Examples with Transaction org.h2.mvstore.db.TransactionStore.Transaction used on opensource projects

Example 16 with Transaction

use of org.h2.mvstore.db.TransactionStore.Transaction in project h2database by h2database.

the class Server method startWebServer.

/**
 * Start a web server and a browser that uses the given connection. The
 * current transaction is preserved. This is specially useful to manually
 * inspect the database when debugging. This method return as soon as the
 * user has disconnected.
 *
 * @param conn the database connection (the database must be open)
 * @param ignoreProperties if {@code true} properties from
 *         {@code .h2.server.properties} will be ignored
 */
public static void startWebServer(Connection conn, boolean ignoreProperties) throws SQLException {
    WebServer webServer = new WebServer();
    String[] args;
    if (ignoreProperties) {
        args = new String[] { "-webPort", "0", "-properties", "null" };
    } else {
        args = new String[] { "-webPort", "0" };
    }
    Server web = new Server(webServer, args);
    web.start();
    Server server = new Server();
    server.web = web;
    webServer.setShutdownHandler(server);
    String url = webServer.addSession(conn);
    try {
        Server.openBrowser(url);
        while (!webServer.isStopped()) {
            Thread.sleep(1000);
        }
    } catch (Exception e) {
    // ignore
    }
}

Example 17 with Transaction

use of org.h2.mvstore.db.TransactionStore.Transaction in project h2database by h2database.

the class TestLob method testRemovedAfterTimeout.

private void testRemovedAfterTimeout() throws Exception {
    if (config.lazy) {
        return;
    }
    deleteDb("lob");
    final String url = getURL("lob;lob_timeout=50", true);
    Connection conn = getConnection(url);
    Statement stat = conn.createStatement();
    stat.execute("create table test(id int primary key, data clob)");
    PreparedStatement prep = conn.prepareStatement("insert into test values(?, ?)");
    prep.setInt(1, 1);
    prep.setString(2, "aaa" + new String(new char[1024 * 16]).replace((char) 0, 'x'));
    prep.execute();
    prep.setInt(1, 2);
    prep.setString(2, "bbb" + new String(new char[1024 * 16]).replace((char) 0, 'x'));
    prep.execute();
    ResultSet rs = stat.executeQuery("select * from test order by id");
    rs.next();
    Clob c1 = rs.getClob(2);
    assertEquals("aaa", c1.getSubString(1, 3));
    rs.next();
    assertEquals("aaa", c1.getSubString(1, 3));
    rs.close();
    assertEquals("aaa", c1.getSubString(1, 3));
    stat.execute("delete from test");
    c1.getSubString(1, 3);
    // wait until it times out
    Thread.sleep(100);
    // start a new transaction, to be sure
    stat.execute("delete from test");
    assertThrows(SQLException.class, c1).getSubString(1, 3);
    conn.close();
}

Example 18 with Transaction

use of org.h2.mvstore.db.TransactionStore.Transaction in project narayana by jbosstm.

the class TestCommitMarkableResourceReturnUnknownOutcomeFrom1PCCommit method testRMFAILAfterCommit.

@Test
public void testRMFAILAfterCommit() throws Exception {
    jtaPropertyManager.getJTAEnvironmentBean().setNotifyCommitMarkableResourceRecoveryModuleOfCompleteBranches(false);
    final JdbcDataSource dataSource = new JdbcDataSource();
    dataSource.setURL("jdbc:h2:mem:JBTMDB;MVCC=TRUE;DB_CLOSE_DELAY=-1");
    // Test code
    Utils.createTables(dataSource.getConnection());
    // We can't just instantiate one as we need to be using the
    // same one as
    // the transaction
    // manager would have used to mark the transaction for GC
    CommitMarkableResourceRecordRecoveryModule commitMarkableResourceRecoveryModule = null;
    Vector recoveryModules = manager.getModules();
    if (recoveryModules != null) {
        Enumeration modules = recoveryModules.elements();
        while (modules.hasMoreElements()) {
            RecoveryModule m = (RecoveryModule) modules.nextElement();
            if (m instanceof CommitMarkableResourceRecordRecoveryModule) {
                commitMarkableResourceRecoveryModule = (CommitMarkableResourceRecordRecoveryModule) m;
            } else if (m instanceof XARecoveryModule) {
                XARecoveryModule xarm = (XARecoveryModule) m;
                xarm.addXAResourceRecoveryHelper(new XAResourceRecoveryHelper() {

                    public boolean initialise(String p) throws Exception {
                        return true;
                    }

                    public XAResource[] getXAResources() throws Exception {
                        return new XAResource[] { xaResource };
                    }
                });
            }
        }
    }
    javax.transaction.TransactionManager tm = com.arjuna.ats.jta.TransactionManager.transactionManager();
    tm.begin();
    Uid get_uid = ((TransactionImple) tm.getTransaction()).get_uid();
    Connection localJDBCConnection = dataSource.getConnection();
    localJDBCConnection.setAutoCommit(false);
    nonXAResource = new JDBCConnectableResource(localJDBCConnection) {

