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   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
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   *
   *        http://www.apache.org/licenses/LICENSE-2.0
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  package org.apache.causeway.testdomain.jpa;
  
  import jakarta.inject.Inject;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  import org.springframework.stereotype.Component;
  import org.springframework.transaction.annotation.Propagation;
  import org.springframework.transaction.annotation.Transactional;
  
  import org.apache.causeway.applib.services.repository.RepositoryService;
  import org.apache.causeway.testdomain.jpa.entities.JpaBook;
  import org.apache.causeway.testdomain.jpa.entities.JpaInventory;
  
  @Component
  public class JpaInventoryDao {
  
      @Inject private RepositoryService repositoryService;
  
      @Transactional(propagation = Propagation.REQUIRES_NEW)
      public void addBook_havingIsbnA_usingRepositoryService() {
          var inventories = repositoryService.allInstances(JpaInventory.class);
          assertEquals(1, inventories.size());
  
          var inventory = inventories.get(0);
          assertNotNull(inventory);
  
          // add a conflicting book (unique ISBN violation)
          inventory.getProducts()
          .add(JpaBook.of("Sample Book-1", "A sample book for testing.", 39., "Sample Author", "ISBN-A",
                  "Sample Publisher"));
      }
  
  }
  