Really dynamic JPA CriteriaBuilder

Question

I need to create a \"real\" dynamic JPA CriteriaBuilder. I get an Map with the statements. It looks like:

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Answer 1

One option is to use the fact that method with variable number of arguments can take an array:

query.where(predicates.toArray(new Predicate[predicates.size()])); 

Alternatively, you can combine them into a single predicate (note that if you don't do it, you don't need to create a conjunction as in your example);:

Predicate where = cb.conjunction();
while (column.hasNext()) {
    ...
    where = cb.and(where, cb.equal(userRoot.get(colIndex), colValue));
}

query.where(where);