        @Override
        public void commit(Xid arg0, boolean arg1) throws XAException {
            super.commit(arg0, arg1);
            throw new XAException(XAException.XAER_RMFAIL);
        }
    };
    tm.getTransaction().enlistResource(nonXAResource);
    xaResource = new SimpleXAResource();
    tm.getTransaction().enlistResource(xaResource);
    localJDBCConnection.createStatement().execute("INSERT INTO foo (bar) VALUES (1)");
    tm.commit();
    assertTrue(xaResource.wasCommitted());
    Xid committed = ((JDBCConnectableResource) nonXAResource).getStartedXid();
    assertNotNull(committed);
    InputObjectState uids = new InputObjectState();
    StoreManager.getRecoveryStore().allObjUids(new AtomicAction().type(), uids);
    Uid uid = UidHelper.unpackFrom(uids);
    assertTrue(uid.equals(get_uid));
    // Belt and braces but we don't expect the CMR to be removed anyway as
    // the RM is "offline"
    manager.scan();
    manager.scan();
    // The recovery module has to perform lookups
    new InitialContext().rebind("commitmarkableresource", dataSource);
    assertTrue(commitMarkableResourceRecoveryModule.wasCommitted("commitmarkableresource", committed));
    // This will complete the atomicaction
    manager.scan();
    StoreManager.getRecoveryStore().allObjUids(new AtomicAction().type(), uids);
    uid = UidHelper.unpackFrom(uids);
    assertTrue(uid.equals(Uid.nullUid()));
    // This is when the CMR deletes are done due to ordering
    manager.scan();
    // of the recovery modules
    assertFalse(commitMarkableResourceRecoveryModule.wasCommitted("commitmarkableresource", committed));
}

Example 19 with Transaction

use of org.h2.mvstore.db.TransactionStore.Transaction in project ignite by apache.

the class GridReduceQueryExecutor method query.

