Examples of org.syncany.database.ChunkEntry

org.syncany.database.ChunkEntry
The chunk entry represents a single chunk reference in the database model and is identified by the chunk's checksum. Due to the fact that the chunk entry is a reference, it does not contain the chunk's actual data.
A chunk can appear in a {@link MultiChunkEntry} and in a {@link FileContent}. @see MultiChunkEntry @see FileContent @author Philipp C. Heckel

    newFileVersion.setType(FileType.FILE);


    newFileHistory.addFileVersion(newFileVersion);
    newDatabaseVersion.addFileHistory(newFileHistory);


    ChunkEntry newChunkEntry = new ChunkEntry(ChunkChecksum.parseChunkChecksum("aaaaaaaaaaaaaaaaaaaaab2b263ffa4cc48e282f"), 1);
    newDatabaseVersion.addChunk(newChunkEntry);
    
    MultiChunkEntry newMultiChunkEntry = new MultiChunkEntry(MultiChunkId.parseMultiChunkId("1234567890987654321234567876543456555555"), 10);
    newMultiChunkEntry.addChunk(newChunkEntry.getChecksum());
    newDatabaseVersion.addMultiChunk(newMultiChunkEntry);
    
    FileContent newFileContent = new FileContent();
    newFileContent.setChecksum(FileChecksum.parseFileChecksum("aaaaaaaaaaaaaaaaaaaaab2b263ffa4cc48e282f"));
    newFileContent.setSize(1L);    
    newFileContent.addChunk(newChunkEntry.getChecksum());
    newDatabaseVersion.addFileContent(newFileContent);    
    
    // c. Persist database version
    databaseVersionDao.persistDatabaseVersion(newDatabaseVersion);

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    MemoryDatabase database = new MemoryDatabase();


    // Round 1: Add chunk to new database version, then add database version
    DatabaseVersion databaseVersion1 = TestDatabaseUtil.createDatabaseVersion();


    ChunkEntry chunkA1 = new ChunkEntry(new ChunkChecksum(new byte[] { 1, 2, 3, 4, 5, 7, 8, 9, 0 }), 12);
    databaseVersion1.addChunk(chunkA1);


    database.addDatabaseVersion(databaseVersion1);
    assertEquals(chunkA1, database.getChunk(new ChunkChecksum(new byte[] { 1, 2, 3, 4, 5, 7, 8, 9, 0 })));


    // Round 2: Add chunk to new database version, then add database version
    DatabaseVersion databaseVersion2 = TestDatabaseUtil.createDatabaseVersion(databaseVersion1);


    ChunkEntry chunkA2 = new ChunkEntry(new ChunkChecksum(new byte[] { 9, 8, 7, 6, 5, 4, 3, 2, 1 }), 112);
    databaseVersion2.addChunk(chunkA2);


    database.addDatabaseVersion(databaseVersion2);
    assertEquals(chunkA1, database.getChunk(new ChunkChecksum(new byte[] { 1, 2, 3, 4, 5, 7, 8, 9, 0 })));
    assertEquals(chunkA2, database.getChunk(new ChunkChecksum(new byte[] { 9, 8, 7, 6, 5, 4, 3, 2, 1 })));


    // Round 3: Add chunk to new database version, then add database version
    DatabaseVersion databaseVersion3 = TestDatabaseUtil.createDatabaseVersion(databaseVersion2);


    ChunkEntry chunkA3 = new ChunkEntry(new ChunkChecksum(new byte[] { 1, 1, 1, 1, 1, 1, 1, 1, 1 }), 192);
    databaseVersion3.addChunk(chunkA3);


    database.addDatabaseVersion(databaseVersion3);
    assertEquals(chunkA1, database.getChunk(new ChunkChecksum(new byte[] { 1, 2, 3, 4, 5, 7, 8, 9, 0 })));
    assertEquals(chunkA2, database.getChunk(new ChunkChecksum(new byte[] { 9, 8, 7, 6, 5, 4, 3, 2, 1 })));

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    // Round 1: Add chunk to multichunk
    DatabaseVersion databaseVersion1 = TestDatabaseUtil.createDatabaseVersion();


    MultiChunkEntry multiChunkP1 = new MultiChunkEntry(new MultiChunkId(new byte[] { 8, 8, 8, 8, 8, 8, 8, 8 }), 10);
    ChunkEntry chunkA1 = new ChunkEntry(new ChunkChecksum(new byte[] { 1, 2, 3, 4, 5, 7, 8, 9, 0 }), 12);


    multiChunkP1.addChunk(chunkA1.getChecksum());
    databaseVersion1.addChunk(chunkA1);
    databaseVersion1.addMultiChunk(multiChunkP1);


    database.addDatabaseVersion(databaseVersion1);


    assertEquals(chunkA1, database.getChunk(new ChunkChecksum(new byte[] { 1, 2, 3, 4, 5, 7, 8, 9, 0 })));
    assertEquals(multiChunkP1, database.getMultiChunk(new MultiChunkId(new byte[] { 8, 8, 8, 8, 8, 8, 8, 8 })));


