NamespaceIamRoleAuthorizationDaoImpl.java

/*
* Copyright 2015 herd contributors
*
* 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.finra.herd.dao.impl;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Join;
import javax.persistence.criteria.Root;

import org.springframework.stereotype.Repository;

import org.finra.herd.dao.NamespaceIamRoleAuthorizationDao;
import org.finra.herd.model.jpa.NamespaceEntity;
import org.finra.herd.model.jpa.NamespaceEntity_;
import org.finra.herd.model.jpa.NamespaceIamRoleAuthorizationEntity;
import org.finra.herd.model.jpa.NamespaceIamRoleAuthorizationEntity_;

@Repository
public class NamespaceIamRoleAuthorizationDaoImpl extends AbstractHerdDao implements NamespaceIamRoleAuthorizationDao
{
    @PersistenceContext
    private EntityManager entityManager;

    @Override
    public List<NamespaceIamRoleAuthorizationEntity> getNamespaceIamRoleAuthorizations(NamespaceEntity namespaceEntity)
    {
        CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
        CriteriaQuery<NamespaceIamRoleAuthorizationEntity> query = criteriaBuilder.createQuery(NamespaceIamRoleAuthorizationEntity.class);
        Root<NamespaceIamRoleAuthorizationEntity> root = query.from(NamespaceIamRoleAuthorizationEntity.class);
        Join<NamespaceIamRoleAuthorizationEntity, NamespaceEntity> namespaceJoin = root.join(NamespaceIamRoleAuthorizationEntity_.namespace);
        if (namespaceEntity != null)
        {
            query.where(criteriaBuilder.equal(root.get(NamespaceIamRoleAuthorizationEntity_.namespace), namespaceEntity));
        }
        query.orderBy(criteriaBuilder.asc(namespaceJoin.get(NamespaceEntity_.code)), criteriaBuilder.asc(root.get(
            NamespaceIamRoleAuthorizationEntity_.iamRoleName)));
        return entityManager.createQuery(query).getResultList();
    }
}