Examples of javax.jdo.PersistenceManager.detachCopy()

javax.jdo.PersistenceManager.detachCopy()
Detach the specified instance from the PersistenceManager. The flags for detachment (DETACH_LOAD_FIELDS and DETACH_UNLOAD_FIELDS) and the active fetch groups determine the scope of fetching for the graph of instances reachable from the pc parameter. The state of fields in the affected instances is as specified by the FetchPlan. @param pc the instance to detach @return the detached instance @see #detachCopyAll(Object[]) @since 2.0

    pm.makePersistent(parent);
    pm.currentTransaction().commit();
    logger.log(BasicLevel.DEBUG, "FG: " + fp.getGroups());
    try {
      pm.currentTransaction().begin();
      Person detachedParent = (Person) pm.detachCopy(parent);
      logger.log(BasicLevel.DEBUG, "Name can be accessed: " + detachedParent.getName());
      logger.log(BasicLevel.DEBUG, "Age can be accessed: " + detachedParent.getAge());
      logger.log(BasicLevel.DEBUG, "Address can be accessed: " + detachedParent.getAddress().toString());
      assertEquals(parent.getName(), detachedParent.getName());
      assertEquals(parent.getAge(), detachedParent.getAge());

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        {
            PersistenceManager pm = pmf.getPersistenceManager();
            pm.getFetchPlan().setGroup("bookInfo");
            pm.detachCopy(pm.getObjectById(Book.class, new Long(0)));
            pm.close();
        }


        {
            Collection books = loadNDetachBooks("shortTitle", true, 0, Integer.MAX_VALUE);

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    FetchPlan f = pm.getFetchPlan();
    logger.log(BasicLevel.DEBUG, "FG: " + f.getGroups());
    
    try{
      pm.currentTransaction().begin();
      Person detachedParent = (Person) pm.detachCopy(parent);
      logger.log(BasicLevel.DEBUG, "All fields can be accessed: " + detachedParent.toString());
      assertEquals(parent.getName(), detachedParent.getName());
      assertEquals(parent.getAge(), detachedParent.getAge());
      assertEquals(parent.getAddress().getCity(), detachedParent.getAddress().getCity());
      assertEquals(parent.getAddress().getCountry().getCode(), detachedParent.getAddress().getCountry().getCode());

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    FetchPlan f = pm.getFetchPlan();
    logger.log(BasicLevel.DEBUG, "FG: " + f.getGroups());
    
    try{    
      pm.currentTransaction().begin();
      Person detachedParent = (Person) pm.detachCopy(parent);
      logger.log(BasicLevel.DEBUG, "Name can be accessed: " + detachedParent.getName());
      logger.log(BasicLevel.DEBUG, "Age can be accessed: " + detachedParent.getAge());
      logger.log(BasicLevel.DEBUG, "Address can be accessed: " + detachedParent.getAddress().toString());
      assertEquals(parent.getName(), detachedParent.getName());
      assertEquals(parent.getAge(), detachedParent.getAge());

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    FetchPlan f = pm.getFetchPlan();
    logger.log(BasicLevel.DEBUG, "FG: " + f.getGroups());
    
    try{  
      pm.currentTransaction().begin();
      Person detachedParent = (Person) pm.detachCopy(parent);
      logger.log(BasicLevel.DEBUG, "Name can be accessed: " + detachedParent.getName());
      logger.log(BasicLevel.DEBUG, "Age can be accessed: " + detachedParent.getAge());
      assertEquals(parent.getName(), detachedParent.getName());
      assertEquals(parent.getAge(), detachedParent.getAge());
      logger.log(BasicLevel.DEBUG, "Address should not be accessed: " + detachedParent.getAddress());

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    FetchPlan f = pm.getFetchPlan();
    logger.log(BasicLevel.DEBUG, "FG: " + f.getGroups());
    
    try{
      pm.currentTransaction().begin();
      Person detachedParent = (Person) pm.detachCopy(parent);
      logger.log(BasicLevel.DEBUG, "Name can be accessed: " + detachedParent.getName());
      logger.log(BasicLevel.DEBUG, "Age can be accessed: " + detachedParent.getAge());
      assertEquals(parent.getName(), detachedParent.getName());
      assertEquals(parent.getAge(), detachedParent.getAge());
      logger.log(BasicLevel.DEBUG, "Address should not be accessed: " + detachedParent.getAddress());

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    pm.currentTransaction().commit();
    
    logger.log(BasicLevel.DEBUG, "FG: " + fp.getGroups());
    try {
      pm.currentTransaction().begin();
      Person detachedParent = (Person) pm.detachCopy(parent);
      logger.log(BasicLevel.DEBUG, "Name can be accessed: " + detachedParent.getName());
      logger.log(BasicLevel.DEBUG, "Age can be accessed: " + detachedParent.getAge());
      logger.log(BasicLevel.DEBUG, "Address can be accessed: " + 
          detachedParent.getAddress().getStreet() + ", " + detachedParent.getAddress().getCity()
          + ", " + detachedParent.getAddress().getCountry().getCode());

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    pm.currentTransaction().commit();
    
    logger.log(BasicLevel.DEBUG, "FG: " + fp.getGroups());
    try {
      pm.currentTransaction().begin();
      Person detachedParent = (Person) pm.detachCopy(parent);
      logger.log(BasicLevel.DEBUG, "Name can be accessed: " + detachedParent.getName());
      logger.log(BasicLevel.DEBUG, "Age can be accessed: " + detachedParent.getAge());
      logger.log(BasicLevel.DEBUG, "Address can be accessed: " + 
          detachedParent.getAddress().getStreet() + ", " + detachedParent.getAddress().getCity()
          + ", " + detachedParent.getAddress().getCountry().getCode());

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    pm.currentTransaction().commit();
    logger.log(BasicLevel.DEBUG, "FG: " + fp.getGroups());
    
    try {
      pm.currentTransaction().begin();
      Person detachedParent = (Person) pm.detachCopy(parent);
      assertEquals(parent.getName(), detachedParent.getName());
      assertEquals(parent.getAge(), detachedParent.getAge());
      assertEquals(parent.getAddress().getCity(), detachedParent.getAddress().getCity());
      assertEquals(parent.getAddress().getCountry().getCode(), detachedParent.getAddress().getCountry().getCode());
      assertEquals(parent.getAddress().getCountry().getName(), detachedParent.getAddress().getCountry().getName());

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    pm.currentTransaction().commit();
    logger.log(BasicLevel.DEBUG, "FG: " + fp.getGroups());
    
    try{
      pm.currentTransaction().begin();
      Person detachedParent = (Person) pm.detachCopy(parent);
      assertEquals(parent.getName(), detachedParent.getName());
      assertEquals(parent.getAge(), detachedParent.getAge());
      assertEquals(parent.getAddress().getCity(), detachedParent.getAddress().getCity());
      assertEquals(parent.getAddress().getCountry().getCode(), detachedParent.getAddress().getCountry().getCode());
      assertEquals(parent.getAddress().getCountry().getName(), detachedParent.getAddress().getCountry().getName());

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