Examples with Prepared org.h2.test.db.Db.Prepared used on opensource projects

Example 6 with Prepared

use of org.h2.test.db.Db.Prepared in project ignite by apache.

the class IgniteH2Indexing method doRunPrepared.

/**
 * Execute an all-ready {@link SqlFieldsQuery}.
 * @param schemaName Schema name.
 * @param prepared H2 command.
 * @param qry Fields query with flags.
 * @param twoStepQry Two-step query if this query must be executed in a distributed way.
 * @param meta Metadata for {@code twoStepQry}.
 * @param keepBinary Whether binary objects must not be deserialized automatically.
 * @param cancel Query cancel state holder.    @return Query result.
 */
private List<? extends FieldsQueryCursor<List<?>>> doRunPrepared(String schemaName, Prepared prepared, SqlFieldsQuery qry, GridCacheTwoStepQuery twoStepQry, List<GridQueryFieldMetadata> meta, boolean keepBinary, GridQueryCancel cancel) {
    String sqlQry = qry.getSql();
    boolean loc = qry.isLocal();
    IndexingQueryFilter filter = (loc ? backupFilter(null, qry.getPartitions()) : null);
    if (!prepared.isQuery()) {
        if (DmlStatementsProcessor.isDmlStatement(prepared)) {
            try {
                Connection conn = connectionForSchema(schemaName);
                if (!loc)
                    return dmlProc.updateSqlFieldsDistributed(schemaName, conn, prepared, qry, cancel);
                else {
                    final GridQueryFieldsResult updRes = dmlProc.updateSqlFieldsLocal(schemaName, conn, prepared, qry, filter, cancel);
                    return Collections.singletonList(new QueryCursorImpl<>(new Iterable<List<?>>() {

                        @Override
                        public Iterator<List<?>> iterator() {
                            try {
                                return new GridQueryCacheObjectsIterator(updRes.iterator(), objectContext(), true);
                            } catch (IgniteCheckedException e) {
                                throw new IgniteException(e);
                            }
                        }
                    }, cancel));
                }
            } catch (IgniteCheckedException e) {
                throw new IgniteSQLException("Failed to execute DML statement [stmt=" + sqlQry + ", params=" + Arrays.deepToString(qry.getArgs()) + "]", e);
            }
        }
        if (DdlStatementsProcessor.isDdlStatement(prepared)) {
            if (loc)
                throw new IgniteSQLException("DDL statements are not supported for LOCAL caches", IgniteQueryErrorCode.UNSUPPORTED_OPERATION);
            try {
                return Collections.singletonList(ddlProc.runDdlStatement(sqlQry, prepared));
            } catch (IgniteCheckedException e) {
                throw new IgniteSQLException("Failed to execute DDL statement [stmt=" + sqlQry + ']', e);
            }
        }
        if (prepared instanceof NoOperation) {
            QueryCursorImpl<List<?>> resCur = (QueryCursorImpl<List<?>>) new QueryCursorImpl(Collections.singletonList(Collections.singletonList(0L)), null, false);
            resCur.fieldsMeta(UPDATE_RESULT_META);
            return Collections.singletonList(resCur);
        }
        throw new IgniteSQLException("Unsupported DDL/DML operation: " + prepared.getClass().getName());
    }
    if (twoStepQry != null) {
        if (log.isDebugEnabled())
            log.debug("Parsed query: `" + sqlQry + "` into two step query: " + twoStepQry);
        checkQueryType(qry, true);
        return Collections.singletonList(doRunDistributedQuery(schemaName, qry, twoStepQry, meta, keepBinary, cancel));
    }
    // We've encountered a local query, let's just run it.
    try {
        return Collections.singletonList(queryLocalSqlFields(schemaName, qry, keepBinary, filter, cancel));
    } catch (IgniteCheckedException e) {
        throw new IgniteSQLException("Failed to execute local statement [stmt=" + sqlQry + ", params=" + Arrays.deepToString(qry.getArgs()) + "]", e);
    }
}

Example 7 with Prepared

use of org.h2.test.db.Db.Prepared 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();
    }
}

Example 8 with Prepared

use of org.h2.test.db.Db.Prepared in project ignite by apache.

the class IgniteH2Indexing method querySqlFields.

