/*
    * 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 org.apache.syncope.core.persistence.jpa.dao;
  
  import javax.persistence.NoResultException;
  import javax.persistence.TypedQuery;
  import org.apache.syncope.core.persistence.api.dao.OIDCJWKSDAO;
  import org.apache.syncope.core.persistence.api.entity.am.OIDCJWKS;
  import org.apache.syncope.core.persistence.jpa.entity.am.JPAOIDCJWKS;
  import org.springframework.transaction.annotation.Transactional;
  
  public class JPAOIDCJWKSDAO extends AbstractDAO<OIDCJWKS> implements OIDCJWKSDAO {
  
      @Transactional(readOnly = true)
      @Override
      public OIDCJWKS get() {
          try {
              TypedQuery<OIDCJWKS> query = entityManager().
                      createQuery("SELECT e FROM " + JPAOIDCJWKS.class.getSimpleName() + " e", OIDCJWKS.class);
              return query.getSingleResult();
          } catch (final NoResultException e) {
              LOG.debug(e.getMessage());
          }
          return null;
      }
  
      @Override
      public OIDCJWKS save(final OIDCJWKS jwks) {
          return entityManager().merge(jwks);
      }
  
      @Override
      public void delete() {
          entityManager().
                  createQuery("DELETE FROM " + JPAOIDCJWKS.class.getSimpleName()).
                  executeUpdate();
      }
  }