Package org.lealone.util

Examples of org.lealone.util.IntArray

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    }

    public synchronized PlanItem getBestPlanItem(Session session, int[] masks, SortOrder sortOrder) {
        PlanItem item = new PlanItem();
        item.cost = index.getCost(session, masks, sortOrder);
        IntArray masksArray = new IntArray(masks == null ? Utils.EMPTY_INT_ARRAY : masks);
        SynchronizedVerifier.check(indexCache);
        ViewIndex i2 = indexCache.get(masksArray);
        if (i2 == null || i2.getSession() != session) {
            i2 = new ViewIndex(this, index, session, masks);
            indexCache.put(masksArray, i2);
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    public synchronized double getCost(Session session, int[] masks, SortOrder sortOrder) {
        if (recursive) {
            return 1000;
        }
        IntArray masksArray = new IntArray(masks == null ? Utils.EMPTY_INT_ARRAY : masks);
        SynchronizedVerifier.check(costCache);
        CostElement cachedCost = costCache.get(masksArray);
        if (cachedCost != null) {
            long time = System.currentTimeMillis();
            if (time < cachedCost.evaluatedAt + Constants.VIEW_COST_CACHE_MAX_AGE) {
                return cachedCost.cost;
            }
        }
        Query q = (Query) session.prepare(querySQL, true);
        if (masks != null) {
            IntArray paramIndex = new IntArray();
            for (int i = 0; i < masks.length; i++) {
                int mask = masks[i];
                if (mask == 0) {
                    continue;
                }
                paramIndex.add(i);
            }
            int len = paramIndex.size();
            for (int i = 0; i < len; i++) {
                int idx = paramIndex.get(i);
                int mask = masks[idx];
                int nextParamIndex = q.getParameters().size() + view.getParameterOffset();
                if ((mask & IndexCondition.EQUALITY) != 0) {
                    Parameter param = new Parameter(nextParamIndex);
                    q.addGlobalCondition(param, idx, Comparison.EQUAL_NULL_SAFE);
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        if (!q.allowGlobalConditions()) {
            return q;
        }
        int firstIndexParam = originalParameters == null ? 0 : originalParameters.size();
        firstIndexParam += view.getParameterOffset();
        IntArray paramIndex = new IntArray();
        int indexColumnCount = 0;
        for (int i = 0; i < masks.length; i++) {
            int mask = masks[i];
            if (mask == 0) {
                continue;
            }
            indexColumnCount++;
            paramIndex.add(i);
            if (Integer.bitCount(mask) > 1) {
                // two parameters for range queries: >= x AND <= y
                paramIndex.add(i);
            }
        }
        int len = paramIndex.size();
        ArrayList<Column> columnList = New.arrayList();
        for (int i = 0; i < len;) {
            int idx = paramIndex.get(i);
            columnList.add(table.getColumn(idx));
            int mask = masks[idx];
            if ((mask & IndexCondition.EQUALITY) == IndexCondition.EQUALITY) {
                Parameter param = new Parameter(firstIndexParam + i);
                q.addGlobalCondition(param, idx, Comparison.EQUAL_NULL_SAFE);
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Related Classes of org.lealone.util.IntArray

  • org.lealone.dbobject.index.ViewIndex
  • org.lealone.dbobject.table.TableView
  • org.lealone.util.StatementBuilder
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