    // Round 2: Add chunk to multichunk
    DatabaseVersion databaseVersion2 = TestDatabaseUtil.createDatabaseVersion(databaseVersion1);


    MultiChunkEntry multiChunkP2 = new MultiChunkEntry(new MultiChunkId(new byte[] { 7, 7, 7, 7, 7, 7, 7, 7, 7 }), 11);
    MultiChunkEntry multiChunkP3 = new MultiChunkEntry(new MultiChunkId(new byte[] { 5, 5, 5, 5, 5, 5, 5, 5, 5 }), 12);


    ChunkEntry chunkA2 = new ChunkEntry(new ChunkChecksum(new byte[] { 9, 2, 3, 4, 5, 7, 8, 9, 0 }), 912);
    ChunkEntry chunkA3 = new ChunkEntry(new ChunkChecksum(new byte[] { 8, 2, 3, 4, 5, 7, 8, 9, 0 }), 812);
    ChunkEntry chunkA4 = new ChunkEntry(new ChunkChecksum(new byte[] { 7, 2, 3, 4, 5, 7, 8, 9, 0 }), 712);


    multiChunkP2.addChunk(chunkA2.getChecksum());
    multiChunkP2.addChunk(chunkA3.getChecksum());
    multiChunkP3.addChunk(chunkA4.getChecksum());


    databaseVersion2.addChunk(chunkA2);
    databaseVersion2.addChunk(chunkA3);
    databaseVersion2.addChunk(chunkA4);

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    // Run
    TestSqlUtil.runSqlFromResource(databaseConnection, "test.insert.set3.sql");
    
    ChunkSqlDao chunkDao = new ChunkSqlDao(databaseConnection);
    
    ChunkEntry chunk1 = chunkDao.getChunk(ChunkChecksum.parseChunkChecksum("615fba8c2281d5bee891eb092a252d235c237457"));
    ChunkEntry chunk2 = chunkDao.getChunk(ChunkChecksum.parseChunkChecksum("ab85720d3f31bd08ca1cd25dcd8a490e5f00783b"));
    ChunkEntry chunkNonExistent = chunkDao.getChunk(ChunkChecksum.parseChunkChecksum("beefbeefbeefbeefbeefbeefbeefbeefbeefbeef"));
    
    // Test
    assertNotNull(chunk1);
    assertEquals("615fba8c2281d5bee891eb092a252d235c237457", chunk1.getChecksum().toString());
    assertEquals(8387, chunk1.getSize());

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        chunkEntry = newDatabaseVersion.getChunk(chunkChecksum);


        if (chunkEntry == null) {
          logger.log(Level.FINER, "- Chunk new: {0}", chunkChecksum.toString());


          chunkEntry = new ChunkEntry(chunkChecksum, chunk.getSize());
          newDatabaseVersion.addChunk(chunkEntry);


          return true;
        }
      }

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  protected Map<ChunkChecksum, ChunkEntry> createChunkEntries(ResultSet resultSet) throws SQLException {
    Map<ChunkChecksum, ChunkEntry> chunks = new HashMap<ChunkChecksum, ChunkEntry>();


    while (resultSet.next()) {
      ChunkEntry chunkEntry = createChunkEntryFromRow(resultSet);
      chunks.put(chunkEntry.getChecksum(), chunkEntry);
    }


    return chunks;
  }

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    return chunks;
  }


  protected ChunkEntry createChunkEntryFromRow(ResultSet resultSet) throws SQLException {
    ChunkChecksum chunkChecksum = ChunkChecksum.parseChunkChecksum(resultSet.getString("checksum"));
    return new ChunkEntry(chunkChecksum, resultSet.getInt("size"));
  }

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      if (elementPath.equalsIgnoreCase("/database/databaseVersions/databaseVersion/chunks/chunk")) {
        String chunkChecksumStr = attributes.getValue("checksum");
        ChunkChecksum chunkChecksum = ChunkChecksum.parseChunkChecksum(chunkChecksumStr);
        int chunkSize = Integer.parseInt(attributes.getValue("size"));


        ChunkEntry chunkEntry = new ChunkEntry(chunkChecksum, chunkSize);
        databaseVersion.addChunk(chunkEntry);
      }
      else if (elementPath.equalsIgnoreCase("/database/databaseVersions/databaseVersion/fileContents/fileContent")) {
        String checksumStr = attributes.getValue("checksum");
        long size = Long.parseLong(attributes.getValue("size"));

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Related Classes of org.syncany.database.ChunkEntry

org.syncany.database.dao.ChunkSqlDao

org.syncany.database.dao.DatabaseXmlParseHandler

org.syncany.operations.up.Indexer$IndexerDeduperListener

org.syncany.tests.database.dao.ChunkDaoTest

org.syncany.tests.database.dao.DatabaseVersionDaoTest

org.syncany.tests.database.MemoryDatabaseCacheTest

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