Can I use an id instead of reference object?

[magicu]

Code: Select all

BlogPtr blogPtr(new Blog);

blogPtr->authorPtrX = authorPtr;
blogPtr->blog_text = "";
blogPtr->....

qx::dao::insert_with_all_relationship(blogPtr);

Do I have to get authorPtr first by another query? It's too slow. Can I use an int id of author instead of authorPtr object?

[QxOrm admin]

If you are sure that your authorPtr already exists into database, I think that you can set only the ID => It would work...

You can also imagine to fetch all authors in your program and then store all of them into the cache.
Then you will not have to fetch your author a second time because it is already in the cache.
And to update your cache each time you make a modif on author table, you can use QxOrm trigger to be sure that your cache is up-to-date.
But there is other ways to optimize your program...

For more details about qx::cache : http://www.qxorm.com/qxorm_en/faq.html#faq_220
For more details about triggers : http://www.qxorm.com/qxorm_en/faq.html#faq_130

[magicu]

If you are sure that your authorPtr already exists into database, I think that you can set only the ID => It would work...

It won't work, I test some code like this:

Code: Select all

AuthorPtr authorPtr (new Author);
authorPtr ->id = 1; // The id 1 is exist in author

BlogPtr blogPtr(new Blog);

blogPtr->authorPtrX = authorPtr;
blogPtr->blog_text = "";
blogPtr->....

qx::dao::insert_with_all_relationship(blogPtr);  // "qx::dao::insert(blogPtr);" is also invalid



No error occored, but I found nothing in DB

[QxOrm admin]

What is the SQL generated by QxOrm library in your degugger window please ?