private FileContent getFileContentWithChunkChecksums(FileChecksum fileChecksum) {
try (PreparedStatement preparedStatement =
getStatement("filecontent.select.all.getFileContentByChecksumWithChunkChecksums.sql")) {
preparedStatement.setString(1, fileChecksum.toString());
try (ResultSet resultSet = preparedStatement.executeQuery()) {
FileContent fileContent = null;
while (resultSet.next()) {
if (fileContent == null) {
fileContent = new FileContent();
fileContent.setChecksum(
FileChecksum.parseFileChecksum(resultSet.getString("checksum")));
fileContent.setSize(resultSet.getLong("size"));
}
// Add chunk references
ChunkChecksum chunkChecksum =
ChunkChecksum.parseChunkChecksum(resultSet.getString("chunk_checksum"));
fileContent.addChunk(chunkChecksum);
}
return fileContent;
}
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
private Map<FileChecksum, FileContent> createFileContents(ResultSet resultSet)
throws SQLException {
Map<FileChecksum, FileContent> fileContents = new HashMap<FileChecksum, FileContent>();
FileChecksum currentFileChecksum = null;
while (resultSet.next()) {
FileChecksum fileChecksum = FileChecksum.parseFileChecksum(resultSet.getString("checksum"));
FileContent fileContent = null;
if (currentFileChecksum != null && currentFileChecksum.equals(fileChecksum)) {
fileContent = fileContents.get(fileChecksum);
} else {
fileContent = new FileContent();
fileContent.setChecksum(fileChecksum);
fileContent.setSize(resultSet.getLong("size"));
}
ChunkChecksum chunkChecksum =
ChunkChecksum.parseChunkChecksum(resultSet.getString("chunk_checksum"));
fileContent.addChunk(chunkChecksum);
fileContents.put(fileChecksum, fileContent);
currentFileChecksum = fileChecksum;
}
return fileContents;
}
private void addFileVersion(FileProperties fileProperties) {
if (fileProperties.getChecksum() != null) {
logger.log(
Level.FINER,
"- /File: {0} (checksum {1})",
new Object[] {fileProperties.getRelativePath(), fileProperties.getChecksum()});
} else {
logger.log(
Level.FINER,
"- /File: {0} (directory/symlink/0-byte-file)",
fileProperties.getRelativePath());
}
// 1. Determine if file already exists in database
PartialFileHistory lastFileHistory = guessLastFileHistory(fileProperties);
FileVersion lastFileVersion =
(lastFileHistory != null) ? lastFileHistory.getLastVersion() : null;
// 2. Create new file history/version
PartialFileHistory fileHistory = createNewFileHistory(lastFileHistory);
FileVersion fileVersion = createNewFileVersion(lastFileVersion, fileProperties);
// 3. Compare new and last version
FileProperties lastFileVersionProperties =
fileVersionComparator.captureFileProperties(lastFileVersion);
FileVersionComparison lastToNewFileVersionComparison =
fileVersionComparator.compare(fileProperties, lastFileVersionProperties, true);
boolean newVersionDiffersFromToLastVersion = !lastToNewFileVersionComparison.equals();
if (newVersionDiffersFromToLastVersion) {
fileHistory.addFileVersion(fileVersion);
newDatabaseVersion.addFileHistory(fileHistory);
logger.log(Level.INFO, " * Added file version: " + fileVersion);
logger.log(Level.INFO, " based on file version: " + lastFileVersion);
} else {
logger.log(Level.INFO, " * NOT ADDING file version: " + fileVersion);
logger.log(Level.INFO, " b/c IDENTICAL prev.: " + lastFileVersion);
}
// 4. Add file content (if not a directory)
if (fileProperties.getChecksum() != null && fileContent != null) {
fileContent.setSize(fileProperties.getSize());
fileContent.setChecksum(fileProperties.getChecksum());
// Check if content already exists, throw gathered content away if it does!
FileContent existingContent =
localDatabase.getFileContent(fileProperties.getChecksum(), false);
if (existingContent == null) {
newDatabaseVersion.addFileContent(fileContent);
} else {
// Uses existing content (already in database); ref. by checksum
}
}
}
private FileContent getFileContentWithoutChunkChecksums(FileChecksum fileChecksum) {
try (PreparedStatement preparedStatement =
getStatement("filecontent.select.all.getFileContentByChecksumWithoutChunkChecksums.sql")) {
preparedStatement.setString(1, fileChecksum.toString());
try (ResultSet resultSet = preparedStatement.executeQuery()) {
if (resultSet.next()) {
FileContent fileContent = new FileContent();
fileContent.setChecksum(FileChecksum.parseFileChecksum(resultSet.getString("checksum")));
fileContent.setSize(resultSet.getLong("size"));
return fileContent;
}
}
return null;
} catch (SQLException e) {
throw new RuntimeException(e);
}
}