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   * 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 jakarta.persistence.EntityManager;
  
  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.support.SimpleRegistry;
  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 JpaWithNamedQueryAndParametersTest {
  
      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(0, results.size(), "Should have no results: " + results);
  
          // lets produce some objects
          template.send("jpa://" + Customer.class.getName(), 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(1, results.size(), "Should have results: " + results);
          Customer customer = (Customer) results.get(0);
          assertEquals("Willem", customer.getName(), "name 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;
                  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(result, "Received a POJO");
          assertEquals("Willem", result.getName(), "name property");
      }
  
      protected void assertURIQueryOption(JpaConsumer jpaConsumer) {
          assertEquals("findAllCustomersWithName", jpaConsumer.getNamedQuery());
      }
  
      @BeforeEach
      public void setUp() {
          camelContext = new DefaultCamelContext();
          SimpleRegistry registry = new SimpleRegistry();
          Map<String, Object> params = new HashMap<>();
          params.put("custName", "Willem");
          // bind the params
          registry.bind("params", params);
          camelContext.getCamelContextExtension().setRegistry(registry);
  
          camelContext.start();
  
          template = camelContext.createProducerTemplate();
  
          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;
  
          if (endpoint.getTransactionStrategy() instanceof DefaultTransactionStrategy strategy) {
              transactionTemplate = strategy.getTransactionTemplate();
          }
          entityManager = endpoint.getEntityManagerFactory().createEntityManager();
      }
  
      protected String getEndpointUri() {
          return "jpa://" + Customer.class.getName() + "?namedQuery=findAllCustomersWithName&parameters=#params";
      }
  
      @AfterEach
      public void tearDown() {
          ServiceHelper.stopService(consumer, template);
          camelContext.stop();
      }
  }
  