Examples of javax.jdo.spi.PersistenceCapable

javax.jdo.spi.PersistenceCapable
A class that can be managed by a binary-compatible JDO implementation must implement this interface.
This interface defines methods that allow the implementation to manage the instances. It also defines methods that allow a JDO aware application to examine the runtime state of instances. For example, an application can discover whether the instance is persistent, transactional, dirty, new, deleted, or detached; and to get its associated PersistenceManager, object identity, and version if it has one.
In the Reference Implementation, the JDO Enhancer modifies the class to implement PersistenceCapable prior to loading the class into the runtime environment. The Reference Enhancer also adds code to implement the methods defined by PersistenceCapable.
The extra methods in the PersistenceCapable interface might be generated by pre-processing a .java file, or might be generated from a tool directly. The exact technique for generating the extra methods is not specified by JDO.
The PersistenceCapable interface is designed to avoid name conflicts in the scope of user-defined classes. All of its declared method names are prefixed with 'jdo'. @version 2.0

     */
    public synchronized Object createObjectId(
        StateManagerInternal sm,
        PersistenceManagerInternal pm)
    {
        PersistenceCapable obj = sm.getObject();
        Identity oid = new Identity(obj, connector.getBroker());
        return oid;
    }

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    /* (non-Javadoc)
     * @see org.datanucleus.api.ApiAdapter#getCopyOfPersistableObject(java.lang.Object, org.datanucleus.store.ObjectProvider, int[])
     */
    public Object getCopyOfPersistableObject(Object obj, ObjectProvider sm, int[] fieldNumbers)
    {
        PersistenceCapable pc = (PersistenceCapable)obj;
        PersistenceCapable copy = pc.jdoNewInstance((javax.jdo.spi.StateManager)sm);
        copy.jdoCopyFields(pc, fieldNumbers);
        return copy;
    }

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    {
        if (obj == null || !(obj instanceof PersistenceCapable))
        {
            return null;
        }
        PersistenceCapable pc = (PersistenceCapable)obj;


        if (isDetached(pc))
        {
            ExecutionContext ec = ((JDOPersistenceManager)pm).getObjectManager();


            // Temporarily attach a StateManager to access the detached field information
            StateManager sm = (StateManager) ObjectProviderFactory.newForDetached(ec, pc, getObjectId(pc), null);
            pc.jdoReplaceStateManager((javax.jdo.spi.StateManager) sm);
            sm.retrieveDetachState(sm);
            String[] dirtyFieldNames = sm.getDirtyFieldNames();
            pc.jdoReplaceStateManager(null);


            return dirtyFieldNames;
        }
        else
        {

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    {
        if (obj == null || !(obj instanceof PersistenceCapable))
        {
            return null;
        }
        PersistenceCapable pc = (PersistenceCapable)obj;


        if (isDetached(pc))
        {
            // Temporarily attach a StateManager to access the detached field information
            ExecutionContext ec = ((JDOPersistenceManager)pm).getObjectManager();
            StateManager sm = (StateManager) ObjectProviderFactory.newForDetached(ec, pc, getObjectId(pc), null);
            pc.jdoReplaceStateManager((javax.jdo.spi.StateManager) sm);
            sm.retrieveDetachState(sm);
            String[] loadedFieldNames = sm.getLoadedFieldNames();
            pc.jdoReplaceStateManager(null);


            return loadedFieldNames;
        }
        else
        {

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    {
        if (obj == null || !(obj instanceof PersistenceCapable))
        {
            return null;
        }
        PersistenceCapable pc = (PersistenceCapable)obj;


        if (isDetached(pc))
        {
            // Temporarily attach a StateManager to access the detached field information
            ExecutionContext ec = ((JDOPersistenceManager)pm).getObjectManager();
            StateManager sm = (StateManager) ObjectProviderFactory.newForDetached(ec, pc, getObjectId(pc), null);
            pc.jdoReplaceStateManager((javax.jdo.spi.StateManager) sm);
            sm.retrieveDetachState(sm);
            int position = sm.getClassMetaData().getAbsolutePositionOfMember(memberName);
            boolean loaded = sm.isFieldLoaded(position);
            pc.jdoReplaceStateManager(null);


            return loaded;
        }
        else
        {
            ExecutionContext ec = ((JDOPersistenceManager)pc.jdoGetPersistenceManager()).getObjectManager();
            ObjectProvider sm = ec.findObjectProvider(pc);
            if (sm == null)
            {
                return null;
            }

