Examples with FileIOError com.helger.commons.io.file.FileIOError used on opensource projects

Example 11 with FileIOError

use of com.helger.commons.io.file.FileIOError in project ph-commons by phax.

the class FileIntIDFactory method readAndUpdateIDCounter.

/*
   * Note: this method must only be called from within a locked section!
   */
@Override
@MustBeLocked(ELockType.WRITE)
protected final int readAndUpdateIDCounter(@Nonnegative final int nReserveCount) {
    // Read the old content
    final String sContent = SimpleFileIO.getFileAsString(m_aFile, CHARSET_TO_USE);
    final int nRead = sContent != null ? StringParser.parseInt(sContent.trim(), 0) : 0;
    // Write the new content to the new file
    // This will fail, if the disk is full
    SimpleFileIO.writeFile(m_aNewFile, Integer.toString(nRead + nReserveCount), CHARSET_TO_USE);
    FileIOError aIOError;
    boolean bRenamedToPrev = false;
    if (m_aFile.exists()) {
        // Rename the existing file to the prev file
        aIOError = FileOperationManager.INSTANCE.renameFile(m_aFile, m_aPrevFile);
        bRenamedToPrev = true;
    } else
        aIOError = new FileIOError(EFileIOOperation.RENAME_FILE, EFileIOErrorCode.NO_ERROR);
    if (aIOError.isSuccess()) {
        // Rename the new file to the destination file
        aIOError = FileOperationManager.INSTANCE.renameFile(m_aNewFile, m_aFile);
        if (aIOError.isSuccess()) {
            // Finally delete the prev file (may not be existing for fresh
            // instances)
            aIOError = FileOperationManager.INSTANCE.deleteFileIfExisting(m_aPrevFile);
        } else {
            // -> Revert original rename to stay as consistent as possible
            if (bRenamedToPrev)
                FileOperationManager.INSTANCE.renameFile(m_aPrevFile, m_aFile);
        }
    }
    if (aIOError.isFailure())
        throw new IllegalStateException("Error on rename(existing-old)/rename(new-existing)/delete(old): " + aIOError);
    return nRead;
}

Example 12 with FileIOError

use of com.helger.commons.io.file.FileIOError in project ph-commons by phax.

the class FileLongIDFactory method readAndUpdateIDCounter.

/*
   * Note: this method must only be called from within a locked section!
   */
@Override
protected final long readAndUpdateIDCounter(@Nonnegative final int nReserveCount) {
    final String sContent = SimpleFileIO.getFileAsString(m_aFile, CHARSET_TO_USE);
    final long nRead = sContent != null ? StringParser.parseLong(sContent.trim(), 0) : 0;
    // Write the new content to the new file
    // This will fail, if the disk is full
    SimpleFileIO.writeFile(m_aNewFile, Long.toString(nRead + nReserveCount), CHARSET_TO_USE);
    FileIOError aIOError;
    boolean bRenamedToPrev = false;
    if (m_aFile.exists()) {
        // Rename the existing file to the prev file
        aIOError = FileOperationManager.INSTANCE.renameFile(m_aFile, m_aPrevFile);
        bRenamedToPrev = true;
    } else
        aIOError = new FileIOError(EFileIOOperation.RENAME_FILE, EFileIOErrorCode.NO_ERROR);
    if (aIOError.isSuccess()) {
        // Rename the new file to the destination file
        aIOError = FileOperationManager.INSTANCE.renameFile(m_aNewFile, m_aFile);
        if (aIOError.isSuccess()) {
            // Finally delete the prev file (may not be existing for fresh
            // instances)
            aIOError = FileOperationManager.INSTANCE.deleteFileIfExisting(m_aPrevFile);
        } else {
            // -> Revert original rename to stay as consistent as possible
            if (bRenamedToPrev)
                FileOperationManager.INSTANCE.renameFile(m_aPrevFile, m_aFile);
        }
    }
    if (aIOError.isFailure())
        throw new IllegalStateException("Error on rename(existing-old)/rename(new-existing)/delete(old): " + aIOError);
    return nRead;
}