Examples of com.sleepycat.je.dbi.DatabaseImpl

com.sleepycat.je.dbi.DatabaseImpl
The underlying object for a given database.

            if (groupDbImpl != null) {
                throw EnvironmentFailureException.unexpectedState
                    ("GroupDb should not exist.");
            }


            DatabaseImpl newDbImpl = null;
            Txn txn = null;
            try {
                TransactionConfig txnConfig = new TransactionConfig();
                txnConfig.setDurability(new Durability(SyncPolicy.SYNC,
                                                       SyncPolicy.SYNC,

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        try {
            if (groupDbImpl != null) {
                return groupDbImpl;
            }


            DatabaseImpl newDbImpl = null;
            TransactionConfig txnConfig = new TransactionConfig();
            txnConfig.setConsistencyPolicy(policy);
            txn = new ReadonlyTxn(this, txnConfig);


            newDbImpl = getDbTree().getDb(txn,

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        final DbOpReplicationContext repContext =
            new DbOpReplicationContext(wireRecord.getVLSN(), nameLNEntry);


        DbOperationType opType = repContext.getDbOperationType();
        DatabaseImpl dbImpl = null;
        try {
            switch (opType) {
                case CREATE:
                {
                    DatabaseConfig dbConfig =
                        repContext.getCreateConfig().getReplicaConfig(repImpl);


                    dbImpl = repImpl.getDbTree().createReplicaDb
                      (repTxn, databaseName, dbConfig, nameLN, repContext);


                    /*
                     * We rely on the RepGroupDB.DB_ID value, so make sure
                     * it's what we expect for this internal replicated
                     * database.
                     */
                    if ((dbImpl.getId().getId() == RepGroupDB.DB_ID) &&
                        !DbType.REP_GROUP.getInternalName().equals
                        (databaseName)) {
                        throw EnvironmentFailureException.unexpectedState
                            ("Database: " +
                             DbType.REP_GROUP.getInternalName() +
                             " is associated with id: " +
                             dbImpl.getId().getId() +
                             " and not the reserved database id: " +
                             RepGroupDB.DB_ID);
                    }


                    TriggerManager.runOpenTriggers(repTxn, dbImpl, true);
                    break;
                }


                case REMOVE: {
                    dbImpl = repImpl.getDbTree().getDb(nameLN.getId());
                    try {
                        repImpl.getDbTree().removeReplicaDb
                            (repTxn, databaseName, nameLN.getId(), repContext);
                        TriggerManager.runRemoveTriggers(repTxn, dbImpl);
                    } catch (DatabaseNotFoundException e) {
                        throw EnvironmentFailureException.unexpectedState
                            ("Database: " + dbImpl.getName() +
                             " Id: " + nameLN.getId() +
                             " not found on the Replica.");
                    }
                    break;
                }


                case TRUNCATE: {
                    dbImpl = repImpl.getDbTree().getDb
                        (repContext.getTruncateOldDbId());
                    try {
                        TruncateDbResult result =
                        repImpl.getDbTree().truncateReplicaDb
                            (repTxn, databaseName, false, nameLN, repContext);
                        TriggerManager.runTruncateTriggers(repTxn, result.newDb);
                    } catch (DatabaseNotFoundException e) {
                        throw EnvironmentFailureException.unexpectedState
                            ("Database: " + dbImpl.getName() +
                             " Id: " + nameLN.getId() +
                             " not found on the Replica.");
                    }


                    break;
                }


                case RENAME: {
                    dbImpl = repImpl.getDbTree().getDb(nameLN.getId());
                    try {
                        dbImpl =
                        repImpl.getDbTree().renameReplicaDb
                            (repTxn, dbImpl.getName(), databaseName, nameLN,
                             repContext);
                        TriggerManager.runRenameTriggers(repTxn, dbImpl,
                                                         databaseName);
                    } catch (DatabaseNotFoundException e) {
                        throw EnvironmentFailureException.unexpectedState
                            ("Database rename from: " + dbImpl.getName() +
                             " to " + databaseName +
                             " failed, name not found on the Replica.");
                    }
                    break;
                }


                case UPDATE_CONFIG: {
                    /* Get the replicated database configurations. */
                    DatabaseConfig dbConfig =
                        repContext.getCreateConfig().getReplicaConfig(repImpl);


