Examples with Cache org.h2.util.Cache used on opensource projects

Example 1 with Cache

use of org.h2.util.Cache in project ignite by apache.

the class DmlStatementsProcessor method getPlanForStatement.

/**
     * Generate SELECT statements to retrieve data for modifications from and find fast UPDATE or DELETE args,
     * if available.
     *
     * @param schema Schema.
     * @param prepStmt JDBC statement.
     * @return Update plan.
     */
@SuppressWarnings({ "unchecked", "ConstantConditions" })
private UpdatePlan getPlanForStatement(String schema, PreparedStatement prepStmt, @Nullable Integer errKeysPos) throws IgniteCheckedException {
    Prepared p = GridSqlQueryParser.prepared(prepStmt);
    H2DmlPlanKey planKey = new H2DmlPlanKey(schema, p.getSQL());
    UpdatePlan res = (errKeysPos == null ? planCache.get(planKey) : null);
    if (res != null)
        return res;
    res = UpdatePlanBuilder.planForStatement(p, errKeysPos);
    // Don't cache re-runs
    if (errKeysPos == null)
        return U.firstNotNull(planCache.putIfAbsent(planKey, res), res);
    else
        return res;
}

Example 2 with Cache

use of org.h2.util.Cache in project ignite by apache.

the class H2RowDescriptor method wrap.

/** {@inheritDoc} */
@SuppressWarnings("ConstantConditions")
@Override
public Value wrap(Object obj, int type) throws IgniteCheckedException {
    assert obj != null;
    if (obj instanceof CacheObject) {
        // Handle cache object.
        CacheObject co = (CacheObject) obj;
        if (type == Value.JAVA_OBJECT)
            return new GridH2ValueCacheObject(co, idx.objectContext());
        obj = co.value(idx.objectContext(), false);
    }
    switch(type) {
        case Value.BOOLEAN:
            return ValueBoolean.get((Boolean) obj);
        case Value.BYTE:
            return ValueByte.get((Byte) obj);
        case Value.SHORT:
            return ValueShort.get((Short) obj);
        case Value.INT:
            return ValueInt.get((Integer) obj);
        case Value.FLOAT:
            return ValueFloat.get((Float) obj);
        case Value.LONG:
            return ValueLong.get((Long) obj);
        case Value.DOUBLE:
            return ValueDouble.get((Double) obj);
        case Value.UUID:
            UUID uuid = (UUID) obj;
            return ValueUuid.get(uuid.getMostSignificantBits(), uuid.getLeastSignificantBits());
        case Value.DATE:
            return ValueDate.get((Date) obj);
        case Value.TIME:
            return ValueTime.get((Time) obj);
        case Value.TIMESTAMP:
            if (obj instanceof java.util.Date && !(obj instanceof Timestamp))
                obj = new Timestamp(((java.util.Date) obj).getTime());
            return ValueTimestamp.get((Timestamp) obj);
        case Value.DECIMAL:
            return ValueDecimal.get((BigDecimal) obj);
        case Value.STRING:
            return ValueString.get(obj.toString());
        case Value.BYTES:
            return ValueBytes.get((byte[]) obj);
        case Value.JAVA_OBJECT:
            return ValueJavaObject.getNoCopy(obj, null, null);
        case Value.ARRAY:
            Object[] arr = (Object[]) obj;
            Value[] valArr = new Value[arr.length];
            for (int i = 0; i < arr.length; i++) {
                Object o = arr[i];
                valArr[i] = o == null ? ValueNull.INSTANCE : wrap(o, DataType.getTypeFromClass(o.getClass()));
            }
            return ValueArray.get(valArr);
        case Value.GEOMETRY:
            return ValueGeometry.getFromGeometry(obj);
    }
    throw new IgniteCheckedException("Failed to wrap value[type=" + type + ", value=" + obj + "]");
}

Example 3 with Cache

use of org.h2.util.Cache in project ignite by apache.

the class DmlStatementsProcessor method streamUpdateQuery.

