Examples with Page org.h2.store.Page used on opensource projects

Example 1 with Page

use of org.h2.store.Page in project ignite by apache.

the class GridMapQueryExecutor method onQueryRequest0.

/**
     * @param node Node authored request.
     * @param reqId Request ID.
     * @param segmentId index segment ID.
     * @param schemaName Schema name.
     * @param qrys Queries to execute.
     * @param cacheIds Caches which will be affected by these queries.
     * @param topVer Topology version.
     * @param partsMap Partitions map for unstable topology.
     * @param parts Explicit partitions for current node.
     * @param tbls Tables.
     * @param pageSize Page size.
     * @param distributedJoinMode Query distributed join mode.
     */
private void onQueryRequest0(ClusterNode node, long reqId, int segmentId, String schemaName, Collection<GridCacheSqlQuery> qrys, List<Integer> cacheIds, AffinityTopologyVersion topVer, Map<UUID, int[]> partsMap, int[] parts, Collection<QueryTable> tbls, int pageSize, DistributedJoinMode distributedJoinMode, boolean enforceJoinOrder, boolean replicated, int timeout, Object[] params) {
    // Prepare to run queries.
    GridCacheContext<?, ?> mainCctx = !F.isEmpty(cacheIds) ? ctx.cache().context().cacheContext(cacheIds.get(0)) : null;
    NodeResults nodeRess = resultsForNode(node.id());
    QueryResults qr = null;
    List<GridReservable> reserved = new ArrayList<>();
    try {
        if (topVer != null) {
            // Reserve primary for topology version or explicit partitions.
            if (!reservePartitions(cacheIds, topVer, parts, reserved)) {
                sendRetry(node, reqId, segmentId);
                return;
            }
        }
        qr = new QueryResults(reqId, qrys.size(), mainCctx != null ? mainCctx.name() : null);
        if (nodeRess.put(reqId, segmentId, qr) != null)
            throw new IllegalStateException();
        // Prepare query context.
        GridH2QueryContext qctx = new GridH2QueryContext(ctx.localNodeId(), node.id(), reqId, segmentId, replicated ? REPLICATED : MAP).filter(h2.backupFilter(topVer, parts)).partitionsMap(partsMap).distributedJoinMode(distributedJoinMode).pageSize(pageSize).topologyVersion(topVer).reservations(reserved);
        List<GridH2Table> snapshotedTbls = null;
        if (!F.isEmpty(tbls)) {
            snapshotedTbls = new ArrayList<>(tbls.size());
            for (QueryTable tbl : tbls) {
                GridH2Table h2Tbl = h2.dataTable(tbl);
                Objects.requireNonNull(h2Tbl, tbl.toString());
                h2Tbl.snapshotIndexes(qctx, segmentId);
                snapshotedTbls.add(h2Tbl);
            }
        }
        Connection conn = h2.connectionForSchema(schemaName);
        H2Utils.setupConnection(conn, distributedJoinMode != OFF, enforceJoinOrder);
        GridH2QueryContext.set(qctx);
        // qctx is set, we have to release reservations inside of it.
        reserved = null;
        try {
            if (nodeRess.cancelled(reqId)) {
                GridH2QueryContext.clear(ctx.localNodeId(), node.id(), reqId, qctx.type());
                nodeRess.cancelRequest(reqId);
                throw new QueryCancelledException();
            }
            // Run queries.
            int qryIdx = 0;
            boolean evt = mainCctx != null && ctx.event().isRecordable(EVT_CACHE_QUERY_EXECUTED);
            for (GridCacheSqlQuery qry : qrys) {
                ResultSet rs = null;
                // If we are not the target node for this replicated query, just ignore it.
                if (qry.node() == null || (segmentId == 0 && qry.node().equals(ctx.localNodeId()))) {
                    rs = h2.executeSqlQueryWithTimer(conn, qry.query(), F.asList(qry.parameters(params)), true, timeout, qr.cancels[qryIdx]);
                    if (evt) {
                        assert mainCctx != null;
                        ctx.event().record(new CacheQueryExecutedEvent<>(node, "SQL query executed.", EVT_CACHE_QUERY_EXECUTED, CacheQueryType.SQL.name(), mainCctx.name(), null, qry.query(), null, null, params, node.id(), null));
                    }
                    assert rs instanceof JdbcResultSet : rs.getClass();
                }
                qr.addResult(qryIdx, qry, node.id(), rs, params);
                if (qr.canceled) {
                    qr.result(qryIdx).close();
                    throw new QueryCancelledException();
                }
                // Send the first page.
                sendNextPage(nodeRess, node, qr, qryIdx, segmentId, pageSize);
                qryIdx++;
            }
        } finally {
            GridH2QueryContext.clearThreadLocal();
            if (distributedJoinMode == OFF)
                qctx.clearContext(false);
            if (!F.isEmpty(snapshotedTbls)) {
                for (GridH2Table dataTbl : snapshotedTbls) dataTbl.releaseSnapshots();
            }
        }
    } catch (Throwable e) {
        if (qr != null) {
            nodeRess.remove(reqId, segmentId, qr);
            qr.cancel(false);
        }
        if (X.hasCause(e, GridH2RetryException.class))
            sendRetry(node, reqId, segmentId);
        else {
            U.error(log, "Failed to execute local query.", e);
            sendError(node, reqId, e);
            if (e instanceof Error)
                throw (Error) e;
        }
    } finally {
        if (reserved != null) {
            // Release reserved partitions.
            for (int i = 0; i < reserved.size(); i++) reserved.get(i).release();
        }
    }
}

