Package org.iq80.leveldb.impl

Examples of org.iq80.leveldb.impl.Iq80DBFactory

103
104
105
106
107
108
109
110
111
112
        return new BlockHandle(offset, (int) size);
    }

    public static Slice writeBlockHandle(BlockHandle blockHandle)
    {
        Slice slice = Slices.allocate(MAX_ENCODED_LENGTH);
        SliceOutput sliceOutput = slice.output();
        writeBlockHandleTo(blockHandle, sliceOutput);
        return slice.slice();
    }
View Full Code Here
45
46
47
48
49
50
51
52
53
54
55
56
        if (sharedBytes < Math.min(start.length(), limit.length())) {
            // if we can add one to the last shared byte without overflow and the two keys differ by more than
            // one increment at this location.
            int lastSharedByte = start.getUnsignedByte(sharedBytes);
            if (lastSharedByte < 0xff && lastSharedByte + 1 < limit.getUnsignedByte(sharedBytes)) {
                Slice result = start.copySlice(0, sharedBytes + 1);
                result.setByte(sharedBytes, lastSharedByte + 1);

                assert (compare(result, limit) < 0) : "start must be less than last limit";
                return result;
            }
        }
View Full Code Here
62
63
64
65
66
67
68
69
70
71
72
73
    {
        // Find first character that can be incremented
        for (int i = 0; i < key.length(); i++) {
            int b = key.getUnsignedByte(i);
            if (b != 0xff) {
                Slice result = key.copySlice(0, i + 1);
                result.setByte(i, b +1);
                return result;
            }
        }
        // key is a run of 0xffs.  Leave it alone.
        return key;
View Full Code Here
71
72
73
74
75
76
77
78
79
        return new Footer(metaindexBlockHandle, indexBlockHandle);
    }

    public static Slice writeFooter(Footer Footer)
    {
        Slice slice = Slices.allocate(ENCODED_LENGTH);
        writeFooter(Footer, slice.output());
        return slice;
    }
View Full Code Here
190
191
192
193
194
195
196
197
198
199
200
201
202
203
    {
        Preconditions.checkArgument(slice.length() <= 0xffff, "length %s is larger than two bytes", slice.length());
        Preconditions.checkArgument(blockOffset + HEADER_SIZE <= BLOCK_SIZE);

        // create header
        Slice header = newLogRecordHeader(type, slice);

        // write the header and the payload
        ensureCapacity(header.length() + slice.length());
        header.getBytes(0, mappedByteBuffer);
        slice.getBytes(0, mappedByteBuffer);

        blockOffset += HEADER_SIZE + slice.length();
    }
View Full Code Here
222
223
224
225
226
227
228
229
230
231
232
233
    private Slice newLogRecordHeader(LogChunkType type, Slice slice)
    {
        int crc = getChunkChecksum(type.getPersistentId(), slice.getRawArray(), slice.getRawOffset(), slice.length());

        // Format the header
        Slice header = Slices.allocate(HEADER_SIZE);
        SliceOutput sliceOutput = header.output();
        sliceOutput.writeInt(crc);
        sliceOutput.writeByte((byte) (slice.length() & 0xff));
        sliceOutput.writeByte((byte) (slice.length() >>> 8));
        sliceOutput.writeByte((byte) (type.getPersistentId()));
View Full Code Here
49
50
51
52
53
54
55
56
    @Override
    protected Footer init() throws IOException {
        long size = fileChannel.size();
        data = fileChannel.map(MapMode.READ_ONLY, 0, size);
        Slice footerSlice = Slices.copiedBuffer(data, (int) size - Footer.ENCODED_LENGTH, Footer.ENCODED_LENGTH);
        return Footer.readFooter(footerSlice);
    }
View Full Code Here
101
102
103
104
105
106
107
108
109
110
111
//
//            Preconditions.checkState(blockTrailer.getCrc32c() == actualCrc32c, "Block corrupted: checksum mismatch");
//        }

        // decompress data
        Slice uncompressedData;
        ByteBuffer uncompressedBuffer = read(this.data, (int) blockHandle.getOffset(), blockHandle.getDataSize());
        if (blockTrailer.getCompressionType() == SNAPPY) {
            synchronized (MMapTable.class) {
                int uncompressedLength = uncompressedLength(uncompressedBuffer);
                if (uncompressedScratch.capacity() < uncompressedLength) {
View Full Code Here
98
99
100
101
102
103
104
105
106
        return new BlockTrailer(compressionType, crc32c);
    }

    public static Slice writeBlockTrailer(BlockTrailer blockTrailer)
    {
        Slice slice = Slices.allocate(ENCODED_LENGTH);
        writeBlockTrailer(blockTrailer, slice.output());
        return slice;
    }
View Full Code Here
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
        int sharedKeyLength = VariableLengthQuantity.readVariableLengthInt(data);
        int nonSharedKeyLength = VariableLengthQuantity.readVariableLengthInt(data);
        int valueLength = VariableLengthQuantity.readVariableLengthInt(data);

        // read key
        Slice key = Slices.allocate(sharedKeyLength + nonSharedKeyLength);
        SliceOutput sliceOutput = key.output();
        if (sharedKeyLength > 0) {
            Preconditions.checkState(previousEntry != null, "Entry has a shared key but no previous entry was provided");
            sliceOutput.writeBytes(previousEntry.getKey(), 0, sharedKeyLength);
        }
        sliceOutput.writeBytes(data, nonSharedKeyLength);

        // read value
        Slice value = data.readSlice(valueLength);

        return new BlockEntry(key, value);
    }
View Full Code Here
TOP

Related Classes of org.iq80.leveldb.impl.Iq80DBFactory

  • co.cask.cdap.data2.dataset2.lib.table.leveldb.LevelDBOrderedTableCore
  • co.cask.cdap.data2.dataset2.lib.table.leveldb.LevelDBOrderedTableService
  • com.alexkasko.springjdbc.compress.SnappyCompressor
  • com.cloudhopper.datastore.leveldb.LevelDbDataStore
  • com.fasterxml.storemate.backend.leveldb.LevelDBBuilder
  • com.google.common.util.concurrent.ThreadFactoryBuilder
  • com.nabalive.server.web.DataUtil
  • com.nabalive.server.web.TokenUtil
  • com.saasovation.common.port.adapter.persistence.eventsourcing.leveldb.LevelDBJournal
  • com.saasovation.common.port.adapter.persistence.eventsourcing.leveldb.LevelDBJournalRepairTool
    • Copyright © 2018 www.massapicom. All rights reserved.
    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.