/**
     * Perform given statement against given data streamer. Only rows based INSERT and MERGE are supported
     * as well as key bound UPDATE and DELETE (ones with filter {@code WHERE _key = ?}).
     *
     * @param streamer Streamer to feed data to.
     * @param stmt Statement.
     * @param args Statement arguments.
     * @return Number of rows in given statement for INSERT and MERGE, {@code 1} otherwise.
     * @throws IgniteCheckedException if failed.
     */
@SuppressWarnings({ "unchecked", "ConstantConditions" })
long streamUpdateQuery(IgniteDataStreamer streamer, PreparedStatement stmt, Object[] args) throws IgniteCheckedException {
    args = U.firstNotNull(args, X.EMPTY_OBJECT_ARRAY);
    Prepared p = GridSqlQueryParser.prepared(stmt);
    assert p != null;
    UpdatePlan plan = UpdatePlanBuilder.planForStatement(p, null);
    if (!F.eq(streamer.cacheName(), plan.tbl.rowDescriptor().context().name()))
        throw new IgniteSQLException("Cross cache streaming is not supported, please specify cache explicitly" + " in connection options", IgniteQueryErrorCode.UNSUPPORTED_OPERATION);
    if (plan.mode == UpdateMode.INSERT && plan.rowsNum > 0) {
        assert plan.isLocSubqry;
        final GridCacheContext cctx = plan.tbl.rowDescriptor().context();
        QueryCursorImpl<List<?>> cur;
        final ArrayList<List<?>> data = new ArrayList<>(plan.rowsNum);
        final GridQueryFieldsResult res = idx.queryLocalSqlFields(idx.schema(cctx.name()), plan.selectQry, F.asList(args), null, false, 0, null);
        QueryCursorImpl<List<?>> stepCur = new QueryCursorImpl<>(new Iterable<List<?>>() {

            @Override
            public Iterator<List<?>> iterator() {
                try {
                    return new GridQueryCacheObjectsIterator(res.iterator(), idx.objectContext(), cctx.keepBinary());
                } catch (IgniteCheckedException e) {
                    throw new IgniteException(e);
                }
            }
        }, null);
        data.addAll(stepCur.getAll());
        cur = new QueryCursorImpl<>(new Iterable<List<?>>() {

            @Override
            public Iterator<List<?>> iterator() {
                return data.iterator();
            }
        }, null);
        if (plan.rowsNum == 1) {
            IgniteBiTuple t = rowToKeyValue(cctx, cur.iterator().next(), plan);
            streamer.addData(t.getKey(), t.getValue());
            return 1;
        }
        Map<Object, Object> rows = new LinkedHashMap<>(plan.rowsNum);
        for (List<?> row : cur) {
            final IgniteBiTuple t = rowToKeyValue(cctx, row, plan);
            rows.put(t.getKey(), t.getValue());
        }
        streamer.addData(rows);
        return rows.size();
    } else
        throw new IgniteSQLException("Only tuple based INSERT statements are supported in streaming mode", IgniteQueryErrorCode.UNSUPPORTED_OPERATION);
}

Example 4 with Cache

use of org.h2.util.Cache in project ignite by apache.

the class IgniteH2Indexing method queryDistributedSqlFields.

