at.irian.demo.jsfatwork.repository.jpa.JpaUserRepository.java Source code

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Here is the source code for at.irian.demo.jsfatwork.repository.jpa.JpaUserRepository.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 at.irian.demo.jsfatwork.repository.jpa;

import at.irian.demo.jsfatwork.domain.AbstractDomainObject;
import static at.irian.demo.jsfatwork.domain.DomainQueryDetails.FIND_USER_BY_NAME;
import static at.irian.demo.jsfatwork.domain.DomainQueryDetails.PARAMETER_USER;
import at.irian.demo.jsfatwork.domain.User;
import at.irian.demo.jsfatwork.repository.jpa.AbstractGenericJpaRepository;
import at.irian.demo.jsfatwork.repository.UserRepository;
import org.springframework.stereotype.Repository;

import javax.persistence.Query;
import java.util.List;

/**
 * @author JSF@Work Project Team
 */
@Repository
public class JpaUserRepository extends AbstractGenericJpaRepository<User> implements UserRepository {
    protected Class<? extends AbstractDomainObject> getEntityClass() {
        return User.class;
    }

    public User createNewEntity() {
        return new User();
    }

    public User loadUser(String userName) {
        Query query = this.entityManager.createNamedQuery(FIND_USER_BY_NAME);
        query.setParameter(PARAMETER_USER, userName);

        List result = query.getResultList(); //don't use getSingleResult()
        if (result != null && result.size() == 1) {
            return (User) result.iterator().next();
        }
        return null;
    }
}