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How to do select the data in batches using hibernate?
(5 answers)
Closed 5 years ago.
Say my query retrieves 30,000 records but I have to retrieve 3000 records in one batch. Totally I have to retrieve 30,000 records in 10 batches. I'm using spring hibernate, how to do?
Fetching data batch by batch using Spring and hibernate, refer below links :-
https://www.mkyong.com/hibernate/hibernate-fetching-strategies-examples/
http://www.javamakeuse.com/2015/03/tutorial-hibernate-4-batch-fetching.html
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Does firebase log metadata such as 'created_at' automatically
(1 answer)
Closed 4 years ago.
My Android application is connected to Firebase, and I retrieve data from database successfully. But my question is there is any way to get what time the data stored in ddatabase to retrieve it to my application?
I hope my question is clear.
is there is any way to get what time the data stored in ddatabase
No, Firebase realtime database does not store metadata. You should create your own mechanism by storing the desired time as a timestamp in the database as explained here.
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Prepopulated database - Android application
(4 answers)
Closed 5 years ago.
I have done a lot of research about the SQLite database, and have already created a SQLite custom helper that extended SQLiteOpenHelper. However, I don't understand where to actually create the database and fill it out. I am trying to have the database be created immediately; I have all the information that needs to be inserted. In other words, no user input is required to fill it out.
Is the best practice to create an individual java class or activity that fills out the database, that can then be accessed by the activities?
Thanks - did a lot of research on creating the database and helper, just having trouble understanding this.
I am trying to have the database be created immediately; I have all the information that needs to be inserted.
Create the SQLite database on your development machine. Package it in assets/ and use SQLiteAssetHelper to ship it with your app. Then, you can query from that data (e.g., to display it to the user).
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Hibernate pagination mechanism
(3 answers)
Closed 5 years ago.
In pagination I am having 1000 records but by default it should load only 100 records first and remaining should not load until I fetch those records from database.
Please help me.
Thanks in advance for your help.
Its very simple. In each pagination setFirstResult will be changed.
Using:
query.setFirstResult(0);
query.setMaxResults(100);
Duplicate of hibernate pagination mechanism
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Read Only Database Connection with Hibernate
(3 answers)
Closed 6 years ago.
How can I make my database completely read-only for Hibernate? I don't want Hibernate to be able to change neither table definitions (e.g. create/delete/update tables) nor data in tables. Is there some setting in percictence.xml that makes connection read-only?
Hibernate only does what's asked of it - if you set hibernate.hbm2ddl to auto | update | create | create-drop it will try to modify the DB schema. If you run an insert, it will try to insert data. If you want the DB to be protected against it, assign read-only permissions to the DB user that Hibernate is configured to use.
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How to call Oracle Function or Procedure using Hibernate (EntityManager) or JPA
(6 answers)
Closed 8 years ago.
Am new to hibernate. Am trying to call a oracle stored procedure through Hibernate. Can I get some steps to follow to call a procedure through Hibernate.
Thanks in advance.
Starting from JPA 2.1 You can use #NamedStoredProcedureQuery annotation. This annotation can be specified on an entity or mapped superclass
#NamedStoredProcedureQuery(name="fooStoredProcedure", procedureName="someProcedureName")