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Why I can't use EAGER fetching for the same purpose
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EAGER fetching tells Hibernate to get the related entities with the initial query. This can be very efficient because all entities are fetched with only one query. But in most cases it just creates a huge overhead because you select entities you don't need in your use case. You can prevent this with FetchType.
Eager Loading is a design pattern in which data initialization occurs on the spot. Lazy Loading is a design pattern that we use to defer initialization of an object as long as it's possible.
Hibernate defines the following fetching strategies: Join fetching: Hibernate retrieves the associated instance or collection in the same SELECT , using an OUTER JOIN . Select fetching: a second SELECT is used to retrieve the associated entity or collection.
Enum FetchType. Defines strategies for fetching data from the database. The EAGER strategy is a requirement on the persistence provider runtime that data must be eagerly fetched. The LAZY strategy is a hint to the persistence provider runtime that data should be fetched lazily when it is first accessed.
You can use EAGER fetching to obtain the same result, at the end. But this means things will be always eagerly loaded (vs when you just need to). Is this what you want?
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