Example 2 with Page

use of org.h2.store.Page in project ignite by apache.

the class MapQueryResult method fetchNextPage.

/**
 * @param rows Collection to fetch into.
 * @param pageSize Page size.
 * @return {@code true} If there are no more rows available.
 */
synchronized boolean fetchNextPage(List<Value[]> rows, int pageSize) {
    assert lazyWorker == null || lazyWorker == MapQueryLazyWorker.currentWorker();
    if (closed)
        return true;
    boolean readEvt = cctx != null && cctx.name() != null && cctx.events().isRecordable(EVT_CACHE_QUERY_OBJECT_READ);
    page++;
    for (int i = 0; i < pageSize; i++) {
        if (!res.next())
            return true;
        Value[] row = res.currentRow();
        if (cpNeeded) {
            boolean copied = false;
            for (int j = 0; j < row.length; j++) {
                Value val = row[j];
                if (val instanceof GridH2ValueCacheObject) {
                    GridH2ValueCacheObject valCacheObj = (GridH2ValueCacheObject) val;
                    row[j] = new GridH2ValueCacheObject(valCacheObj.getCacheObject(), h2.objectContext()) {

                        @Override
                        public Object getObject() {
                            return getObject(true);
                        }
                    };
                    copied = true;
                }
            }
            if (i == 0 && !copied)
                // No copy on read caches, skip next checks.
                cpNeeded = false;
        }
        assert row != null;
        if (readEvt) {
            GridKernalContext ctx = h2.kernalContext();
            ctx.event().record(new CacheQueryReadEvent<>(ctx.discovery().localNode(), "SQL fields query result set row read.", EVT_CACHE_QUERY_OBJECT_READ, CacheQueryType.SQL.name(), cctx.name(), null, qry.query(), null, null, params, qrySrcNodeId, null, null, null, null, row(row)));
        }
        rows.add(res.currentRow());
    }
    return false;
}

Example 3 with Page

use of org.h2.store.Page in project ignite by apache.

the class InlineIndexHelper method compareAsString.