/** {@inheritDoc} */
@Override
public FieldsQueryCursor<List<?>> queryDistributedSqlFields(String schemaName, SqlFieldsQuery qry, boolean keepBinary, GridQueryCancel cancel, @Nullable Integer mainCacheId) {
    final String sqlQry = qry.getSql();
    Connection c = connectionForSchema(schemaName);
    final boolean enforceJoinOrder = qry.isEnforceJoinOrder();
    final boolean distributedJoins = qry.isDistributedJoins();
    final boolean grpByCollocated = qry.isCollocated();
    final DistributedJoinMode distributedJoinMode = distributedJoinMode(qry.isLocal(), distributedJoins);
    GridCacheTwoStepQuery twoStepQry = null;
    List<GridQueryFieldMetadata> meta;
    final H2TwoStepCachedQueryKey cachedQryKey = new H2TwoStepCachedQueryKey(schemaName, sqlQry, grpByCollocated, distributedJoins, enforceJoinOrder, qry.isLocal());
    H2TwoStepCachedQuery cachedQry = twoStepCache.get(cachedQryKey);
    if (cachedQry != null) {
        twoStepQry = cachedQry.query().copy();
        meta = cachedQry.meta();
    } else {
        final UUID locNodeId = ctx.localNodeId();
        // Here we will just parse the statement, no need to optimize it at all.
        H2Utils.setupConnection(c, /*distributedJoins*/
        false, /*enforceJoinOrder*/
        true);
        GridH2QueryContext.set(new GridH2QueryContext(locNodeId, locNodeId, 0, PREPARE).distributedJoinMode(distributedJoinMode));
        PreparedStatement stmt = null;
        Prepared prepared;
        boolean cachesCreated = false;
        try {
            try {
                while (true) {
                    try {
                        // Do not cache this statement because the whole query object will be cached later on.
                        stmt = prepareStatement(c, sqlQry, false);
                        break;
                    } catch (SQLException e) {
                        if (!cachesCreated && (e.getErrorCode() == ErrorCode.SCHEMA_NOT_FOUND_1 || e.getErrorCode() == ErrorCode.TABLE_OR_VIEW_NOT_FOUND_1 || e.getErrorCode() == ErrorCode.INDEX_NOT_FOUND_1)) {
                            try {
                                ctx.cache().createMissingQueryCaches();
                            } catch (IgniteCheckedException ignored) {
                                throw new CacheException("Failed to create missing caches.", e);
                            }
                            cachesCreated = true;
                        } else
                            throw new IgniteSQLException("Failed to parse query: " + sqlQry, IgniteQueryErrorCode.PARSING, e);
                    }
                }
                prepared = GridSqlQueryParser.prepared(stmt);
                if (qry instanceof JdbcSqlFieldsQuery && ((JdbcSqlFieldsQuery) qry).isQuery() != prepared.isQuery())
                    throw new IgniteSQLException("Given statement type does not match that declared by JDBC driver", IgniteQueryErrorCode.STMT_TYPE_MISMATCH);
                if (prepared.isQuery()) {
                    bindParameters(stmt, F.asList(qry.getArgs()));
                    twoStepQry = GridSqlQuerySplitter.split((JdbcPreparedStatement) stmt, qry.getArgs(), grpByCollocated, distributedJoins, enforceJoinOrder, this);
                    assert twoStepQry != null;
                }
            } finally {
                GridH2QueryContext.clearThreadLocal();
            }
