Examples of com.sleepycat.je.tree.LN

com.sleepycat.je.tree.LN
An LN represents a Leaf Node in the JE tree.

                    found = !exactSearch;
                }
            }
        } else {
            /* Not a duplicate, but checking for both key and data match. */
            LN ln = (LN) n;


            /* Lock LN, check if deleted. */
            LockResult lockResult = lockLN(ln, lockType);


            /*
             * Note that during the lockLN call, this cursor may have been
             * adjusted to refer to an LN in a duplicate tree.  This happens in
             * the case where we entered with a non-duplicate tree LN and
             * during the lock call it was mutated to a duplicate tree.  The LN
             * is still the correct LN, but our cursor is now down in a
             * duplicate tree. [#14230].
             */


            ln = lockResult.getLN();


            if (ln == null) {
                found = !exactSearch;
            } else {


                /* Don't set abort LSN for read operation. [#13158] */


                /*
                 * The comparison logic below mimics IN.findEntry as used above
                 * for duplicates.
                 */
                int cmp = Key.compareKeys
                    (ln.getData(), data, databaseImpl.getDuplicateComparator());
                if (cmp == 0 || (cmp <= 0 && !exactSearch)) {
                    if (cmp == 0) {
                        exact = true;
                    }
                    found = true;

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            } else {
                return OperationStatus.NOTFOUND;
            }
        }


        LN ln = (LN) n;


        assert TestHookExecute.doHookIfSet(testHook);


        /*
         * Lock the LN.  For dirty-read, the data of the LN can be set to null
         * at any time.  Cache the data in a local variable so its state does
         * not change before calling setDbt further below.
         */
        LockResult lockResult = lockLN(ln, lockType);
        try {
            ln = lockResult.getLN();
            byte[] lnData = (ln != null) ? ln.getData() : null;
            if (ln == null || lnData == null) {
                if (treeStatsAccumulator != null) {
                    treeStatsAccumulator.incrementDeletedLNCount();
                }
                return OperationStatus.KEYEMPTY;

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                if (in.isEntryPendingDeleted(i) ||
                    in.isEntryKnownDeleted(i)) {


                    /* Dirty LNs (deferred write) get special treatment. */
                    if (node instanceof LN) {
                        LN ln = (LN) node;
                        if (ln.isDirty()) {
                            callback.processDirtyDeletedLN
                                (lsn, ln, in.getKey(i));
                        }
                    }
                    continue;

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        throws DatabaseException {


        /* Invoke the evictor to reduce memory consumption. */
        envImpl.invokeEvictor();


        LN ln = reader.getLN();
        TreeLocation location = new TreeLocation();
        long logLsn = reader.getLastLsn();
        long abortLsn = reader.getAbortLsn();
        boolean abortKnownDeleted = reader.getAbortKnownDeleted();
        DatabaseId dbId = reader.getDatabaseId();
        DatabaseImpl db = dbMapTree.getDb(dbId);


        try {
            /* Database may be null if it's been deleted. */
            if (db == null) {
                return;
            }


            ln.postFetchInit(db, logLsn);
            recoveryUndo(db, location, ln, reader.getKey(),
                         reader.getDupTreeKey(), logLsn, abortLsn,
                         abortKnownDeleted);


            /* Undo utilization info. */

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                 * We're doing a redo. Invoke the evictor in this loop to
                 * reduce memory consumption.
                 */
                envImpl.invokeEvictor();


                LN ln = reader.getLN();
                DatabaseId dbId = reader.getDatabaseId();
                DatabaseImpl db = dbMapTree.getDb(dbId);
                try {
                    long logLsn = reader.getLastLsn();
                    long treeLsn = DbLsn.NULL_LSN;

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                /*
                 * Read the LN that's in this slot to check for deleted
                 * status.  No need to lock, since this is recovery.  If
                 * fetchTarget returns null, a deleted LN was cleaned.
                 */
                LN currentLN = (LN) parentBIN.fetchTarget(entryIndex);


                if (currentLN == null || currentLN.isDeleted()) {
                    canOverwrite = true;
                }


                /*
                 * Evict the target again manually, to reduce memory

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    public int fetchLNSize(int size, long lsn)
        throws DatabaseException {


        if (size == 0 && env.getCleaner().getFetchObsoleteSize()) {
            try {
                LN ln = (LN) env.getLogManager().getEntry(lsn);
                size = ln.getLastLoggedSize();
            } catch (FileNotFoundException e) {
                /* Ignore errors if the file was cleaned. */
            }
        }
        return size;

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        @Override
        protected void display() {
            DatabaseEntry key = new DatabaseEntry(targetEntry.getKey());
            long keyVal = LongBinding.entryToLong(key);
            LN ln = targetEntry.getLN();
            if (ln.isDeleted()) {
                outStream.print("<deleted>");
            } else {
                DatabaseEntry data = new DatabaseEntry(ln.getData());


                if (keyVal == VLSNRange.RANGE_KEY) {
                    outStream.print(" range: ");
                    VLSNRange range = VLSNRange.readFromDatabase(data);
                    outStream.println(range);

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        protected void display() {
            out.print(" VLSN=" + currentEntryHeader.getVLSN());


            DatabaseEntry key = new DatabaseEntry(targetEntry.getKey());


            LN ln = targetEntry.getLN();
            if (ln.isDeleted()) {
                outStream.print("<deleted>");
            } else {
                DatabaseEntry data = new DatabaseEntry(ln.getData());
                String keyVal = StringBinding.entryToString(key);
                TupleBinding<?> binding = null;
                if (keyVal.equals(RepGroupDB.GROUP_KEY)) {
                    outStream.print(" GroupInfo: ");
                    binding = new GroupBinding();

View Full Code Here

        Locker idDbLocker = null;
        try {
            newDb = new DatabaseImpl(databaseName, newId, envImpl, dbConfig);
            /* Insert it into name -> id db. */
            nameCursor = new CursorImpl(nameDatabase, nameLocker);
            LN nameLN = null;
            if (replicatedLN != null) {
                nameLN = replicatedLN;
            } else {
                nameLN = new NameLN(newId, envImpl, newDb.isReplicated());
            }


            ReplicationContext useRepContext = repContext;
            if (repContext == null) {
                useRepContext = newDb.getOperationRepContext(CREATE);
            }
            nameCursor.putLN(databaseName.getBytes("UTF-8"),// key
                             nameLN,
                             null,                          // returnNewData
                             false,                         // allowDuplicates
                             useRepContext);


            /*
             * If this is a non-handle use, no need to record any handle locks.
             */
            if (databaseHandle != null) {
                nameLocker.addToHandleMaps(Long.valueOf(nameLN.getNodeId()),
                                           databaseHandle);
            }


            /* Insert it into id -> name db, in auto commit mode. */
            idDbLocker = BasicLocker.createBasicLocker(envImpl);

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Related Classes of com.sleepycat.je.tree.LN

com.sleepycat.je.cleaner.Cleaner

com.sleepycat.je.cleaner.FileProcessor

com.sleepycat.je.cleaner.RecoveryUtilizationTracker

com.sleepycat.je.Cursor

com.sleepycat.je.dbi.CursorImpl

com.sleepycat.je.dbi.DatabaseId

com.sleepycat.je.dbi.DatabaseImpl$ObsoleteProcessor

com.sleepycat.je.dbi.DbTree

com.sleepycat.je.dbi.DiskOrderedCursorImpl$DiskOrderedScanProcessor

com.sleepycat.je.dbi.EnvironmentImpl

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