Examples of org.iq80.leveldb.Range

org.iq80.leveldb.table.Table
chirino.com">Hiram Chirino

            long previousLogNumber = versions.getPrevLogNumber();
            List<File> filenames = Filename.listFiles(databaseDir);


            List<Long> logs = Lists.newArrayList();
            for (File filename : filenames) {
                FileInfo fileInfo = Filename.parseFileName(filename);


                if (fileInfo != null &&
                        fileInfo.getFileType() == FileType.LOG &&
                        ((fileInfo.getFileNumber() >= minLogNumber) || (fileInfo.getFileNumber() == previousLogNumber))) {
                    logs.add(fileInfo.getFileNumber());
                }
            }


            // Recover in the order in which the logs were generated
            VersionEdit edit = new VersionEdit();

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        for (FileMetaData fileMetaData : versions.getLiveFiles()) {
            live.add(fileMetaData.getNumber());
        }


        for (File file : Filename.listFiles(databaseDir)) {
            FileInfo fileInfo = Filename.parseFileName(file);
            if (fileInfo == null)
              continue;
            long number = fileInfo.getFileNumber();
            boolean keep = true;
            switch (fileInfo.getFileType()) {
                case LOG:
                    keep = ((number >= versions.getLogNumber()) ||
                            (number == versions.getPrevLogNumber()));
                    break;
                case DESCRIPTOR:
                    // Keep my manifest file, and any newer incarnations'
                    // (in case there is a race that allows other incarnations)
                    keep = (number >= versions.getManifestFileNumber());
                    break;
                case TABLE:
                    keep = live.contains(number);
                    break;
                case TEMP:
                    // Any temp files that are currently being written to must
                    // be recorded in pending_outputs_, which is inserted into "live"
                    keep = live.contains(number);
                    break;
                case CURRENT:
                case DB_LOCK:
                case INFO_LOG:
                    keep = true;
                    break;
            }


            if (!keep) {
                if (fileInfo.getFileType() == FileType.TABLE) {
                    tableCache.evict(number);
                }
                // todo info logging system needed
//                Log(options_.info_log, "Delete type=%d #%lld\n",
//                int(type),

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    DbIterator internalIterator()
    {
        mutex.lock();
        try {
            // merge together the memTable, immutableMemTable, and tables in version set
            MemTableIterator iterator = null;
            if (immutableMemTable != null) {
                iterator = immutableMemTable.iterator();
            }
            Version current = versions.getCurrent();
            return new DbIterator(memTable.iterator(), iterator, current.getLevel0Files(), current.getLevelIterators(), internalKeyComparator);

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    {
        Slice record = Slices.allocate(SIZE_OF_LONG + SIZE_OF_INT + updates.getApproximateSize());
        final SliceOutput sliceOutput = record.output();
        sliceOutput.writeLong(sequenceBegin);
        sliceOutput.writeInt(updates.size());
        updates.forEach(new Handler()
        {
            @Override
            public void put(Slice key, Slice value)
            {
                sliceOutput.writeByte(VALUE.getPersistentId());

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    }


    private BlockIterator getNextBlock()
    {
        Slice blockHandle = blockIterator.next().getValue();
        Block dataBlock = table.openBlock(blockHandle);
        return dataBlock.iterator();
    }

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        DBComparator comparator = options.comparator();
        UserComparator userComparator;
        if (comparator != null) {
            userComparator = new CustomUserComparator(comparator);
        }else{
            userComparator = new BytewiseComparator();
        }
        internalKeyComparator = new InternalKeyComparator(userComparator);
        memTable = new MemTable(internalKeyComparator);
        immutableMemTable = null;

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        //use custom comparator if set
        DBComparator comparator = options.comparator();
        UserComparator userComparator;
        if (comparator != null) {
            userComparator = new CustomUserComparator(comparator);
        }else{
            userComparator = new BytewiseComparator();
        }
        internalKeyComparator = new InternalKeyComparator(userComparator);
        memTable = new MemTable(internalKeyComparator);

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            fileChannel = new FileInputStream(tableFile).getChannel();
            try {
                if( Iq80DBFactory.USE_MMAP ) {
                    table = new MMapTable(tableFile.getAbsolutePath(), fileChannel, userComparator, verifyChecksums);
                } else {
                    table = new FileChannelTable(tableFile.getAbsolutePath(), fileChannel, userComparator, verifyChecksums);
                }
            }
            catch (IOException e) {
                Closeables.closeQuietly(fileChannel);
                throw e;

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            String tableFileName = Filename.tableFileName(fileNumber);
            File tableFile = new File(databaseDir, tableFileName);
            fileChannel = new FileInputStream(tableFile).getChannel();
            try {
                if( Iq80DBFactory.USE_MMAP ) {
                    table = new MMapTable(tableFile.getAbsolutePath(), fileChannel, userComparator, verifyChecksums);
                } else {
                    table = new FileChannelTable(tableFile.getAbsolutePath(), fileChannel, userComparator, verifyChecksums);
                }
            }
            catch (IOException e) {

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        cache = CacheBuilder.newBuilder()
                .maximumSize(tableCacheSize)
                .removalListener(new RemovalListener<Long, TableAndFile>() {
                    public void onRemoval(RemovalNotification<Long, TableAndFile> notification) {
                        Table table = notification.getValue().getTable();
                        finalizer.addCleanup(table, table.closer());
                    }
                })
                .build(new CacheLoader<Long, TableAndFile>() {
                    public TableAndFile load(Long fileNumber)
                            throws IOException {

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