/**
 * @param schemaName Schema name.
 * @param qry Query.
 * @param keepBinary Keep binary.
 * @param enforceJoinOrder Enforce join order of tables.
 * @param timeoutMillis Timeout in milliseconds.
 * @param cancel Query cancel.
 * @param params Query parameters.
 * @param parts Partitions.
 * @param lazy Lazy execution flag.
 * @return Rows iterator.
 */
public Iterator<List<?>> query(String schemaName, final GridCacheTwoStepQuery qry, boolean keepBinary, boolean enforceJoinOrder, int timeoutMillis, GridQueryCancel cancel, Object[] params, final int[] parts, boolean lazy) {
    if (F.isEmpty(params))
        params = EMPTY_PARAMS;
    final boolean isReplicatedOnly = qry.isReplicatedOnly();
    // Fail if all caches are replicated and explicit partitions are set.
    for (int attempt = 0; ; attempt++) {
        if (attempt != 0) {
            try {
                // Wait for exchange.
                Thread.sleep(attempt * 10);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
                throw new CacheException("Query was interrupted.", e);
            }
        }
        final long qryReqId = qryIdGen.incrementAndGet();
        final ReduceQueryRun r = new ReduceQueryRun(qryReqId, qry.originalSql(), schemaName, h2.connectionForSchema(schemaName), qry.mapQueries().size(), qry.pageSize(), U.currentTimeMillis(), cancel);
        AffinityTopologyVersion topVer = h2.readyTopologyVersion();
        // Check if topology is changed while retrying on locked topology.
        if (h2.serverTopologyChanged(topVer) && ctx.cache().context().lockedTopologyVersion(null) != null) {
            throw new CacheException(new TransactionException("Server topology is changed during query " + "execution inside a transaction. It's recommended to rollback and retry transaction."));
        }
        List<Integer> cacheIds = qry.cacheIds();
        Collection<ClusterNode> nodes;
        // Explicit partition mapping for unstable topology.
        Map<ClusterNode, IntArray> partsMap = null;
        // Explicit partitions mapping for query.
        Map<ClusterNode, IntArray> qryMap = null;
        // Partitions are not supported for queries over all replicated caches.
        if (parts != null) {
            boolean replicatedOnly = true;
            for (Integer cacheId : cacheIds) {
                if (!cacheContext(cacheId).isReplicated()) {
                    replicatedOnly = false;
                    break;
                }
            }
            if (replicatedOnly)
                throw new CacheException("Partitions are not supported for replicated caches");
        }
        if (qry.isLocal())
            nodes = singletonList(ctx.discovery().localNode());
        else {
            NodesForPartitionsResult nodesParts = nodesForPartitions(cacheIds, topVer, parts, isReplicatedOnly);
            nodes = nodesParts.nodes();
            partsMap = nodesParts.partitionsMap();
            qryMap = nodesParts.queryPartitionsMap();
            if (nodes == null)
                // Retry.
                continue;
            assert !nodes.isEmpty();
            if (isReplicatedOnly || qry.explain()) {
                ClusterNode locNode = ctx.discovery().localNode();
                // Always prefer local node if possible.
                if (nodes.contains(locNode))
                    nodes = singletonList(locNode);
                else {
                    // Select random data node to run query on a replicated data or
                    // get EXPLAIN PLAN from a single node.
                    nodes = singletonList(F.rand(nodes));
                }
            }
        }
        int tblIdx = 0;
        final boolean skipMergeTbl = !qry.explain() && qry.skipMergeTable();
        final int segmentsPerIndex = qry.explain() || isReplicatedOnly ? 1 : findFirstPartitioned(cacheIds).config().getQueryParallelism();
        int replicatedQrysCnt = 0;
        final Collection<ClusterNode> finalNodes = nodes;
        for (GridCacheSqlQuery mapQry : qry.mapQueries()) {
            GridMergeIndex idx;
            if (!skipMergeTbl) {
                GridMergeTable tbl;
                try {
                    tbl = createMergeTable(r.connection(), mapQry, qry.explain());
                } catch (IgniteCheckedException e) {
                    throw new IgniteException(e);
                }
                idx = tbl.getMergeIndex();
                fakeTable(r.connection(), tblIdx++).innerTable(tbl);
            } else
                idx = GridMergeIndexUnsorted.createDummy(ctx);
            // If the query has only replicated tables, we have to run it on a single node only.
            if (!mapQry.isPartitioned()) {
                ClusterNode node = F.rand(nodes);
                mapQry.node(node.id());
                replicatedQrysCnt++;
                // Replicated tables can have only 1 segment.
                idx.setSources(singletonList(node), 1);
            } else
                idx.setSources(nodes, segmentsPerIndex);
            idx.setPageSize(r.pageSize());
            r.indexes().add(idx);
        }
        r.latch(new CountDownLatch(isReplicatedOnly ? 1 : (r.indexes().size() - replicatedQrysCnt) * nodes.size() * segmentsPerIndex + replicatedQrysCnt));
        runs.put(qryReqId, r);
        boolean release = true;
        try {
            cancel.checkCancelled();
            if (ctx.clientDisconnected()) {
                throw new CacheException("Query was cancelled, client node disconnected.", new IgniteClientDisconnectedException(ctx.cluster().clientReconnectFuture(), "Client node disconnected."));
            }
            List<GridCacheSqlQuery> mapQrys = qry.mapQueries();
            if (qry.explain()) {
                mapQrys = new ArrayList<>(qry.mapQueries().size());
                for (GridCacheSqlQuery mapQry : qry.mapQueries()) mapQrys.add(new GridCacheSqlQuery("EXPLAIN " + mapQry.query()).parameterIndexes(mapQry.parameterIndexes()));
            }
            final boolean distributedJoins = qry.distributedJoins();
            cancel.set(new Runnable() {