/**
 * {@inheritDoc}
 */
@SuppressWarnings({ "StringEquality", "unchecked" })
@Override
public List<FieldsQueryCursor<List<?>>> querySqlFields(String schemaName, SqlFieldsQuery qry, @Nullable SqlClientContext cliCtx, boolean keepBinary, boolean failOnMultipleStmts, GridQueryCancel cancel) {
    List<FieldsQueryCursor<List<?>>> res = tryQueryDistributedSqlFieldsNative(schemaName, qry.getSql(), cliCtx);
    if (res != null)
        return res;
    {
        // First, let's check if we already have a two-step query for this statement...
        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();
            res = Collections.singletonList(doRunDistributedQuery(schemaName, qry, twoStepQry, meta, keepBinary, cancel));
            if (!twoStepQry.explain())
                twoStepCache.putIfAbsent(cachedQryKey, new H2TwoStepCachedQuery(meta, twoStepQry.copy()));
            return res;
        }
    }
    {
        // Second, let's check if we already have a parsed statement...
        PreparedStatement cachedStmt;
        if ((cachedStmt = cachedStatement(connectionForSchema(schemaName), qry.getSql())) != null) {
            Prepared prepared = GridSqlQueryParser.prepared(cachedStmt);
            // We may use this cached statement only for local queries and non queries.
            if (qry.isLocal() || !prepared.isQuery())
                return (List<FieldsQueryCursor<List<?>>>) doRunPrepared(schemaName, prepared, qry, null, null, keepBinary, cancel);
        }
    }
    res = new ArrayList<>(1);
    int firstArg = 0;
    String remainingSql = qry.getSql();
    while (remainingSql != null) {
        ParsingResult parseRes = parseAndSplit(schemaName, remainingSql != qry.getSql() ? cloneFieldsQuery(qry).setSql(remainingSql) : qry, firstArg);
        // Let's avoid second reflection getter call by returning Prepared object too
        Prepared prepared = parseRes.prepared();
        GridCacheTwoStepQuery twoStepQry = parseRes.twoStepQuery();
        List<GridQueryFieldMetadata> meta = parseRes.meta();
        SqlFieldsQuery newQry = parseRes.newQuery();
        remainingSql = parseRes.remainingSql();
        if (remainingSql != null && failOnMultipleStmts)
            throw new IgniteSQLException("Multiple statements queries are not supported");
        firstArg += prepared.getParameters().size();
        res.addAll(doRunPrepared(schemaName, prepared, newQry, twoStepQry, meta, keepBinary, cancel));
        if (parseRes.twoStepQuery() != null && parseRes.twoStepQueryKey() != null && !parseRes.twoStepQuery().explain())
            twoStepCache.putIfAbsent(parseRes.twoStepQueryKey(), new H2TwoStepCachedQuery(meta, twoStepQry.copy()));
    }
    return res;
}

Example 9 with Prepared

use of org.h2.test.db.Db.Prepared in project ignite by apache.

the class IgniteH2Indexing method queryLocalSqlFields.