/**
 * @param pageAddr Page address.
 * @param off Offset.
 * @param v Value to compare.
 * @param ignoreCase {@code True} if a case-insensitive comparison should be used.
 * @return Compare result ({@code -2} means we can't compare).
 */
private int compareAsString(long pageAddr, int off, Value v, boolean ignoreCase) {
    String s = v.getString();
    int len1 = PageUtils.getShort(pageAddr, off + 1) & 0x7FFF;
    int len2 = s.length();
    int c, c2, c3, c4, cntr1 = 0, cntr2 = 0;
    char v1, v2;
    // Skip length and type byte.
    long addr = pageAddr + off + 3;
    // Try reading ASCII.
    while (cntr1 < len1 && cntr2 < len2) {
        c = (int) GridUnsafe.getByte(addr) & 0xFF;
        if (c > 127)
            break;
        cntr1++;
        addr++;
        v1 = (char) c;
        v2 = s.charAt(cntr2++);
        if (ignoreCase) {
            v1 = Character.toUpperCase(v1);
            v2 = Character.toUpperCase(v2);
        }
        if (v1 != v2)
            return fixSort(Integer.signum(v1 - v2), sortType());
    }
    // read other
    while (cntr1 < len1 && cntr2 < len2) {
        c = (int) GridUnsafe.getByte(addr++) & 0xFF;
        switch(c >> 4) {
            case 0:
            case 1:
            case 2:
            case 3:
            case 4:
            case 5:
            case 6:
            case 7:
                /* 0xxxxxxx*/
                cntr1++;
                v1 = (char) c;
                break;
            case 12:
            case 13:
                /* 110x xxxx   10xx xxxx*/
                cntr1 += 2;
                if (cntr1 > len1)
                    throw new IllegalStateException("Malformed input (partial character at the end).");
                c2 = (int) GridUnsafe.getByte(addr++) & 0xFF;
                if ((c2 & 0xC0) != 0x80)
                    throw new IllegalStateException("Malformed input around byte: " + (cntr1 - 2));
                c = c & 0x1F;
                c = (c << 6) | (c2 & 0x3F);
                v1 = (char) c;
                break;
            case 14:
                /* 1110 xxxx  10xx xxxx  10xx xxxx */
                cntr1 += 3;
                if (cntr1 > len1)
                    throw new IllegalStateException("Malformed input (partial character at the end).");
                c2 = (int) GridUnsafe.getByte(addr++) & 0xFF;
                c3 = (int) GridUnsafe.getByte(addr++) & 0xFF;
                if (((c2 & 0xC0) != 0x80) || ((c3 & 0xC0) != 0x80))
                    throw new IllegalStateException("Malformed input around byte: " + (cntr1 - 3));
                c = c & 0x0F;
                c = (c << 6) | (c2 & 0x3F);
                c = (c << 6) | (c3 & 0x3F);
                v1 = (char) c;
                break;
            case 15:
                /* 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */
                cntr1 += 4;
                if (cntr1 > len1)
                    throw new IllegalStateException("Malformed input (partial character at the end).");
                c2 = (int) GridUnsafe.getByte(addr++) & 0xFF;
                c3 = (int) GridUnsafe.getByte(addr++) & 0xFF;
                c4 = (int) GridUnsafe.getByte(addr++) & 0xFF;
                if (((c & 0xF8) != 0xf0) || ((c2 & 0xC0) != 0x80) || ((c3 & 0xC0) != 0x80) || ((c4 & 0xC0) != 0x80))
                    throw new IllegalStateException("Malformed input around byte: " + (cntr1 - 4));
                c = c & 0x07;
                c = (c << 6) | (c2 & 0x3F);
                c = (c << 6) | (c3 & 0x3F);
                c = (c << 6) | (c4 & 0x3F);
                // Subtract 0x010000, c is now 0..fffff (20 bits)
                c = c - 0x010000;
                // height surrogate
                v1 = (char) (0xD800 + ((c >> 10) & 0x7FF));
                v2 = s.charAt(cntr2++);
                if (v1 != v2)
                    return fixSort(Integer.signum(v1 - v2), sortType());
                if (cntr2 == len2)
                    // Finish comparison here.
                    return fixSort(1, sortType());
                // Low surrogate.
                v1 = (char) (0xDC00 + (c & 0x3FF));
                v2 = s.charAt(cntr2++);
                if (v1 != v2)
                    return fixSort(Integer.signum(v1 - v2), sortType());
                continue;
            default:
                /* 10xx xxxx */
                throw new IllegalStateException("Malformed input around byte: " + cntr1);
        }
        v2 = s.charAt(cntr2++);
        if (ignoreCase) {
            v1 = Character.toUpperCase(v1);
            v2 = Character.toUpperCase(v2);
        }
        if (v1 != v2)
            return fixSort(Integer.signum(v1 - v2), sortType());
    }
    int res = cntr1 == len1 && cntr2 == len2 ? 0 : cntr1 == len1 ? -1 : 1;
    if (isValueFull(pageAddr, off))
        return fixSort(res, sortType());
    if (res >= 0)
        // b) Even truncated current value is longer, so that it's bigger.
        return fixSort(1, sortType());
    return -2;
}

