Package org.iq80.leveldb.util

Examples of org.iq80.leveldb.util.MergingIterator

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        // close the block
        Slice raw = blockBuilder.finish();

        // attempt to compress the block
        Slice blockContents = raw;
        CompressionType blockCompressionType = CompressionType.NONE;
        if (compressionType == CompressionType.SNAPPY) {
            ensureCompressedOutputCapacity(maxCompressedLength(raw.length()));
            try {
                int compressedSize = Snappy.compress(raw.getRawArray(), raw.getRawOffset(), raw.length(), compressedOutput.getRawArray(), 0);
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    }

    public static BlockTrailer readBlockTrailer(Slice slice)
    {
        SliceInput sliceInput = slice.input();
        CompressionType compressionType = CompressionType.getCompressionTypeByPersistentId(sliceInput.readUnsignedByte());
        int crc32c = sliceInput.readInt();
        return new BlockTrailer(compressionType, crc32c);
    }
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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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    try {
      iter.seek(key);
    } catch (DBException e) {
      throw e;
    } catch (RuntimeException e) {
      throw new DBException(e.getMessage(), e);
    }
  }
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    try {
      iter.seekToFirst();
    } catch (DBException e) {
      throw e;
    } catch (RuntimeException e) {
      throw new DBException(e.getMessage(), e);
    }
  }
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    try {
      iter.seekToLast();
    } catch (DBException e) {
      throw e;
    } catch (RuntimeException e) {
      throw new DBException(e.getMessage(), e);
    }
  }
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    try {
      return iter.hasNext();
    } catch (DBException e) {
      throw e;
    } catch (RuntimeException e) {
      throw new DBException(e.getMessage(), e);
    }
  }
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    try {
      return iter.next();
    } catch (DBException e) {
      throw e;
    } catch (RuntimeException e) {
      throw new DBException(e.getMessage(), e);
    }
  }
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    try {
      return iter.peekNext();
    } catch (DBException e) {
      throw e;
    } catch (RuntimeException e) {
      throw new DBException(e.getMessage(), e);
    }
  }
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    try {
      return iter.hasPrev();
    } catch (DBException e) {
      throw e;
    } catch (RuntimeException e) {
      throw new DBException(e.getMessage(), e);
    }
  }
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