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.apache.camel.component.jpa;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.TimeUnit;
  
  import jakarta.persistence.EntityManager;
  
  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.SendEmail;
  import org.apache.camel.impl.DefaultCamelContext;
  import org.apache.camel.support.service.ServiceHelper;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.transaction.TransactionStatus;
  import org.springframework.transaction.support.TransactionCallback;
  import org.springframework.transaction.support.TransactionTemplate;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public class JpaTest {
      private static final Logger LOG = LoggerFactory.getLogger(JpaTest.class);
      protected CamelContext camelContext = new DefaultCamelContext();
      protected ProducerTemplate template;
      protected JpaComponent component;
      protected JpaEndpoint endpoint;
      protected JpaEndpoint listEndpoint;
      protected EntityManager entityManager;
      protected TransactionTemplate transactionTemplate;
      protected Consumer consumer;
      protected Exchange receivedExchange;
      protected CountDownLatch latch = new CountDownLatch(1);
      protected String entityName = SendEmail.class.getName();
      protected String queryText = "select o from " + entityName + " o";
  
      @Test
      public void testProducerInsertsIntoDatabaseThenConsumerFiresMessageExchange() throws Exception {
          // lets produce some objects
          template.send(endpoint, new Processor() {
              public void process(Exchange exchange) {
                  exchange.getIn().setBody(new SendEmail("foo@bar.com"));
              }
          });
  
          // now lets assert that there is a result
          List<?> results = entityManager.createQuery(queryText).getResultList();
          assertEquals(1, results.size(), "Should have results: " + results);
          SendEmail mail = (SendEmail) results.get(0);
          assertEquals("foo@bar.com", mail.getAddress(), "address property");
  
          // 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;
                  // should have a EntityManager
                  EntityManager entityManager = e.getIn().getHeader(JpaConstants.ENTITY_MANAGER, EntityManager.class);
                  assertNotNull(entityManager, "Should have a EntityManager as header");
                  latch.countDown();
              }
          });
          consumer.start();
  
          assertTrue(latch.await(50, TimeUnit.SECONDS));
  
          assertNotNull(receivedExchange);
          SendEmail result = receivedExchange.getIn().getBody(SendEmail.class);
          assertNotNull(result, "Received a POJO");
          assertEquals("foo@bar.com", result.getAddress(), "address property");
      }
  
      @Test
      public void testProducerInsertsList() {
          // lets produce some objects
          template.send(listEndpoint, new Processor() {
              public void process(Exchange exchange) {
                  // use a list
                  List<Object> list = new ArrayList<>();
                  list.add(new SendEmail("foo@bar.com"));
                  list.add(new SendEmail("foo2@bar.com"));
                  exchange.getIn().setBody(list);
              }
          });
  
          // now lets assert that there is a result
          List<?> results = entityManager.createQuery(queryText).getResultList();
          assertEquals(2, results.size(), "Should have results: " + results);
          SendEmail mail = (SendEmail) results.get(0);
          assertEquals("foo@bar.com", mail.getAddress(), "address property");
          assertNotNull(mail.getId(), "id");
  
          SendEmail mail2 = (SendEmail) results.get(1);
          assertEquals("foo2@bar.com", mail2.getAddress(), "address property");
          assertNotNull(mail2.getId(), "id");
      }
  
      @BeforeEach
      public void setUp() {
          camelContext.start();
          template = camelContext.createProducerTemplate();
  
          setUpComponent();
  
          Endpoint value = camelContext.getEndpoint(getEndpointUri());
          assertNotNull(value, "Could not find endpoint!");
          assertTrue(value instanceof JpaEndpoint, "Should be a JPA endpoint but was: " + value);
          endpoint = (JpaEndpoint) value;
  
          listEndpoint = camelContext.getEndpoint(getEndpointUri() + "&entityType=java.util.List", JpaEndpoint.class);
  
          if (endpoint.getTransactionStrategy() instanceof DefaultTransactionStrategy strategy) {
              transactionTemplate = strategy.getTransactionTemplate();
          }
          entityManager = endpoint.getEntityManagerFactory().createEntityManager();
  
          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();
                  return null;
              }
          });
  
          List<?> results = entityManager.createQuery(queryText).getResultList();
          assertEquals(0, results.size(), "Should have no results: " + results);
      }
  
      protected String getEndpointUri() {
          return "jpa://" + SendEmail.class.getName();
      }
  
      protected void setUpComponent() {
          // no set up in this test
      }
  
      @AfterEach
      public void tearDown() {
          ServiceHelper.stopService(consumer, template);
          camelContext.stop();
      }
  }
  