JPA @Query to handle null parameter value and like %?1%

Question

@Query("select t from Menu t where (?1 is null or t.name like %?1%)")

in my case , this can handle null values, but when i have no null value like %?1% no effect , there is no way to do a fuzzy search .

I would like to have code=4 and find

4
546
345

but only find

4

Any help?

Answer 1

The feature you are trying to use got introduced with ticket DATAJPA-292 and in the comments you'll find the limitation that is causing problems to you:

One thing to note is that references to the same parameter can only be equipped with the very same LIKE expression. The following query snippet is invalid:

 … firstname like %?1 and lastname like ?1% 

As we can only bind a single parameter once.

To get around that limitation you should be able to use SpEL expressions. Try the following:

@Query("select t from Menu t where (?1 is null or t.name like ?#{'%'+[0]+'%'})")

Not 100% sure, but I think this should work as well because it basically considers the to bind instances as separate parameters:

@Query("select t from Menu t where (?1 is null or t.name like %?#{[0]}%)")