            // It is a DML statement if we did not create a twoStepQuery.
            if (twoStepQry == null) {
                if (DmlStatementsProcessor.isDmlStatement(prepared)) {
                    try {
                        return dmlProc.updateSqlFieldsDistributed(schemaName, stmt, qry, cancel);
                    } catch (IgniteCheckedException e) {
                        throw new IgniteSQLException("Failed to execute DML statement [stmt=" + sqlQry + ", params=" + Arrays.deepToString(qry.getArgs()) + "]", e);
                    }
                }
                if (DdlStatementsProcessor.isDdlStatement(prepared)) {
                    try {
                        return ddlProc.runDdlStatement(sqlQry, stmt);
                    } catch (IgniteCheckedException e) {
                        throw new IgniteSQLException("Failed to execute DDL statement [stmt=" + sqlQry + ']', e);
                    }
                }
            }
            LinkedHashSet<Integer> caches0 = new LinkedHashSet<>();
            assert twoStepQry != null;
            int tblCnt = twoStepQry.tablesCount();
            if (mainCacheId != null)
                caches0.add(mainCacheId);
            if (tblCnt > 0) {
                for (QueryTable tblKey : twoStepQry.tables()) {
                    GridH2Table tbl = dataTable(tblKey);
                    int cacheId = CU.cacheId(tbl.cacheName());
                    caches0.add(cacheId);
                }
            }
            if (caches0.isEmpty())
                twoStepQry.local(true);
            else {
                //Prohibit usage indices with different numbers of segments in same query.
                List<Integer> cacheIds = new ArrayList<>(caches0);
                checkCacheIndexSegmentation(cacheIds);
                twoStepQry.cacheIds(cacheIds);
                twoStepQry.local(qry.isLocal());
            }
            meta = H2Utils.meta(stmt.getMetaData());
        } catch (IgniteCheckedException e) {
            throw new CacheException("Failed to bind parameters: [qry=" + sqlQry + ", params=" + Arrays.deepToString(qry.getArgs()) + "]", e);
        } catch (SQLException e) {
            throw new IgniteSQLException(e);
        } finally {
            U.close(stmt, log);
        }
    }
    if (log.isDebugEnabled())
        log.debug("Parsed query: `" + sqlQry + "` into two step query: " + twoStepQry);
    twoStepQry.pageSize(qry.getPageSize());
    if (cancel == null)
        cancel = new GridQueryCancel();
    int[] partitions = qry.getPartitions();
    if (partitions == null && twoStepQry.derivedPartitions() != null) {
        try {
            partitions = calculateQueryPartitions(twoStepQry.derivedPartitions(), qry.getArgs());
        } catch (IgniteCheckedException e) {
            throw new CacheException("Failed to calculate derived partitions: [qry=" + sqlQry + ", params=" + Arrays.deepToString(qry.getArgs()) + "]", e);
        }
    }
    QueryCursorImpl<List<?>> cursor = new QueryCursorImpl<>(runQueryTwoStep(schemaName, twoStepQry, keepBinary, enforceJoinOrder, qry.getTimeout(), cancel, qry.getArgs(), partitions), cancel);
    cursor.fieldsMeta(meta);
    if (cachedQry == null && !twoStepQry.explain()) {
        cachedQry = new H2TwoStepCachedQuery(meta, twoStepQry.copy());
        twoStepCache.putIfAbsent(cachedQryKey, cachedQry);
    }
    return cursor;
}

