Question

I want to write a select statement but can’t figure out how to write the where clause…

My code:

CriteriaQuery query = entityManager.getCriteriaBuilder().createQuery();
query.select(query.from(SecureMessage.class)).where();

This is within a method that I am passing a string to. I want to fetch only the rows that match the value of the string that Im passing to the method.

Answer 1

As I understand, the method parameter should be the parameter of the query.

So, should looks like:

Query query = entityManager.getCriteriaBuilder().createQuery("from SecureMessage sm where sm.someField=:arg1");
query.setParameter("arg1", arg1);

where arg1 – your method String parameter