Cascade types and behavior in Spring Boot - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify a cascade type that propagates all operations.

Spring Boot

@OneToMany(cascade = CascadeType.[1])
private List<Order> orders;

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APERSIST

BREMOVE

CALL

DMERGE

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing only one operation like PERSIST or REMOVE when ALL is needed.

The ALL cascade type propagates all operations (persist, merge, remove, refresh, detach) to the related entities.

2fill in blank

medium

Complete the code to cascade only the persist operation to child entities.

Spring Boot

@OneToMany(cascade = CascadeType.[1])
private Set<Item> items;

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ADETACH

BREFRESH

CREMOVE

DPERSIST

Attempts:

3 left

💡 Hint

Common Mistakes

Using REMOVE which deletes entities instead of saving them.

The PERSIST cascade type ensures that when the parent entity is saved, the child entities are also saved automatically.

3fill in blank

hard

Fix the error in the cascade configuration to allow merging child entities.

Spring Boot

@OneToMany(cascade = CascadeType.[1])
private List<Comment> comments;

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AMERGE

BREFRESH

CREMOVE

DPERSIST

Attempts:

3 left

💡 Hint

Common Mistakes

Using PERSIST which only saves new entities, not updates.

The MERGE cascade type allows updates to child entities when the parent entity is merged.

4fill in blank

hard

Fill both blanks to cascade persist and remove operations.

Spring Boot

@OneToMany(cascade = {CascadeType.[1], CascadeType.[2])
private Set<Tag> tags;

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APERSIST

BREMOVE

CDETACH

DREFRESH

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up cascade types that do not save or delete entities.

Using both PERSIST and REMOVE cascade types ensures child entities are saved and deleted along with the parent.

5fill in blank

hard

Fill all three blanks to cascade merge, refresh, and detach operations.

Spring Boot

@OneToMany(cascade = {CascadeType.[1], CascadeType.[2], CascadeType.[3])
private List<Attachment> attachments;

Drag options to blanks, or click blank then click option'

AMERGE

BREFRESH

CDETACH

DPERSIST

Attempts:

3 left

💡 Hint

Common Mistakes

Including PERSIST when only merge, refresh, and detach are needed.

The cascade types MERGE, REFRESH, and DETACH control updating, reloading, and detaching child entities respectively.