• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

URLyBird's [Version 1.2.3] : create/update/delete

 
Ranch Hand
Posts: 67
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
One more question on Create and delete method.


For my create method..
- I am not looping through my current records to find delete records, to insert this new record. I just create a new record.
- I also assume that data [input] array for createRecord and updateRecord method does not contain delete flag..when I create record, i add delete flag = 00.and for update method, i just leave delete field alone.

specs says..
// Creates a new record in the database (possibly reusing a
// deleted entry). Inserts the given data, and returns the record
// number of the new record.
public long createRecord(String [] data)
throws DuplicateKeyException;

it says "possibly reusing "..am I gona loose points if i do not reuse the delete field. I did not reuse the delete record b/c what if in the future
they want reuse that record..??

Now delete specs says reuse..I do not see "possibly reusing ".. // Deletes a record, making the record number and associated disk
// storage available for reuse.
// Throws SecurityException if the record is locked with a cookie
// other than lockCookie.
public void deleteRecord(long recNo, long lockCookie)
throws RecordNotFoundException, SecurityException;

Thank you..
 
Ranch Hand
Posts: 47
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi Payal,
Don't worry about reusing a deleted record. It's not a requirement, just a hint.
For the delete method, it is just said that the record is now available and not it must be used for a new record. It's my interpretation ...
However, implementing that functionality could improve your score (may be !).
Anyway, explain your choice in your choices.txt
 
Bartender
Posts: 3648
16
Android Mac OS X Firefox Browser Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Also depends on what you do in your delete method. You can simply mark the delete flag to 1 and leave the data intact, or change delete flag and write a empty array to make the row empty. Also you will need to take into consideration of these deleted rows when calculating the number of records. If delete flag=1, is it a record or not?
 
Payal Shah
Ranch Hand
Posts: 67
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Thank you.
 
Don't get me started about those stupid light bulbs.
reply
    Bookmark Topic Watch Topic
  • New Topic