UserRoleSpecifications.java

/**
 * Copyright 2011 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.bricket.plugin.user_role.repository.impl;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.bricket.plugin.role.domain.Role_;
import org.bricket.plugin.user.domain.User_;
import org.bricket.plugin.user_role.domain.UserRole;
import org.bricket.plugin.user_role.domain.UserRole_;
import org.synyx.hades.domain.Specification;

/**
 * @author Henning Teek
 */
public final class UserRoleSpecifications {
    private UserRoleSpecifications() {
        super();
    }

    public static Specification<UserRole> hasRole(final String role) {
        return new Specification<UserRole>() {
            @Override
            public Predicate toPredicate(Root<UserRole> root, CriteriaQuery<?> query, CriteriaBuilder builder) {
                return builder.equal(root.join(UserRole_.role).get(Role_.name), role);
            }
        };
    }

    public static Specification<UserRole> hasUser(final long userId) {
        return new Specification<UserRole>() {
            @Override
            public Predicate toPredicate(Root<UserRole> root, CriteriaQuery<?> query, CriteriaBuilder builder) {
                return builder.equal(root.join(UserRole_.user).get(User_.id), userId);
            }
        };
    }

    public static Specification<UserRole> hasSystemRole() {
        return new Specification<UserRole>() {
            @Override
            public Predicate toPredicate(Root<UserRole> root, CriteriaQuery<?> query, CriteriaBuilder builder) {
                return builder.isTrue(root.join(UserRole_.role).get(Role_.systemRole));
            }
        };
    }

    public static Specification<UserRole> hasEmailLike(final String email) {
        return new Specification<UserRole>() {
            @Override
            public Predicate toPredicate(Root<UserRole> root, CriteriaQuery<?> query, CriteriaBuilder builder) {
                return builder.like(root.join(UserRole_.user).get(User_.email), email);
            }
        };
    }
}