/**
* 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.camel.component.jpa;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceException;
import org.apache.camel.CamelContext;
import org.apache.camel.Consumer;
import org.apache.camel.Endpoint;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.ProducerTemplate;
import org.apache.camel.examples.MultiSteps;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.util.ServiceHelper;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.orm.jpa.JpaCallback;
import org.springframework.orm.jpa.JpaTemplate;
/**
* @version
*/
public class JpaWithNamedQueryTest extends Assert {
protected static final transient Logger LOG = LoggerFactory.getLogger(JpaWithNamedQueryTest.class);
protected CamelContext camelContext = new DefaultCamelContext();
protected ProducerTemplate template;
protected JpaEndpoint endpoint;
protected TransactionStrategy transactionStrategy;
protected JpaTemplate jpaTemplate;
protected Consumer consumer;
protected Exchange receivedExchange;
protected CountDownLatch latch = new CountDownLatch(1);
protected String entityName = MultiSteps.class.getName();
protected String queryText = "select o from " + entityName + " o where o.step = 1";
@Test
public void testProducerInsertsIntoDatabaseThenConsumerFiresMessageExchange() throws Exception {
transactionStrategy.execute(new JpaCallback() {
public Object doInJpa(EntityManager entityManager) throws PersistenceException {
// lets delete any exiting records before the test
entityManager.createQuery("delete from " + entityName).executeUpdate();
// now lets create a dummy entry
MultiSteps dummy = new MultiSteps("cheese");
dummy.setStep(4);
entityManager.persist(dummy);
return null;
}
});
List results = jpaTemplate.find(queryText);
assertEquals("Should have no results: " + results, 0, results.size());
// lets produce some objects
template.send(endpoint, new Processor() {
public void process(Exchange exchange) {
exchange.getIn().setBody(new MultiSteps("foo@bar.com"));
}
});
// now lets assert that there is a result
results = jpaTemplate.find(queryText);
assertEquals("Should have results: " + results, 1, results.size());
MultiSteps mail = (MultiSteps)results.get(0);
assertEquals("address property", "foo@bar.com", mail.getAddress());
// now lets create a consumer to consume it
consumer = endpoint.createConsumer(new Processor() {
public void process(Exchange e) {
LOG.info("Received exchange: " + e.getIn());
receivedExchange = e;
latch.countDown();
}
});
consumer.start();
boolean received = latch.await(50, TimeUnit.SECONDS);
assertTrue("Did not receive the message!", received);
assertReceivedResult(receivedExchange);
// lets now test that the database is updated
// we need to sleep as we will be invoked from inside the transaction!
Thread.sleep(1000);
transactionStrategy.execute(new JpaCallback() {
@SuppressWarnings("unchecked")
public Object doInJpa(EntityManager entityManager) throws PersistenceException {
// now lets assert that there are still 2 entities left
List<MultiSteps> rows = entityManager.createQuery("select x from MultiSteps x").getResultList();
assertEquals("Number of entities: " + rows, 2, rows.size());
int counter = 1;
for (MultiSteps row : rows) {
LOG.info("entity: " + counter++ + " = " + row);
if (row.getAddress().equals("foo@bar.com")) {
LOG.info("Found updated row: " + row);
assertEquals("Updated row step for: " + row, getUpdatedStepValue(), row.getStep());
} else {
// dummy row
assertEquals("dummy row step for: " + row, 4, row.getStep());
}
}
return null;
}
});
JpaConsumer jpaConsumer = (JpaConsumer) consumer;
assertURIQueryOption(jpaConsumer);
}
protected void assertReceivedResult(Exchange exchange) {
assertNotNull(exchange);
MultiSteps result = exchange.getIn().getBody(MultiSteps.class);
assertNotNull("Received a POJO", result);
assertEquals("address property", "foo@bar.com", result.getAddress());
}
protected int getUpdatedStepValue() {
return 2;
}
protected void assertURIQueryOption(JpaConsumer jpaConsumer) {
assertEquals("step1", jpaConsumer.getNamedQuery());
}
@Before
public void setUp() throws Exception {
template = camelContext.createProducerTemplate();
ServiceHelper.startServices(template, camelContext);
Endpoint value = camelContext.getEndpoint(getEndpointUri());
assertNotNull("Could not find endpoint!", value);
assertTrue("Should be a JPA endpoint but was: " + value, value instanceof JpaEndpoint);
endpoint = (JpaEndpoint)value;
transactionStrategy = endpoint.createTransactionStrategy();
jpaTemplate = endpoint.getTemplate();
}
protected String getEndpointUri() {
return "jpa://" + MultiSteps.class.getName() + "?consumer.namedQuery=step1";
}
@After
public void tearDown() throws Exception {
ServiceHelper.stopServices(consumer, template, camelContext);
}
}