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- Why do we have to use @Modifying annotation for queries in Data Jpa?
Using @Modifying(clearAutomatically=true) will drop any pending updates on the managed entities in the persistence context spring states the following : Doing so triggers the query annotated to the method as an updating query instead of selecting one
- java - Do we need both @Transactional and @Modifying annotation in . . .
Modifying method signature can only return void, Integer or int Updating queries MUST be transactional, mark with @Transactional Spring Data will drop all non-flushed changes pending in the EntityManager , change with @Modifying(clearAutomatically=false)
- Spring Data JPA @Modifying annotation usage with @Transactional
I am new in Spring Data JPA and will use @Modifying(clearAutomatically = true, flushAutomatically = true) annotation for an update method that updated a name field of Product entity I have 2 questions that made me confused: 1 Do we need to use @Transactional with @Modifying annotation? 2 What does @Modifying exactly do?
- Update via @Modifying @Query in Spring Data not working
I have the following repository defined: @Repository public interface IntegrationPeriodConstraintsRepository extends CrudRepository lt;IntegrationPeriodConstraint
- java - Is there any use for Spring Data JPAs @Modifying without . . .
AFAIK @Modifying is there to take care of persistence context cleanup in case of INSERT UPDATE DELETE queries specified in @Query annotation But what is pure @Modifying good for? According to this post, is seems you should always write @Modifying(clearAutomatically=true, flushAutomatically=true) The documentation says:
- spring - Can I skip writing flushAutomatically=true in Modifying . . .
@Modifying annotation has clearAutomatically attribute which defines whether it should clear the underlying persistence context after executing the modifying query When executing modifying queries with this attribute activated, it drops all non-flushed changes still pending in the EntityManager
- In Java, can you modify a List while iterating through it?
There is nothing wrong with the idea of modifying an element inside a list while traversing it (don't modify the list itself, that's not recommended), but it can be better expressed like this: for (int i = 0; i < letters size(); i++) { letters set(i, "D"); } At the end the whole list will have the letter "D" as its content
- @Modifying annotation in the latest Spring Data JPA versions?
from what i understand from the references, yes you have to use @Modifying for an Insert create delete ddl query And you have to use @Modifying(clearAutomatically=true, flushAutomatically=true) if you are doing more update modifying operations before or after another update modifying operations In the given SO he clearly stated whats
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