                    /* Update the NameLN and write it to the log. */
                    dbImpl = repImpl.getDbTree().getDb(nameLN.getId());
                    final String dbName = dbImpl.getName();
                    repImpl.getDbTree().updateNameLN
                        (repTxn, dbName, repContext);


                    /* Set the new configurations to DatabaseImpl. */
                    dbImpl.setConfigProperties
                        (repTxn, dbName, dbConfig, repImpl);


                    repImpl.getDbTree().modifyDbRoot(dbImpl);


                    break;

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         * Note that we don't have to worry about serializable isolation when
         * applying a replicated txn; serializable isolation in only an issue
         * for txns that take read locks, and a replicated txn consists only of
         * write operations.
         */
        final DatabaseImpl dbImpl =
            repImpl.getRepNode().getReplica().getDbCache().get(dbId, repTxn);
        lnEntry.postFetchInit(dbImpl);
        final ReplicationContext repContext =
            new ReplicationContext(wireRecord.getVLSN());
        final Cursor cursor = DbInternal.makeCursor(dbImpl, repTxn,

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     * later when latched), but an exception should not occur.
     */
    @Override
    boolean hasPinnedChildren() {


        DatabaseImpl db = getDatabase();


        /*
         * For the mapping DB, if any MapLN is resident we cannot evict this
         * BIN.  If a MapLN was not previously stripped, then the DB may be
         * open.  [#13415]
         */
        if (db.getId().equals(DbTree.ID_DB_ID)) {
            return hasResidentChildren();
        }


        /*
         * We can always evict this BIN because its children are limited to

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            throw EnvironmentFailureException.unexpectedState();
        }


        boolean setNewIdKey = false;
        boolean anyLocksDenied = false;
        final DatabaseImpl db = getDatabase();
        final EnvironmentImpl envImpl = db.getDbEnvironment();


        for (int i = 0; i < getNEntries(); i++) {


            /* KD and PD determine deletedness. */
            if (!isEntryPendingDeleted(i) && !isEntryKnownDeleted(i)) {
                continue;
            }


            /*
             * We have to be able to lock the LN before we can compress the
             * entry.  If we can't, then skip over it.
             *
             * We must lock the LN even if isKnownDeleted is true, because
             * locks protect the aborts. (Aborts may execute multiple
             * operations, where each operation latches and unlatches. It's the
             * LN lock that protects the integrity of the whole multi-step
             * process.)
             *
             * For example, during abort, there may be cases where we have
             * deleted and then added an LN during the same txn.  This means
             * that to undo/abort it, we first delete the LN (leaving
             * knownDeleted set), and then add it back into the tree.  We want
             * to make sure the entry is in the BIN when we do the insert back
             * in.
             */
            final BasicLocker lockingTxn =
                BasicLocker.createBasicLocker(envImpl);
            /* Don't allow this short-lived lock to be preempted/stolen. */
            lockingTxn.setPreemptable(false);
            try {
                /* Lock LSN.  Can discard a NULL_LSN entry without locking. */
                final long lsn = getLsn(i);
                if (lsn != DbLsn.NULL_LSN) {
                    final LockResult lockRet = lockingTxn.nonBlockingLock
                        (lsn, LockType.READ, false /*jumpAheadOfWaiters*/, db);
                    if (lockRet.getLockGrant() == LockGrantType.DENIED) {
                        anyLocksDenied = true;
                        continue;
                    }
                }


                /* At this point, we know we can delete. */
                if (Key.compareKeys(getKey(i), getIdentifierKey(),
                                    getKeyComparator()) == 0) {


                    /*
                     * We're about to remove the entry with the idKey so the
                     * node will need a new idkey.
                     */
                    setNewIdKey = true;
                    
