Example usage for javax.persistence.criteria CriteriaBuilder literal

Introduction

In this page you can find the example usage for javax.persistence.criteria CriteriaBuilder literal.

Prototype

<T> Expression<T> literal(T value);

Source Link

Document

Create an expression for a literal.

Usage

From source file:org.apache.openmeetings.data.user.UserManager.java

/**
 * suche eines Bentzers// www .  j av  a2s .  com
 * 
 * @param user_level
 * @param searchstring
 * @param max
 * @param start
 * @return
 */
public List<User> searchUser(long user_level, String searchcriteria, String searchstring, int max, int start,
        String orderby, boolean asc) {
    if (authLevelUtil.checkAdminLevel(user_level)) {
        try {
            CriteriaBuilder cb = em.getCriteriaBuilder();
            CriteriaQuery<User> cq = cb.createQuery(User.class);
            Root<User> c = cq.from(User.class);
            Expression<String> literal = cb.literal("%" + searchstring + "%");
            Path<String> path = c.get(searchcriteria);
            Predicate predicate = cb.like(path, literal);
            Predicate condition = cb.notEqual(c.get("deleted"), true);
            cq.where(condition, predicate);
            cq.distinct(asc);
            if (asc) {
                cq.orderBy(cb.asc(c.get(orderby)));
            } else {
                cq.orderBy(cb.desc(c.get(orderby)));
            }
            TypedQuery<User> q = em.createQuery(cq);
            q.setFirstResult(start);
            q.setMaxResults(max);
            List<User> contactsZ = q.getResultList();
            return contactsZ;
        } catch (Exception ex2) {
            log.error("searchUser", ex2);
        }
    }
    return null;
}

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