This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I'll start with an explanation and end with the question
Currently in my read method I seek a record and read the entire thing so that only a small bit of code has to be synchronized. Then I take that byte array and go through it in a for loop (with a few nested for loops ). Should I go this route or to cut down on nested blocks should I read stuff out one field at a time (more code in synchronized block). Stupid question I know but I am just really paranoid about code complexity (nested loops seem to be a no no even though they aren't that confusing). The other question I had was concerning a VacantRoom or Record DTO, I imagine anyone who used it didn't change the sun/oracle provided Interface so that the read method returned a DTO so how were you able to use it? It would probably be nice for front end validation but I was wondering if there was a way to get around the DB interface's read method (call it with another method that changes a String into DTO but then I wouldn't want read to be public or maybe it wouldn't matter blablabla).
1/ I synchronized the complete methods of the Data class (a simple approach but less performant). Just like you I read the complete record and then I convert the bytes to a String. To convert the bytes into the String I just need 1 for loop. Maybe I also have to mention that I don't use a static database schema but I also read it from the database file.
2/ If you do not want to fail automatically, do NOT change the interface you got. I created an own interface which extends the given interface and added a few extra methods. None of these extra methods used a transfer object. I opted for a thin client approach and that's where the transfer objects come into play I created a business service with a few methods and these methods use transfer objects, so it's the business service which converts from String to transfer object (and vice versa). In the Data class itself I work with String (which makes my Data class also usable for a database file with customers or hotels)
Yea I just thought about it a little harder and realized that I can do it with one for loop as well. DTO in the business layer, I could see how that would be nice. Thank you sir, I really appreciate the help.
I am nearly a full blooded German with a Norwegian name that lives in Minnesota, USA . For some reason your name struck me as Spanish or maybe Italian, but your from Belgium right? That is why I love this site, it seems to bring the world a little closer heh, no it's just really cool to see the diverse selection of people that can get together and help each other with their common propensity...Software developing