Example 4 with Page

use of org.h2.store.Page in project ignite by apache.

the class InlineIndexHelper method compare.

/**
 * @param pageAddr Page address.
 * @param off Offset.
 * @param maxSize Maximum size to read.
 * @param v Value to compare.
 * @param comp Comparator.
 * @return Compare result (-2 means we can't compare).
 */
public int compare(long pageAddr, int off, int maxSize, Value v, Comparator<Value> comp) {
    int c = tryCompareOptimized(pageAddr, off, maxSize, v);
    if (c != Integer.MIN_VALUE)
        return c;
    Value v1 = get(pageAddr, off, maxSize);
    if (v1 == null)
        return -2;
    c = Integer.signum(comp.compare(v1, v));
    if (size > 0)
        return fixSort(c, sortType());
    if (isValueFull(pageAddr, off) || canRelyOnCompare(c, v1, v))
        return fixSort(c, sortType());
    return -2;
}

Example 5 with Page

use of org.h2.store.Page in project ignite by apache.

the class GridMapQueryExecutor method onQueryRequest0.

/**
 * @param node Node authored request.
 * @param reqId Request ID.
 * @param segmentId index segment ID.
 * @param schemaName Schema name.
 * @param qrys Queries to execute.
 * @param cacheIds Caches which will be affected by these queries.
 * @param topVer Topology version.
 * @param partsMap Partitions map for unstable topology.
 * @param parts Explicit partitions for current node.
 * @param pageSize Page size.
 * @param distributedJoinMode Query distributed join mode.
 * @param lazy Streaming flag.
 */
private void onQueryRequest0(final ClusterNode node, final long reqId, final int segmentId, final String schemaName, final Collection<GridCacheSqlQuery> qrys, final List<Integer> cacheIds, final AffinityTopologyVersion topVer, final Map<UUID, int[]> partsMap, final int[] parts, final int pageSize, final DistributedJoinMode distributedJoinMode, final boolean enforceJoinOrder, final boolean replicated, final int timeout, final Object[] params, boolean lazy) {
    if (lazy && MapQueryLazyWorker.currentWorker() == null) {
        // Lazy queries must be re-submitted to dedicated workers.
        MapQueryLazyWorkerKey key = new MapQueryLazyWorkerKey(node.id(), reqId, segmentId);
        MapQueryLazyWorker worker = new MapQueryLazyWorker(ctx.igniteInstanceName(), key, log, this);
        worker.submit(new Runnable() {

