java - JPA 2.0 Eclipse Link -

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i have code

@column(updatable=false) @enumerated(enumtype.string) private examtype examtype;

however, can still change value when update via merge. why?

ok. first, if want examtype column included in sql update statements, shouldn't mark updatable=false. being said, appears updatable=false ignored when not used in combination insertable=false that's bug in eclipselink (bug 243301), that's not jpa says. set true or remove it.

secondly, following entity:

@entity public class myentity {     @id     @generatedvalue     private long id;      @column(updatable = true)     @enumerated(enumtype.string)     private examtype examtype;      ... }

the following test method runs fine eclipselink:

@test public void testupdateofenum() {     myentity e = new myentity();     e.setexamtype(examtype.a);      em.persist(e);     em.flush();      assertnotnull(e.getid());     assertequals(examtype.a, e.getexamtype());      e.setexamtype(examtype.b);     em.merge(e);     em.flush();      em.refresh(e); // ensure assert against value read db     assertequals(examtype.b, e.getexamtype()); }

below generated sql statements:

 insert entitywithenum (id, examtype) values (?, ?)     bind => [1, a] update entitywithenum set examtype = ? (id = ?)     bind => [b, 1] select id, examtype entitywithenum (id = ?)     bind => [1]

honestly, bug on such elementary thing in eclipselink unlikely, more mistake on side if may :)

update: after reading comment op, think got question (which totally unclear honest): op doesn't want examtype updated exact opposite of initial understanding. op facing bug 243301 (fix released in 2.0.2):

eclipselink allows mappings writable or read-only. mappings marked both insertable=false , updatable=false set read-only.

another workaround described in bug 294803 (that previous 1 duplicates).


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