Path<Y> get(
String attributeName
)
Create a path corresponding to the referenced attribute.
Note: Applications using the string-based API may need to specify the type resulting from the get
operation in order to avoid the use of Path
variables.
For example: CriteriaQuery<Person> q = cb.createQuery(Person.class); Root<Person> p = q.from(Person.class); q.select(p) .where(cb.isMember("joe", p.<Set<String>>get("nicknames"))); rather than: CriteriaQuery<Person> q = cb.createQuery(Person.class); Root<Person> p = q.from(Person.class); Path<Set<String>> nicknames = p.get("nicknames"); q.select(p) .where(cb.isMember("joe", nicknames));
- Parameters:
attributeName
- name of the attribute
- Return:
- path corresponding to the referenced attribute
- Throws:
- IllegalStateException - if invoked on a path that corresponds to a basic type
- IllegalArgumentException - if attribute of the given name does not otherwise exist
- Since:
- JPA 2.0