This week's book giveaway is in the Jobs Discussion forum.
We're giving away four copies of Soft Skills: The software developer's life manual and have John Sonmez on-line!
See this thread for details.
Win a copy of Soft Skills: The software developer's life manual this week in the Jobs Discussion forum!
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

Creating a database from Java Source Code

 
Walther Mueller
Greenhorn
Posts: 3
  • 0
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hello,
I'm trying to develop a local database using derby/JavaDB.

I've created a txt-file where I have the DDL-Statements to create the database and
a txt-file where i initialize the tables with INSERT statements.

I think I've found a solution how to load these txt files from Java and execute them here on the board.

Execute file


My question is, what ist the best practise on to perform the file only once?

I've seen solutions were this is done in the built.xml but I'don't know exactly how to do it.
My naive solution would be to put a counter in the main method were my application is started and to change the
counter the first time the application is started and the database created.
I would check the counter with a if-clause to ensure the txt-files aren't executed twice.

Any others/betters ideas?
Cheers Walther
 
Walther Mueller
Greenhorn
Posts: 3
  • 0
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Okay,
the filed solution obviously does not work.
Still the question remains how to solve such a problem. Not from source code??
Regards
 
Jeanne Boyarsky
author & internet detective
Marshal
Posts: 33667
316
Eclipse IDE Java VI Editor
  • 0
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Can you do a database query to see if a table created by the DDL exists? That would tell you if it had been run already.
 
Consider Paul's rocket mass heater.
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic