Package org.iq80.leveldb.impl

Examples of org.iq80.leveldb.impl.Iq80DBFactory

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        this.databaseDir = databaseDir;

        //use custom comparator if set
        DBComparator comparator = options.comparator();
        UserComparator userComparator;
        if (comparator != null) {
            userComparator = new CustomUserComparator(comparator);
        }else{
            userComparator = new BytewiseComparator();
        }
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    public SeekingIteratorAdapter iterator(ReadOptions options)
    {
        checkBackgroundException();
        mutex.lock();
        try {
            DbIterator rawIterator = internalIterator();


            // filter any entries not visible in our snapshot
            SnapshotImpl snapshot = getSnapshot(options);
            SnapshotSeekingIterator snapshotIterator = new SnapshotSeekingIterator(rawIterator, snapshot, internalKeyComparator.getUserComparator());
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            MemTableIterator iterator = null;
            if (immutableMemTable != null) {
                iterator = immutableMemTable.iterator();
            }
            Version current = versions.getCurrent();
            return new DbIterator(memTable.iterator(), iterator, current.getLevel0Files(), current.getLevelIterators(), internalKeyComparator);
        }
        finally {
            mutex.unlock();
        }
    }
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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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        List<InternalIterator> list = newArrayList();
        for (int which = 0; which < 2; which++) {
          if (!c.getInputs()[which].isEmpty()) {
            if (c.getLevel() + which == 0) {
                List<FileMetaData> files = c.getInputs()[which];
                list.add(new Level0Iterator(tableCache, files, internalKeyComparator));
            } else {
              // Create concatenating iterator for the files from this level
              list.add(Level.createLevelConcatIterator(tableCache, c.getInputs()[which], internalKeyComparator));
            }
          }
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