JPA - Cascade Type

Card Puncher Data Processing


The cascade parameter on a relationship defines the entity operation that must be cascaded to the target of the association.

See cascadeType

For all entities Y referenced by a relationship from X, if the relationship to Y has been annotated with the cascade element value cascade=PERSIST or cascade=ALL, the persist operation is applied to Y.

Bidirectional relationships between managed entities will be persisted based on references held by the owning side of the relationship.

The effect of the cascading of persist, merge, remove, or detach is immediately visible to the contains method, whereas the actual insertion, modification, or deletion of the database representation for the entity may be deferred until the end of the transaction.

Discover More
Card Puncher Data Processing
JPA - Entity (Operations|Lifecycle)

All entity operations are described in the chapter 3: Entity Operations of the specification The following operations are possible: PERSIST, MERGE, REMOVE, REFRESH, DETACH FLUSH This...
One To Many Hello Data Model
JPA - How to define a @One-to-Many relationship ?

To define a one-to-many relationship, the following annotation is used @OneToMany. The Interface with parameters and default values: where: targetEntity is the entity class that is the target...
Card Puncher Data Processing
JPA - Managed Entity

future updates to the entity will be tracked. persistence context The contains() method can be used to determine whether an entity instance is managed in the current persistence context. The...
Card Puncher Data Processing
JPA - Removed Instance

A managed entity instance becomes removed by: invoking the remove method on it or by cascading the remove operation. If X is a: new entity, it is ignored by the remove operation. However, the...

Share this page:
Follow us:
Task Runner