/**
*
* 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.airavata.registry.core.repositories;
import org.apache.airavata.registry.core.utils.JPAUtils;
import org.apache.airavata.registry.core.utils.ObjectMapperSingleton;
import org.dozer.Mapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.persistence.Query;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public abstract class AbstractRepository<T, E, Id> {
private final static Logger logger = LoggerFactory.getLogger(AbstractRepository.class);
private Class<T> thriftGenericClass;
private Class<E> dbEntityGenericClass;
public AbstractRepository(Class<T> thriftGenericClass, Class<E> dbEntityGenericClass) {
this.thriftGenericClass = thriftGenericClass;
this.dbEntityGenericClass = dbEntityGenericClass;
}
public T create(T t) {
return update(t);
}
public T update(T t) {
Mapper mapper = ObjectMapperSingleton.getInstance();
E entity = mapper.map(t, dbEntityGenericClass);
E persistedCopy = JPAUtils.execute(entityManager -> entityManager.merge(entity));
return mapper.map(persistedCopy, thriftGenericClass);
}
public boolean delete(Id id) {
JPAUtils.execute(entityManager -> {
E entity = entityManager.find(dbEntityGenericClass, id);
entityManager.remove(entity);
return entity;
});
return true;
}
public T get(Id id) {
E entity = JPAUtils.execute(entityManager -> entityManager
.find(dbEntityGenericClass, id));
Mapper mapper = ObjectMapperSingleton.getInstance();
return mapper.map(entity, thriftGenericClass);
}
public List<T> select(String query, int limit, int offset) {
List resultSet = (List) JPAUtils.execute(entityManager -> entityManager.createQuery(query).setFirstResult(offset)
.setMaxResults(offset).getResultList());
Mapper mapper = ObjectMapperSingleton.getInstance();
List<T> gatewayList = new ArrayList<>();
resultSet.stream().forEach(rs -> gatewayList.add(mapper.map(rs, thriftGenericClass)));
return gatewayList;
}
public List<T> select(String query, int limit, int offset, Map<String, Object> queryParams) {
List resultSet = (List) JPAUtils.execute(entityManager -> {
Query jpaQuery = entityManager.createQuery(query);
for (Map.Entry<String, Object> entry : queryParams.entrySet()) {
jpaQuery.setParameter(entry.getKey(), entry.getValue());
}
return jpaQuery.setFirstResult(offset).setMaxResults(limit).getResultList();
});
Mapper mapper = ObjectMapperSingleton.getInstance();
List<T> gatewayList = new ArrayList<>();
resultSet.stream().forEach(rs -> gatewayList.add(mapper.map(rs, thriftGenericClass)));
return gatewayList;
}
}