/*******************************************************************************
* * Copyright 2012 Impetus Infotech.
* *
* * 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 com.impetus.kundera.client.cassandra.crud;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.Query;
import junit.framework.Assert;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.impetus.client.crud.PersonCassandra;
import com.impetus.kundera.client.Client;
import com.impetus.kundera.client.cassandra.persistence.CassandraCli;
import com.impetus.kundera.persistence.api.Batcher;
/**
* Batch processing test case for cassandra.
*
* @author vivek.mishra
*
*/
public class CassandraBatchProcessorTest
{
/**
*
*/
private static final String PERSISTENCE_UNIT = "ds_pu";
/** The emf. */
private EntityManagerFactory emf;
/** The em. */
private EntityManager em;
protected Map propertyMap = null;
/**
* @throws java.lang.Exception
*/
@Before
public void setUp() throws Exception
{
// cassandraSetUp();
CassandraCli.cassandraSetUp();
// CassandraCli.initClient();
CassandraCli.createKeySpace("KunderaExamples");
if (propertyMap == null)
{
propertyMap = new HashMap();
propertyMap.put("kundera.batch.size", "5");
}
emf = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT, propertyMap);
em = emf.createEntityManager();
}
@Test
public void onBatch()
{
int counter = 0;
List<PersonCassandra> rows = prepareData(10);
for (PersonCassandra entity : rows)
{
em.persist(entity);
// check for implicit flush.
if (++counter == 5)
{
Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
Batcher client = (Batcher) clients.get(PERSISTENCE_UNIT);
Assert.assertEquals(5, client.getBatchSize());
em.clear();
for (int i = 0; i < 5; i++)
{
// assert on each batch size record
Assert.assertNotNull(em.find(PersonCassandra.class, rows.get(i).getPersonId()));
// as batch size is 5.
Assert.assertNull(em.find(PersonCassandra.class, rows.get(6).getPersonId()));
}
// means implicit flush must happen
}
}
// flush all on close.
// explicit flush on close
em.clear();
em.close();
em = emf.createEntityManager();
String sql = " Select p from PersonCassandra p";
Query query = em.createQuery(sql);
List<PersonCassandra> results = query.getResultList();
Assert.assertNotNull(results);
Assert.assertEquals(10, results.size());
}
/**
* @throws java.lang.Exception
*/
@After
public void tearDown() throws Exception
{
em.close();
emf.close();
CassandraCli.dropKeySpace("KunderaExamples");
}
private List<PersonCassandra> prepareData(Integer noOfRecords)
{
List<PersonCassandra> persons = new ArrayList<PersonCassandra>();
for (int i = 1; i <= noOfRecords; i++)
{
PersonCassandra o = new PersonCassandra();
o.setPersonId(i + "");
o.setPersonName("vivek" + i);
o.setAge(10);
persons.add(o);
}
return persons;
}
}