/**
 * Queries individual fields (generally used by JDBC drivers).
 *
 * @param schemaName Schema name.
 * @param qry Query.
 * @param params Query parameters.
 * @param filter Cache name and key filter.
 * @param enforceJoinOrder Enforce join order of tables in the query.
 * @param timeout Query timeout in milliseconds.
 * @param cancel Query cancel.
 * @return Query result.
 * @throws IgniteCheckedException If failed.
 */
@SuppressWarnings("unchecked")
GridQueryFieldsResult queryLocalSqlFields(final String schemaName, final String qry, @Nullable final Collection<Object> params, final IndexingQueryFilter filter, boolean enforceJoinOrder, final int timeout, final GridQueryCancel cancel) throws IgniteCheckedException {
    final Connection conn = connectionForSchema(schemaName);
    H2Utils.setupConnection(conn, false, enforceJoinOrder);
    final PreparedStatement stmt = preparedStatementWithParams(conn, qry, params, true);
    if (GridSqlQueryParser.checkMultipleStatements(stmt))
        throw new IgniteSQLException("Multiple statements queries are not supported for local queries");
    Prepared p = GridSqlQueryParser.prepared(stmt);
    if (DmlStatementsProcessor.isDmlStatement(p)) {
        SqlFieldsQuery fldsQry = new SqlFieldsQuery(qry);
        if (params != null)
            fldsQry.setArgs(params.toArray());
        fldsQry.setEnforceJoinOrder(enforceJoinOrder);
        fldsQry.setTimeout(timeout, TimeUnit.MILLISECONDS);
        return dmlProc.updateSqlFieldsLocal(schemaName, conn, p, fldsQry, filter, cancel);
    } else if (DdlStatementsProcessor.isDdlStatement(p))
        throw new IgniteSQLException("DDL statements are supported for the whole cluster only", IgniteQueryErrorCode.UNSUPPORTED_OPERATION);
    List<GridQueryFieldMetadata> meta;
    try {
        meta = H2Utils.meta(stmt.getMetaData());
    } catch (SQLException e) {
        throw new IgniteCheckedException("Cannot prepare query metadata", e);
    }
    final GridH2QueryContext ctx = new GridH2QueryContext(nodeId, nodeId, 0, LOCAL).filter(filter).distributedJoinMode(OFF);
    return new GridQueryFieldsResultAdapter(meta, null) {

        @Override
        public GridCloseableIterator<List<?>> iterator() throws IgniteCheckedException {
            assert GridH2QueryContext.get() == null;
            GridH2QueryContext.set(ctx);
            GridRunningQueryInfo run = new GridRunningQueryInfo(qryIdGen.incrementAndGet(), qry, SQL_FIELDS, schemaName, U.currentTimeMillis(), cancel, true);
            runs.putIfAbsent(run.id(), run);
            try {
                ResultSet rs = executeSqlQueryWithTimer(stmt, conn, qry, params, timeout, cancel);
                return new H2FieldsIterator(rs);
            } finally {
                GridH2QueryContext.clearThreadLocal();
                runs.remove(run.id());
            }
        }
    };
}

Example 10 with Prepared

use of org.h2.test.db.Db.Prepared in project ignite by apache.

the class IgniteH2Indexing method streamBatchedUpdateQuery.

/**
 * {@inheritDoc}
 */
@SuppressWarnings("ForLoopReplaceableByForEach")
@Override
public List<Long> streamBatchedUpdateQuery(String schemaName, String qry, List<Object[]> params, SqlClientContext cliCtx) throws IgniteCheckedException {
    if (cliCtx == null || !cliCtx.isStream()) {
        U.warn(log, "Connection is not in streaming mode.");
        return zeroBatchedStreamedUpdateResult(params.size());
    }
    final Connection conn = connectionForSchema(schemaName);
    final PreparedStatement stmt = prepareStatementAndCaches(conn, qry);
    if (GridSqlQueryParser.checkMultipleStatements(stmt))
        throw new IgniteSQLException("Multiple statements queries are not supported for streaming mode.", IgniteQueryErrorCode.UNSUPPORTED_OPERATION);
    checkStatementStreamable(stmt);
    Prepared p = GridSqlQueryParser.prepared(stmt);
    UpdatePlan plan = dmlProc.getPlanForStatement(schemaName, conn, p, null, true, null);
    IgniteDataStreamer<?, ?> streamer = cliCtx.streamerForCache(plan.cacheContext().name());
    assert streamer != null;
    List<Long> res = new ArrayList<>(params.size());
    for (int i = 0; i < params.size(); i++) res.add(dmlProc.streamUpdateQuery(schemaName, streamer, stmt, params.get(i)));
    return res;
}