PERSIST MERGE cannot be used in @ManyToMany [DATAJPA-1684]

[spring-projects-issues]

ywuliu opened DATAJPA-1684 and commented

Column like:

@ManyToMany(fetch = FetchType.EAGER,
cascade = {
CascadeType.PERSIST,
CascadeType.MERGE
}
)
@JoinTable(name = "post_tags",
joinColumns = { @JoinColumn(name = "post_id") },
inverseJoinColumns = { @JoinColumn(name = "tag_id") })
private Set<Tag> tags = new HashSet<>();

 

 

Here, we have new tag and exist tag in tags, no matter what we specify cascade ( a: ALL; b: PERSIST, MERGE; c: PERSIST, d: MERGE) , we get error error anyway either when we create or update

It only work when we remove Cascade, then, we HAVE TO search in DB  and build new Tag in DB first. 

 

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Affects: 2.2.4 (Moore SR4)

[spring-projects-issues]

Jens Schauder commented

Please provide a reproducer, i.e. a tiny project reproducing the problem.

Please also include a full stack trace.

So far this looks more like a mapping error or a bug in the JPA implementation you use

[spring-projects-issues]

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[spring-projects-issues]

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