Examples of com.sleepycat.je.rep.stream.FeederReader$SwitchWindow

com.sleepycat.je.rep.stream.FeederReader
The SwitchWindow can fill itself from either the log file or the log buffers.

            }


            int readBufferSize =
                envImpl.getConfigManager().getInt
                (EnvironmentParams.LOG_ITERATOR_READ_SIZE);
            FeederReader feederReader = null;
            FeederSyncupReader backwardsReader = null;


            VLSN scanVLSN = startVLSN;
            if (startVLSN.equals(VLSN.NULL_VLSN)) {
                RepImpl repImpl = RepInternal.getRepImpl(rep);
                VLSNRange range = repImpl.getVLSNIndex().getRange();
                if (forward) {
                    scanVLSN = range.getFirst();
                } else {
                    scanVLSN = range.getLast();
                }
            }
            if (scanVLSN.equals(VLSN.NULL_VLSN)) {
                /* Give up, no VLSN entries in the index. */
                System.out.println("<DbPrintLog>");
                System.out.println("</DbPrintLog>");
                return;
            }


            if (forward) {
                feederReader = new FeederReader(envImpl, vlsnIndex, startLsn,
                                                readBufferSize,
                                                new NameIdPair("n0", 0));
                feederReader.initScan(scanVLSN);
            } else {
                backwardsReader = new FeederSyncupReader
                    (envImpl, vlsnIndex,
                     startLsn, readBufferSize,
                     new NameIdPair("n0", 0),
                     scanVLSN,
                     DbLsn.NULL_LSN);
            }


            OutputWireRecord record = null;
            System.out.println("<DbPrintLog>");
            long lastLsn = 0;
            do  {
                if (forward) {
                    record = feederReader.scanForwards(scanVLSN, 0);
                    scanVLSN = scanVLSN.getNext();
                    lastLsn = feederReader.getLastLsn();
                } else {
                    record = backwardsReader.scanBackwards(scanVLSN);
                    scanVLSN = scanVLSN.getPrev();
                    lastLsn = backwardsReader.getLastLsn();
                }

View Full Code Here

    public long getLsnForVLSN(VLSN vlsn, int readBufferSize) {
        /* Returns the file number which is nearest to the vlsn. */
        long fileNumber = vlsnIndex.getLTEFileNumber(vlsn);


        /* Start reading from the nearest file. */
        FeederReader feederReader =
            new FeederReader(this,
                             vlsnIndex,
                             DbLsn.makeLsn(fileNumber, 0),
                             readBufferSize,
                             nameIdPair);


        try {
            feederReader.initScan(vlsn);


            /*
             * Go on scan the log until FeederReader find the target VLSN,
             * thrown out an EnvironmentFailureException if it can't be found.
             */
            if (!feederReader.readNextEntry()) {
                throw EnvironmentFailureException.unexpectedState
                    ("VLSN not found: " + vlsn);
            }
        } catch (IOException e) {
            throw EnvironmentFailureException.unexpectedException(e);
        }


        return feederReader.getLastLsn();
    }

View Full Code Here

            }


            int readBufferSize =
                envImpl.getConfigManager().getInt
                (EnvironmentParams.LOG_ITERATOR_READ_SIZE);
            FeederReader feederReader = null;
            FeederSyncupReader backwardsReader = null;


            VLSN scanVLSN = startVLSN;
            if (startVLSN.equals(VLSN.NULL_VLSN)) {
                RepImpl repImpl = RepInternal.getRepImpl(rep);
                VLSNRange range = repImpl.getVLSNIndex().getRange();
                if (forward) {
                    scanVLSN = range.getFirst();
                } else {
                    scanVLSN = range.getLast();
                }
            }
            if (scanVLSN.equals(VLSN.NULL_VLSN)) {
                /* Give up, no VLSN entries in the index. */
                System.out.println("<DbPrintLog>");
                System.out.println("</DbPrintLog>");
                return;
            }


            if (forward) {
                feederReader = new FeederReader(envImpl, vlsnIndex, startLsn,
                                                readBufferSize,
                                                new NameIdPair("n0", 0));
                feederReader.initScan(scanVLSN);
            } else {
                backwardsReader = new FeederSyncupReader
                    (envImpl, vlsnIndex,
                     startLsn, readBufferSize,
                     new NameIdPair("n0", 0),
                     scanVLSN,
                     DbLsn.NULL_LSN);
            }


            OutputWireRecord record = null;
            System.out.println("<DbPrintLog>");
            long lastLsn = 0;
            do  {
                if (forward) {
                    record = feederReader.scanForwards(scanVLSN, 0);
                    scanVLSN = scanVLSN.getNext();
                    lastLsn = feederReader.getLastLsn();
                } else {
                    record = backwardsReader.scanBackwards(scanVLSN);
                    scanVLSN = scanVLSN.getPrev();
                    lastLsn = backwardsReader.getLastLsn();
                }

View Full Code Here

TOP

Related Classes of com.sleepycat.je.rep.stream.FeederReader$SwitchWindow

com.sleepycat.je.log.FileHandle

com.sleepycat.je.log.LogBuffer

com.sleepycat.je.log.LogItem

com.sleepycat.je.rep.impl.node.NameIdPair

com.sleepycat.je.rep.impl.RepImpl

com.sleepycat.je.rep.utilint.DbFeederPrintLog

com.sleepycat.je.rep.vlsn.VLSNIndex.ForwardVLSNScanner

com.sleepycat.je.rep.vlsn.VLSNRange

com.sleepycat.je.utilint.VLSN

java.nio.ByteBuffer

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.