Example 5 with Cache

use of org.h2.util.Cache in project ignite by apache.

the class IgniteH2Indexing method parseAndSplit.

/**
 * Parse and split query if needed, cache either two-step query or statement.
 * @param schemaName Schema name.
 * @param qry Query.
 * @param firstArg Position of the first argument of the following {@code Prepared}.
 * @return Result: prepared statement, H2 command, two-step query (if needed),
 *     metadata for two-step query (if needed), evaluated query local execution flag.
 */
private ParsingResult parseAndSplit(String schemaName, SqlFieldsQuery qry, int firstArg) {
    Connection c = connectionForSchema(schemaName);
    // For queries that are explicitly local, we rely on the flag specified in the query
    // because this parsing result will be cached and used for queries directly.
    // For other queries, we enforce join order at this stage to avoid premature optimizations
    // (and therefore longer parsing) as long as there'll be more parsing at split stage.
    boolean enforceJoinOrderOnParsing = (!qry.isLocal() || qry.isEnforceJoinOrder());
    H2Utils.setupConnection(c, /*distributedJoins*/
    false, /*enforceJoinOrder*/
    enforceJoinOrderOnParsing);
    boolean loc = qry.isLocal();
    PreparedStatement stmt = prepareStatementAndCaches(c, qry.getSql());
    if (loc && GridSqlQueryParser.checkMultipleStatements(stmt))
        throw new IgniteSQLException("Multiple statements queries are not supported for local queries");
    GridSqlQueryParser.PreparedWithRemaining prep = GridSqlQueryParser.preparedWithRemaining(stmt);
    Prepared prepared = prep.prepared();
    checkQueryType(qry, prepared.isQuery());
    String remainingSql = prep.remainingSql();
    int paramsCnt = prepared.getParameters().size();
    Object[] argsOrig = qry.getArgs();
    Object[] args = null;
    if (!DmlUtils.isBatched(qry) && paramsCnt > 0) {
        if (argsOrig == null || argsOrig.length < firstArg + paramsCnt) {
            throw new IgniteException("Invalid number of query parameters. " + "Cannot find " + (argsOrig != null ? argsOrig.length + 1 - firstArg : 1) + " parameter.");
        }
        args = Arrays.copyOfRange(argsOrig, firstArg, firstArg + paramsCnt);
    }
    if (prepared.isQuery()) {
        try {
            bindParameters(stmt, F.asList(args));
        } catch (IgniteCheckedException e) {
            U.closeQuiet(stmt);
            throw new IgniteSQLException("Failed to bind parameters: [qry=" + prepared.getSQL() + ", params=" + Arrays.deepToString(args) + "]", IgniteQueryErrorCode.PARSING, e);
        }
        GridSqlQueryParser parser = null;
        if (!loc) {
            parser = new GridSqlQueryParser(false);
            GridSqlStatement parsedStmt = parser.parse(prepared);
            // Legit assertion - we have H2 query flag above.
            assert parsedStmt instanceof GridSqlQuery;
            loc = parser.isLocalQuery(qry.isReplicatedOnly());
        }
        if (loc) {
            if (parser == null) {
                parser = new GridSqlQueryParser(false);
                parser.parse(prepared);
            }
            GridCacheContext cctx = parser.getFirstPartitionedCache();
            if (cctx != null && cctx.config().getQueryParallelism() > 1) {
                loc = false;
                qry.setDistributedJoins(true);
            }
        }
    }
    SqlFieldsQuery newQry = cloneFieldsQuery(qry).setSql(prepared.getSQL()).setArgs(args);
    boolean hasTwoStep = !loc && prepared.isQuery();
    // Let's not cache multiple statements and distributed queries as whole two step query will be cached later on.
    if (remainingSql != null || hasTwoStep)
        getStatementsCacheForCurrentThread().remove(schemaName, qry.getSql());
    if (!hasTwoStep)
        return new ParsingResult(prepared, newQry, remainingSql, null, null, null);
    final UUID locNodeId = ctx.localNodeId();
    // Now we're sure to have a distributed query. Let's try to get a two-step plan from the cache, or perform the
    // split if needed.
    H2TwoStepCachedQueryKey cachedQryKey = new H2TwoStepCachedQueryKey(schemaName, qry.getSql(), qry.isCollocated(), qry.isDistributedJoins(), qry.isEnforceJoinOrder(), qry.isLocal());
    H2TwoStepCachedQuery cachedQry;
    if ((cachedQry = twoStepCache.get(cachedQryKey)) != null) {
        checkQueryType(qry, true);
        GridCacheTwoStepQuery twoStepQry = cachedQry.query().copy();
        List<GridQueryFieldMetadata> meta = cachedQry.meta();
        return new ParsingResult(prepared, newQry, remainingSql, twoStepQry, cachedQryKey, meta);
    }
    try {
        GridH2QueryContext.set(new GridH2QueryContext(locNodeId, locNodeId, 0, PREPARE).distributedJoinMode(distributedJoinMode(qry.isLocal(), qry.isDistributedJoins())));
        try {
            return new ParsingResult(prepared, newQry, remainingSql, split(prepared, newQry), cachedQryKey, H2Utils.meta(stmt.getMetaData()));
        } catch (IgniteCheckedException e) {
            throw new IgniteSQLException("Failed to bind parameters: [qry=" + newQry.getSql() + ", params=" + Arrays.deepToString(newQry.getArgs()) + "]", IgniteQueryErrorCode.PARSING, e);
        } catch (SQLException e) {
            throw new IgniteSQLException(e);
        } finally {
            U.close(stmt, log);
        }
    } finally {
        GridH2QueryContext.clearThreadLocal();
    }
}