Apache Transaction:write file transactionally - how to use resourceId

Question

If anybody implemented transactional writing to file,please, assist me.
Related topic was discussed in earlier thread(transactional write).

Use case is following

Answer 1

As far nobody answers, I try do that from my latest experience.

Useful documentataion:
example2(.ppt)

Simplified algorithm looks like(actually,depicted in example2):
1. initialize FileResourceManager
2. start FileResourceManager
3. get transaction Id from FileResourceManager instance
4. start transaction with transaction Id from step 3
5. write resource you need - here is mentioned write it transactionally
,so looks like it's the major step!
6. commit or rollback transaction

Note: resourceId,about i asked in ,my question, is simply name of transactional file. This naming doesn't depict very good this attribute.

Code, I used:

private static final org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger(FileAppender.class);
private static LoggerFacade loggerFacade = new Log4jLogger(logger);

private static String tempDir = (String) System.getProperties().get("java.io.tmpdir");

private FileResourceManager frm = new FileResourceManager(tempDir, tempDir, false, loggerFacade);
private static OutputStream outputStream;

public void writeOut(E event) throws IOException {
    Object txId = null;
    try {
        frm.start();
        txId = frm.generatedUniqueTxId();
        frm.startTransaction(txId);
        outputStream = frm.writeResource(txId, fileName, true);
        frm.commitTransaction(txId);

    }

    catch (Exception e) {
        throw new IOException("DB rollback");
    }
}