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    {
        if (obj == null || !(obj instanceof PersistenceCapable))
        {
            return null;
        }
        PersistenceCapable pc = (PersistenceCapable)obj;


        if (isDetached(pc))
        {
            // Temporarily attach a StateManager to access the detached field information
            ExecutionContext ec = ((JDOPersistenceManager)pm).getObjectManager();
            StateManager sm = (StateManager) ObjectProviderFactory.newForDetached(ec, pc, getObjectId(pc), null);
            pc.jdoReplaceStateManager((javax.jdo.spi.StateManager) sm);
            sm.retrieveDetachState(sm);
            int position = sm.getClassMetaData().getAbsolutePositionOfMember(memberName);
            boolean[] dirtyFieldNumbers = sm.getDirtyFields();
            pc.jdoReplaceStateManager(null);


            return dirtyFieldNumbers[position];
        }
        else
        {
            ExecutionContext ec = ((JDOPersistenceManager)pc.jdoGetPersistenceManager()).getObjectManager();
            ObjectProvider sm = ec.findObjectProvider(pc);
            if (sm == null)
            {
                return null;
            }

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    /* (non-Javadoc)
     * @see org.datanucleus.api.ApiAdapter#getCopyOfPersistableObject(java.lang.Object, org.datanucleus.store.ObjectProvider, int[])
     */
    public Object getCopyOfPersistableObject(Object obj, ObjectProvider sm, int[] fieldNumbers)
    {
        PersistenceCapable pc = (PersistenceCapable)obj;
        PersistenceCapable copy = pc.jdoNewInstance((javax.jdo.spi.StateManager)sm);
        copy.jdoCopyFields(pc, fieldNumbers);
        return copy;
    }

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        if (registerClasses) {
            // Register XORM-specific classes' JDO Metadata
      
            if (!PersistenceCapable.class.isAssignableFrom(clazz)) {
                InterfaceInvocationHandler handler = new InterfaceInvocationHandler(factory, mapping, null);
                PersistenceCapable pc = (PersistenceCapable) handler.newProxy();
    
                Collection managedFields = mapping.getManagedFields();
                int len = managedFields.size();
                String[] fieldNames = new String[len];
                Class[] fieldTypes = new Class[len];

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    public void makePersistent(Object object) {
        assertNotClosed();
        if (!currentTransaction().isActive()) {
            throw new JDOUserException(I18N.msg("E_no_txn"));
        }
        PersistenceCapable pc = (PersistenceCapable) object;
        ObjectState handler = getObjectState(object);
        if (handler instanceof InterfaceInvocationHandler) {
            // XORM-specific case
            ((InterfaceInvocationHandler) handler).makePersistent(this);
        } else {
            PersistenceManager mgr = pc.jdoGetPersistenceManager();
            if (mgr != null) {
                if (mgr == this) return; // already managed
                else throw new JDOUserException(I18N.msg("E_wrong_PM"));
            }
            // Standard JDO object, make a StateManager for it

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    }


    public Object go() {
  Iterator i = collection.iterator();
  while (i.hasNext()) {
      PersistenceCapable pc = (PersistenceCapable) i.next();
      System.out.println("Result: " + pc.jdoGetObjectId());
      boolean loop = true;
      while (loop) {
    System.out.print("[E] Edit, [R] Remove, [X] Exit, [N] Next: ");
    String choice = readLine();
    switch (choice.charAt(0)) {

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