        IndexKey u = key(crit.upper(), crit.upperNull(), keyDef, keyTypeSettings, coctx);
        if (l != null && u != null && keyCmp.compareKey(l, u) > 0) {
            throw failIndexQuery("Illegal criterion: lower boundary is greater than the upper boundary: " + rangeDesc(crit, fldName, null, null), idxDef, idxQryDesc);
        }
        boolean lowIncl = crit.lowerIncl();
        boolean upIncl = crit.upperIncl();
        boolean lowNull = crit.lowerNull();
        boolean upNull = crit.upperNull();
        if (mergedCriteria.containsKey(fldName)) {
            RangeIndexQueryCriterion prev = mergedCriteria.get(fldName);
            IndexKey prevLower = (IndexKey) prev.lower();
            IndexKey prevUpper = (IndexKey) prev.upper();
            // Validate merged criteria.
            if (!checkBoundaries(l, prevUpper, crit.lowerIncl(), prev.upperIncl(), keyCmp) || !checkBoundaries(prevLower, u, prev.lowerIncl(), crit.upperIncl(), keyCmp)) {
                String prevDesc = rangeDesc(prev, null, prevLower == null ? null : prevLower.key(), prevUpper == null ? null : prevUpper.key());
                throw failIndexQuery("Failed to merge criterion " + rangeDesc(crit, fldName, null, null) + " with previous criteria range " + prevDesc, idxDef, idxQryDesc);
            }
            int lowCmp = 0;
            // Use previous lower boudary, as it's greater than the current.
            if (l == null || (prevLower != null && (lowCmp = keyCmp.compareKey(prevLower, l)) >= 0)) {
                l = prevLower;
                lowIncl = lowCmp != 0 ? prev.lowerIncl() : prev.lowerIncl() ? lowIncl : prev.lowerIncl();
                lowNull = prev.lowerNull();
            }
            int upCmp = 0;
            // Use previous upper boudary, as it's less than the current.
            if (u == null || (prevUpper != null && (upCmp = keyCmp.compareKey(prevUpper, u)) <= 0)) {
                u = prevUpper;
                upIncl = upCmp != 0 ? prev.upperIncl() : prev.upperIncl() ? upIncl : prev.upperIncl();
                upNull = prev.upperNull();
            }
        }
        RangeIndexQueryCriterion idxKeyCrit = new RangeIndexQueryCriterion(fldName, l, u);
        idxKeyCrit.lowerIncl(lowIncl);
        idxKeyCrit.upperIncl(upIncl);
        idxKeyCrit.lowerNull(lowNull);
        idxKeyCrit.upperNull(upNull);
        mergedCriteria.put(fldName, idxKeyCrit);
    }
    return mergedCriteria;
}