csns.model.academics.dao.jpa.ProjectDaoImpl.java Source code

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Here is the source code for csns.model.academics.dao.jpa.ProjectDaoImpl.java

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/*
 * This file is part of the CSNetwork Services (CSNS) project.
 * 
 * Copyright 2012, Chengyu Sun (csun@calstatela.edu).
 * 
 * CSNS is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 * 
 * CSNS is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
 * more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with CSNS. If not, see http://www.gnu.org/licenses/agpl.html.
 */
package csns.model.academics.dao.jpa;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;

import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

import csns.model.academics.Department;
import csns.model.academics.Project;
import csns.model.academics.dao.ProjectDao;

@Repository
public class ProjectDaoImpl implements ProjectDao {

    @PersistenceContext
    private EntityManager entityManager;

    @Override
    public Project getProject(Long id) {
        return entityManager.find(Project.class, id);
    }

    @Override
    public List<Project> getProjects(Department department, int year) {
        String query = "from Project where department = :department "
                + "and year = :year and deleted = false order by title asc";

        return entityManager.createQuery(query, Project.class).setParameter("department", department)
                .setParameter("year", year).getResultList();
    }

    @Override
    public List<Integer> getProjectYears(Department department) {
        String query = "select distinct year from Project " + "where department = :department order by year desc";

        return entityManager.createQuery(query, Integer.class).setParameter("department", department)
                .getResultList();
    }

    @Override
    public List<Project> searchProjects(String term, int maxResults) {
        TypedQuery<Project> query = entityManager.createNamedQuery("project.search", Project.class);
        if (maxResults > 0)
            query.setMaxResults(maxResults);
        return query.setParameter("term", term).getResultList();
    }

    @Override
    @Transactional
    @PreAuthorize("authenticated and (principal.faculty or #project.id != null and #project.isMember(principal))")
    public Project saveProject(Project project) {
        return entityManager.merge(project);
    }

}