/**
* 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.
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package org.apache.camel.component.jpa;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceException;
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.Customer;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.impl.SimpleRegistry;
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.transaction.TransactionStatus;
import org.springframework.transaction.support.TransactionCallback;
import org.springframework.transaction.support.TransactionTemplate;
import static org.apache.camel.util.ServiceHelper.startServices;
public class JpaWithNamedQueryAndParametersTest extends Assert {
protected static final Logger LOG = LoggerFactory.getLogger(JpaWithNamedQueryAndParametersTest.class);
protected DefaultCamelContext camelContext;
protected ProducerTemplate template;
protected JpaEndpoint endpoint;
protected EntityManager entityManager;
protected TransactionTemplate transactionTemplate;
protected Consumer consumer;
protected Exchange receivedExchange;
protected CountDownLatch latch = new CountDownLatch(1);
protected String entityName = Customer.class.getName();
protected String queryText = "select o from " + entityName + " o where o.name like 'Willem'";
@Test
public void testProducerInsertsIntoDatabaseThenConsumerFiresMessageExchange() throws Exception {
transactionTemplate.execute(new TransactionCallback<Object>() {
public Object doInTransaction(TransactionStatus status) {
entityManager.joinTransaction();
// lets delete any exiting records before the test
entityManager.createQuery("delete from " + entityName).executeUpdate();
// now lets create a dummy entry
Customer dummy = new Customer();
dummy.setName("Test");
entityManager.persist(dummy);
return null;
}
});
List<?> results = entityManager.createQuery(queryText).getResultList();
assertEquals("Should have no results: " + results, 0, results.size());
// lets produce some objects
template.send(endpoint, new Processor() {
public void process(Exchange exchange) {
Customer customer = new Customer();
customer.setName("Willem");
exchange.getIn().setBody(customer);
}
});
// now lets assert that there is a result
results = entityManager.createQuery(queryText).getResultList();
assertEquals("Should have results: " + results, 1, results.size());
Customer customer = (Customer)results.get(0);
assertEquals("name property", "Willem", customer.getName());
// 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();
assertTrue(latch.await(10, TimeUnit.SECONDS));
assertReceivedResult(receivedExchange);
JpaConsumer jpaConsumer = (JpaConsumer) consumer;
assertURIQueryOption(jpaConsumer);
}
protected void assertReceivedResult(Exchange exchange) {
assertNotNull(exchange);
Customer result = exchange.getIn().getBody(Customer.class);
assertNotNull("Received a POJO", result);
assertEquals("name property", "Willem", result.getName());
}
protected void assertURIQueryOption(JpaConsumer jpaConsumer) {
assertEquals("findAllCustomersWithName", jpaConsumer.getNamedQuery());
}
@Before
public void setUp() throws Exception {
camelContext = new DefaultCamelContext();
SimpleRegistry registry = new SimpleRegistry();
Map<String, Object> params = new HashMap<String, Object>();
params.put("custName", "Willem");
// bind the params
registry.put("params", params);
camelContext.setRegistry(registry);
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;
transactionTemplate = endpoint.createTransactionTemplate();
entityManager = endpoint.createEntityManager();
}
protected String getEndpointUri() {
return "jpa://" + Customer.class.getName() + "?consumer.namedQuery=findAllCustomersWithName&consumer.parameters=#params";
}
@After
public void tearDown() throws Exception {
ServiceHelper.stopServices(consumer, template, camelContext);
}
}