            @Override
            public void run() {
                onQueryRequest0(node, reqId, segmentId, schemaName, qrys, cacheIds, topVer, partsMap, parts, pageSize, distributedJoinMode, enforceJoinOrder, replicated, timeout, params, true);
            }
        });
        if (lazyWorkerBusyLock.enterBusy()) {
            try {
                MapQueryLazyWorker oldWorker = lazyWorkers.put(key, worker);
                if (oldWorker != null)
                    oldWorker.stop();
                IgniteThread thread = new IgniteThread(worker);
                thread.start();
            } finally {
                lazyWorkerBusyLock.leaveBusy();
            }
        } else
            log.info("Ignored query request (node is stopping) [nodeId=" + node.id() + ", reqId=" + reqId + ']');
        return;
    }
    // Prepare to run queries.
    GridCacheContext<?, ?> mainCctx = !F.isEmpty(cacheIds) ? ctx.cache().context().cacheContext(cacheIds.get(0)) : null;
    MapNodeResults nodeRess = resultsForNode(node.id());
    MapQueryResults qr = null;
    List<GridReservable> reserved = new ArrayList<>();
    try {
        if (topVer != null) {
            // Reserve primary for topology version or explicit partitions.
            if (!reservePartitions(cacheIds, topVer, parts, reserved)) {
                // Unregister lazy worker because re-try may never reach this node again.
                if (lazy)
                    stopAndUnregisterCurrentLazyWorker();
                sendRetry(node, reqId, segmentId);
                return;
            }
        }
        qr = new MapQueryResults(h2, reqId, qrys.size(), mainCctx, MapQueryLazyWorker.currentWorker());
        if (nodeRess.put(reqId, segmentId, qr) != null)
            throw new IllegalStateException();
        // Prepare query context.
        GridH2QueryContext qctx = new GridH2QueryContext(ctx.localNodeId(), node.id(), reqId, segmentId, replicated ? REPLICATED : MAP).filter(h2.backupFilter(topVer, parts)).partitionsMap(partsMap).distributedJoinMode(distributedJoinMode).pageSize(pageSize).topologyVersion(topVer).reservations(reserved);
        Connection conn = h2.connectionForSchema(schemaName);
        H2Utils.setupConnection(conn, distributedJoinMode != OFF, enforceJoinOrder);
        GridH2QueryContext.set(qctx);
        // qctx is set, we have to release reservations inside of it.
        reserved = null;
        try {
            if (nodeRess.cancelled(reqId)) {
                GridH2QueryContext.clear(ctx.localNodeId(), node.id(), reqId, qctx.type());
                nodeRess.cancelRequest(reqId);
                throw new QueryCancelledException();
            }
            // Run queries.
            int qryIdx = 0;
            boolean evt = mainCctx != null && mainCctx.events().isRecordable(EVT_CACHE_QUERY_EXECUTED);
            for (GridCacheSqlQuery qry : qrys) {
                ResultSet rs = null;
                // If we are not the target node for this replicated query, just ignore it.
                if (qry.node() == null || (segmentId == 0 && qry.node().equals(ctx.localNodeId()))) {
                    rs = h2.executeSqlQueryWithTimer(conn, qry.query(), F.asList(qry.parameters(params)), true, timeout, qr.queryCancel(qryIdx));
                    if (evt) {
                        ctx.event().record(new CacheQueryExecutedEvent<>(node, "SQL query executed.", EVT_CACHE_QUERY_EXECUTED, CacheQueryType.SQL.name(), mainCctx.name(), null, qry.query(), null, null, params, node.id(), null));
                    }
                    assert rs instanceof JdbcResultSet : rs.getClass();
                }
                qr.addResult(qryIdx, qry, node.id(), rs, params);
                if (qr.cancelled()) {
                    qr.result(qryIdx).close();
                    throw new QueryCancelledException();
                }
                // Send the first page.
                sendNextPage(nodeRess, node, qr, qryIdx, segmentId, pageSize);
                qryIdx++;
            }
            // All request results are in the memory in result set already, so it's ok to release partitions.
            if (!lazy)
                releaseReservations();
        } catch (Throwable e) {
            releaseReservations();
            throw e;
        }
    } catch (Throwable e) {
        if (qr != null) {
            nodeRess.remove(reqId, segmentId, qr);
            qr.cancel(false);
        }
        // Unregister worker after possible cancellation.
        if (lazy)
            stopAndUnregisterCurrentLazyWorker();
        if (X.hasCause(e, GridH2RetryException.class))
            sendRetry(node, reqId, segmentId);
        else {
            U.error(log, "Failed to execute local query.", e);
            sendError(node, reqId, e);
            if (e instanceof Error)
                throw (Error) e;
        }
    } finally {
        if (reserved != null) {
            // Release reserved partitions.
            for (int i = 0; i < reserved.size(); i++) reserved.get(i).release();
        }
    }
}