                @Override
                public void run() {
                    send(finalNodes, new GridQueryCancelRequest(qryReqId), null, false);
                }
            });
            boolean retry = false;
            // Always enforce join order on map side to have consistent behavior.
            int flags = GridH2QueryRequest.FLAG_ENFORCE_JOIN_ORDER;
            if (distributedJoins)
                flags |= GridH2QueryRequest.FLAG_DISTRIBUTED_JOINS;
            if (qry.isLocal())
                flags |= GridH2QueryRequest.FLAG_IS_LOCAL;
            if (qry.explain())
                flags |= GridH2QueryRequest.FLAG_EXPLAIN;
            if (isReplicatedOnly)
                flags |= GridH2QueryRequest.FLAG_REPLICATED;
            if (lazy && mapQrys.size() == 1)
                flags |= GridH2QueryRequest.FLAG_LAZY;
            GridH2QueryRequest req = new GridH2QueryRequest().requestId(qryReqId).topologyVersion(topVer).pageSize(r.pageSize()).caches(qry.cacheIds()).tables(distributedJoins ? qry.tables() : null).partitions(convert(partsMap)).queries(mapQrys).parameters(params).flags(flags).timeout(timeoutMillis).schemaName(schemaName);
            if (send(nodes, req, parts == null ? null : new ExplicitPartitionsSpecializer(qryMap), false)) {
                awaitAllReplies(r, nodes, cancel);
                Object state = r.state();
                if (state != null) {
                    if (state instanceof CacheException) {
                        CacheException err = (CacheException) state;
                        if (err.getCause() instanceof IgniteClientDisconnectedException)
                            throw err;
                        if (wasCancelled(err))
                            // Throw correct exception.
                            throw new QueryCancelledException();
                        throw new CacheException("Failed to run map query remotely." + err.getMessage(), err);
                    }
                    if (state instanceof AffinityTopologyVersion) {
                        retry = true;
                        // If remote node asks us to retry then we have outdated full partition map.
                        h2.awaitForReadyTopologyVersion((AffinityTopologyVersion) state);
                    }
                }
            } else
                // Send failed.
                retry = true;
            Iterator<List<?>> resIter = null;
            if (!retry) {
                if (skipMergeTbl) {
                    resIter = new GridMergeIndexIterator(this, finalNodes, r, qryReqId, qry.distributedJoins());
                    release = false;
                } else {
                    cancel.checkCancelled();
                    UUID locNodeId = ctx.localNodeId();
                    H2Utils.setupConnection(r.connection(), false, enforceJoinOrder);
                    GridH2QueryContext.set(new GridH2QueryContext(locNodeId, locNodeId, qryReqId, REDUCE).pageSize(r.pageSize()).distributedJoinMode(OFF));
                    try {
                        if (qry.explain())
                            return explainPlan(r.connection(), qry, params);
                        GridCacheSqlQuery rdc = qry.reduceQuery();
                        ResultSet res = h2.executeSqlQueryWithTimer(r.connection(), rdc.query(), F.asList(rdc.parameters(params)), // The statement will cache some extra thread local objects.
                        false, timeoutMillis, cancel);
                        resIter = new H2FieldsIterator(res);
                    } finally {
                        GridH2QueryContext.clearThreadLocal();
                    }
                }
            }
            if (retry) {
                if (Thread.currentThread().isInterrupted())
                    throw new IgniteInterruptedCheckedException("Query was interrupted.");
                continue;
            }
            return new GridQueryCacheObjectsIterator(resIter, h2.objectContext(), keepBinary);
        } catch (IgniteCheckedException | RuntimeException e) {
            release = true;
            U.closeQuiet(r.connection());
            if (e instanceof CacheException) {
                if (wasCancelled((CacheException) e))
                    throw new CacheException("Failed to run reduce query locally.", new QueryCancelledException());
                throw (CacheException) e;
            }
            Throwable cause = e;
            if (e instanceof IgniteCheckedException) {
                Throwable disconnectedErr = ((IgniteCheckedException) e).getCause(IgniteClientDisconnectedException.class);
                if (disconnectedErr != null)
                    cause = disconnectedErr;
            }
            throw new CacheException("Failed to run reduce query locally.", cause);
        } finally {
            if (release) {
                releaseRemoteResources(finalNodes, r, qryReqId, qry.distributedJoins());
                if (!skipMergeTbl) {
                    for (int i = 0, mapQrys = qry.mapQueries().size(); i < mapQrys; i++) // Drop all merge tables.
                    fakeTable(null, i).innerTable(null);
                }
            }
        }
    }
}

Example 20 with Transaction

use of org.h2.mvstore.db.TransactionStore.Transaction in project h2database by h2database.

the class Session method setPreparedTransaction.

/**
 * Commit or roll back the given transaction.
 *
 * @param transactionName the name of the transaction
 * @param commit true for commit, false for rollback
 */
public void setPreparedTransaction(String transactionName, boolean commit) {
    if (currentTransactionName != null && currentTransactionName.equals(transactionName)) {
        if (commit) {
            commit(false);
        } else {
            rollback();
        }
    } else {
        ArrayList<InDoubtTransaction> list = database.getInDoubtTransactions();
        int state = commit ? InDoubtTransaction.COMMIT : InDoubtTransaction.ROLLBACK;
        boolean found = false;
        if (list != null) {
            for (InDoubtTransaction p : list) {
                if (p.getTransactionName().equals(transactionName)) {
                    p.setState(state);
                    found = true;
                    break;
                }
            }
        }
        if (!found) {
            throw DbException.get(ErrorCode.TRANSACTION_NOT_FOUND_1, transactionName);
        }
    }
}