I'm using Criteria API to build named queries using filters. It works on normal String comparisons but when filtering on UUID it throws the following error:
org.springframework.dao.InvalidDataAccessApiUsageException: Parameter value [67279329-5096-4196-9E73-748B33122CE2] did not match expected type [java.util.UUID (n/a)]; nested exception is java.lang.IllegalArgumentException: Parameter value [67279329-5096-4196-9E73-748B33122CE2] did not match expected type [java.util.UUID (n/a)]
There are several questions addressing this issue but none of them worked, I tried the following:
@Column(name = "id", updatable = false, nullable = false)
to the entity field@Type(type="org.hibernate.type.UUIDCharType")
to the entity field@Type(type="uuid-char")
to the entity fieldFoo entity:
@Entity
//lombok stuff
public class Foo {
@Id
private UUID id;
private String name;
//...
}
SQL Variant:
CREATE TABLE foo
(
id UUID NOT NULL PRIMARY KEY,
name VARCHAR NOT NULL,
...
);
FooController:
@GetMapping(value = "/foo")
public ResponseEntity<List<Foo>> findFoos(@RequestParam Map<String, String> filterArguments) {
FooFilter filter = filterMapper.map(filterArguments);
FooSpecification spec = new FooSpecification(filter);
List<Foo> foos = fooRepo.findAll(spec);
//...
}
FooSpecification:
public class FooSpecification extends SpecificationHelper implements Specification<Foo> {
private final FooFilter filter;
public FooSpecification(FooFilter filter) {
this.filter = filter;
}
@Override
public Predicate toPredicate(Root<Foo> root, CriteriaQuery<?> query, CriteriaBuilder criteriaBuilder) {
Predicate predicate = null;
predicate = createIdPredicate(root, filter, criteriaBuilder, predicate);
predicate = createNamePredicate(root, filter, criteriaBuilder, predicate);
// ...
return predicate;
}
private Predicate createIdPredicate(Root<Foo> foo, FooFilter filter, CriteriaBuilder cb, Predicate predicate) {
Predicate returnPredicate = predicate;
if (StringUtils.isNotBlank(filter.getId()))
returnPredicate = addAndPredicate(cb, predicate, cb.like(cb.upper(foo.get("id")), "%" + filter.getId().toUpperCase() + "%"));
return returnPredicate;
}
private Predicate createNamePredicate(Root<Foo> foo, FooFilter filter, CriteriaBuilder cb, Predicate predicate) {
Predicate returnPredicate = predicate;
if (StringUtils.isNotBlank(filter.getName()))
returnPredicate = addAndPredicate(cb, predicate, cb.like(cb.upper(foo.get("name")), "%" + filter.getName().toUpperCase() + "%"));
return returnPredicate;
}
}
addAndPredicate
is a simple helper method that just uses criteriaBuilder.and(predicate,newPredicate)
FooFilter
only has String fields
I fixed the issue using typecasting provided by the Criteria API.
Before:
addAndPredicate(..., ..., cb.like(cb.upper(foo.get("id")), ...));
After:
addAndPredicate(..., ..., cb.like(cb.upper(foo.get("id").as(String.class)), ...));
From: https://docs.oracle.com/javaee/6/api/javax/persistence/criteria/Expression.html#as(java.lang.Class)
<X> Expression<X> as(java.lang.Class<X> type)
Perform a typecast upon the expression, returning a new expression object. This method does not cause type conversion: the runtime type is not changed. Warning: may result in a runtime failure.