                    /*
                     * We think identifier keys are always in the first slot.
                     * However, this assertion fails in DatabaseTest.  Needs
                     * futher investigation.
                     */
                    //assert (i == 0) : i;
                }


                if (db.isDeferredWriteMode()) {
                    final LN ln = (LN) getTarget(i);
                    if (ln != null &&
                        ln.isDirty() &&
                        !DbLsn.isTransient(lsn)) {
                        if (db.isTemporary()) {


                            /*
                             * When a previously logged LN in a temporary DB is
                             * dirty, we can count the LSN of the last logged
                             * LN as obsolete without logging.  There it no

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            for (Map.Entry<Long, LNInfo> entry : pendingLNs.entrySet()) {
                long originalLsn = entry.getKey();
                LNInfo info = entry.getValue();
                DatabaseId dbId = info.getDbId();
                DatabaseImpl db = dbMapTree.getDb(dbId, lockTimeout);
                try {
                    byte[] key = info.getKey();
                    LN ln = info.getLN();


                    /* Evict before processing each entry. */
                    if (DO_CRITICAL_EVICTION) {
                        env.daemonEviction(true /*backgroundIO*/);
                    }


                    processPendingLN(originalLsn, ln, db, key, location);
                } finally {
                    dbMapTree.releaseDb(db);
                }


                /* Sleep if background read/write limit was exceeded. */
                env.sleepAfterBackgroundIO();
            }
        }


        DatabaseId[] pendingDBs = fileSelector.getPendingDBs();
        if (pendingDBs != null) {
            for (DatabaseId dbId : pendingDBs) {
                DatabaseImpl db = dbMapTree.getDb(dbId, lockTimeout);
                try {
                    if (db == null || db.isDeleteFinished()) {
                        fileSelector.removePendingDB(dbId);
                    }
                } finally {
                    dbMapTree.releaseDb(db);
                }

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     * method.
     */
    public void lazyMigrateLNs(final BIN bin, final boolean backgroundIO)
        throws DatabaseException {


        DatabaseImpl db = bin.getDatabase();


        /*
         * For non-resident LNs, sort them by LSN before migrating them.
         * Fetching in LSN order reduces physical disk I/O.
         */

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        final long oldLsn = getLsn(index);
        final boolean force = ensureDurableLsn &&
                              getDatabase().isDeferredWriteMode() &&
                              DbLsn.isTransientOrNull(oldLsn);
        if (force || ln.isDirty()) {
            final DatabaseImpl dbImpl = getDatabase();
            final EnvironmentImpl envImpl = dbImpl.getDbEnvironment();


            /* Only deferred write databases should have dirty LNs. */
            assert dbImpl.isDeferredWriteMode();


            /*
             * Do not lock while logging.  Locking of new LSN is performed by
             * lockAfterLsnChange. This should never be part of the replication
             * stream, because this is a deferred-write DB.

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    @Override
    public void beforeLog(LogManager logManager,
                          INLogItem item,
                          INLogContext context) {


        final DatabaseImpl dbImpl = getDatabase();
        final EnvironmentImpl envImpl = dbImpl.getDbEnvironment();


        /* Allow the cleaner to migrate LNs before logging. */
        envImpl.getCleaner().lazyMigrateLNs(this, context.backgroundIO);


        /* Determine whether we log a delta rather than full version. */
        final boolean doDeltaLog;
        final BINDelta deltaInfo;
        if (context.allowDeltas && shouldLogDelta()) {
            doDeltaLog = true;
            deltaInfo = new BINDelta(this);
        } else {
            doDeltaLog = false;
            deltaInfo = null;
        }


        /* Perform lazy compression when logging a full BIN. */
        if (context.allowCompress && !doDeltaLog) {
            envImpl.lazyCompress(this);
        }


        /*
         * Write dirty LNs in deferred-write databases.  This is done after
         * compression to reduce total logging, at least for temp DBs.
         */
        if (dbImpl.isDeferredWriteMode()) {
            logDirtyLNs();
        }


        /*
         * In the Btree, the parent IN slot contains the latest full version

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