• 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
  • Paul Clapham
  • Ron McLeod
  • Jeanne Boyarsky
  • Tim Cooke
Sheriffs:
  • Liutauras Vilda
  • paul wheaton
  • Henry Wong
Saloon Keepers:
  • Tim Moores
  • Tim Holloway
  • Stephan van Hulst
  • Carey Brown
  • Frits Walraven
Bartenders:
  • Piet Souris
  • Himai Minh

Viable Way To Copy SQLite Database To ArrayList?

 
Ranch Hand
Posts: 84
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I am creating a binded service to use for catching duplicates before they are written to my database.

In the service, I want to query everything from the database onStartCommand and write the results to an ArrayList that I can use in multiple methods with conditionals, etc.

Is there a viable way to achieve adding all of the database's records to an ArrayList?
 
Bartender
Posts: 1868
81
Android IntelliJ IDE MySQL Database Chrome Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
There are a few different ways that you could do this.

You can do this the manual with lot of code, or you can do with use something like Room
http://www.vogella.com/tutorials/AndroidSQLite/article.html
Or possibly an other ORM.

I'll see if I can find an example, with the all of the extra coding/typing.
 
Pete Letkeman
Bartender
Posts: 1868
81
Android IntelliJ IDE MySQL Database Chrome Java
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Here you go https://medium.com/wiselteach/android-sqlite-database-androidmonk-6b92d1bdf33b
Take a look at DBHandler.java which I've copied and pasted the part that may interest you below:

Please do not do a "SELECT * " as these types of queries are known to be slower then when you specify the fields explicitly.
With a small database this could be milliseconds, with distributed systems where the database is not on the same system this could add minutes or more.
 
Adam Wentz
Ranch Hand
Posts: 84
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Pete Letkeman wrote:Here you go https://medium.com/wiselteach/android-sqlite-database-androidmonk-6b92d1bdf33b
Take a look at DBHandler.java which I've copied and pasted the part that may interest you



Yes! This seems to be what I was looking for. I have been scouring the web all the day and never came across this.

Thanks a bunch, Pete!  
 
Pete Letkeman
Bartender
Posts: 1868
81
Android IntelliJ IDE MySQL Database Chrome Java
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
You are welcome, I'm glad you find this information useful.
 
what if we put solar panels on top of the semi truck trailer? That could power this tiny ad:
Free, earth friendly heat - from the CodeRanch trailboss
https://www.kickstarter.com/projects/paulwheaton/free-heat
reply
    Bookmark Topic Watch Topic
  • New Topic