完全动态地创建JPA标准

只要您

T

Comparable

greaterThan

public class Container<T extends Comparable<T>> {     ...    public <R> Predicate toPredicate(CriteriaBuilder cb, Root<R> root) {        ...        if (">".equals(operation) { return cb.greaterThan(root.<T>get(fieldId), value);        }         ...    }    ...}