Package org.iq80.leveldb

Examples of org.iq80.leveldb.WriteBatch

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    {
        Preconditions.checkArgument(estimatedSize >= 0, "estimatedSize is negative");
        Preconditions.checkArgument(blockRestartInterval >= 0, "blockRestartInterval is negative");
        Preconditions.checkNotNull(comparator, "comparator is null");

        this.block = new DynamicSliceOutput(estimatedSize);
        this.blockRestartInterval = blockRestartInterval;
        this.comparator = comparator;

        restartPositions = new IntVector(32);
        restartPositions.add(0);  // first restart point must be 0
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        this.block = new DynamicSliceOutput(estimatedSize);
        this.blockRestartInterval = blockRestartInterval;
        this.comparator = comparator;

        restartPositions = new IntVector(32);
        restartPositions.add(0);  // first restart point must be 0
    }
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            lastFileRead = fileMetaData;
            lastFileReadLevel = levelNumber;

            // open the iterator
            InternalTableIterator iterator = tableCache.newIterator(fileMetaData);

            // seek to the key
            iterator.seek(key.getInternalKey());

            if (iterator.hasNext()) {
                // parse the key in the block
                Entry<InternalKey, Slice> entry = iterator.next();
                InternalKey internalKey = entry.getKey();
                Preconditions.checkState(internalKey != null, "Corrupt key for %s", key.getUserKey().toString(UTF_8));

                // if this is a value key (not a delete) and the keys match, return the value
                if (key.getUserKey().equals(internalKey.getUserKey())) {
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        return newIterator(file.getNumber());
    }

    public InternalTableIterator newIterator(long number)
    {
        return new InternalTableIterator(getTable(number).iterator());
    }
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        Collections.sort(fileMetaDataList, NEWEST_FIRST);

        readStats.clear();
        for (FileMetaData fileMetaData : fileMetaDataList) {
            // open the iterator
            InternalTableIterator iterator = tableCache.newIterator(fileMetaData);

            // seek to the key
            iterator.seek(key.getInternalKey());

            if (iterator.hasNext()) {
                // parse the key in the block
                Entry<InternalKey, Slice> entry = iterator.next();
                InternalKey internalKey = entry.getKey();
                Preconditions.checkState(internalKey != null, "Corrupt key for %s", key.getUserKey().toString(UTF_8));

                // if this is a value key (not a delete) and the keys match, return the value
                if (key.getUserKey().equals(internalKey.getUserKey())) {
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    }

    @Override
    public Level0Iterator iterator()
    {
        return new Level0Iterator(tableCache, files, internalKeyComparator);
    }
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        return createLevelConcatIterator(tableCache, files, internalKeyComparator);
    }

    public static LevelIterator createLevelConcatIterator(TableCache tableCache, List<FileMetaData> files, InternalKeyComparator internalKeyComparator)
    {
        return new LevelIterator(tableCache, files, internalKeyComparator);
    }
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        closed = true;
    }

    public static int crc32c(Slice data, CompressionType type)
    {
        PureJavaCrc32C crc32c = new PureJavaCrc32C();
        crc32c.update(data.getRawArray(), data.getRawOffset(), data.length());
        crc32c.update(type.persistentId() & 0xFF);
        return crc32c.getMaskedValue();
    }
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    }

    public static int getChunkChecksum(int chunkTypeId, byte[] buffer, int offset, int length)
    {
        // Compute the crc of the record type and the payload.
        PureJavaCrc32C crc32C = new PureJavaCrc32C();
        crc32C.update(chunkTypeId);
        crc32C.update(buffer, offset, length);
        return crc32C.getMaskedValue();
    }
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        return comparator.name();
    }

    @Override
    public Slice findShortestSeparator(Slice start, Slice limit) {
        return new Slice(comparator.findShortestSeparator(start.getBytes(), limit.getBytes()));
    }
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