content: /*
   * 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.janusgraph.diskstorage.rdbms.dao;
  
  import org.janusgraph.diskstorage.rdbms.RdbmsTransaction;
  import org.janusgraph.diskstorage.rdbms.entity.JanusKey;
  
  import javax.persistence.NoResultException;
  
  /**
   * DAO to access Key entities stored in RDBMS
   *
   */
  public class JanusKeyDao extends BaseDao<JanusKey> {
      public JanusKeyDao(RdbmsTransaction trx) {
          super(trx);
      }
  
      public Long getIdByStoreIdAndName(long storeId, byte[] name) {
          try {
              Object result = em.createNamedQuery("JanusKey.getIdByStoreIdAndName")
                                .setParameter("storeId", storeId)
                                .setParameter("name", name)
                                .getSingleResult();
  
              return toLong(result);
          } catch (NoResultException excp) {
              // ignore
          }
  
          return null;
      }
  }
  