Examples of com.sun.sgs.app.util.ManagedSerializable

com.sun.sgs.app.util.ManagedSerializable
A utility class for wrapping a {@link Serializable} object within a {@code ManagedObject} instance. This class is primarily intended to allow classthat does not implement {@code ManagedObject} to be persistently stored andaccessed through a {@code ManagedReference}.
The serialization costs for a class largely depend on the size of the objects that it references. The {@code ManagedReference} class allowsdevelopers the ability to create breaks in the serialization graphs where not all of the fields are deserialized when a class is deserialized. The {@code ManagedSerializable} class is intended to be used for wrapping largeserializable objects, such as collections, in order to break the serialization graph, thereby reducing the number of bytes read and written. Note that wrapping these types of objects does not guarantee a performance improvement.
Following is an example of where an existing class has been retrofitted to have {@code ManagedReference} references to its large fields, rather thanstandard references.
Before:
```
  public class MyPlayerObj { String name; Collection< Item > inventory; MapArea currentLocation; public MyPlayerObj(...) { ... inventory = new ArrayList< Item >(); } ... public void findNearbyPlayers() { for (Player p : currentLocation.getPlayers()) ... } }  
```
After:
```
 {@code}public class MyPlayerObj  String name; ManagedReference< ManagedSerializable< Collection< Item >>> inventoryRef; ManagedReference< ManagedSerializable< MapArea >> currentLocationRef; public MyPlayerObj(...) { ... Collection< Item > inventory = new ArrayList< Item >(); inventoryRef = AppContext.getDataManager(). createReference( new ManagedSerializable< Collection< Item>>(inventory)); } ... public void findNearbyPlayers() { ManagedSerializable< MapArea > curLocWrapper = currentLocationRef.get(); MapArea currentLocation = curLocWrapper.get(); for (Player p : currentLocation.getPlayers()) ... } } } 
```
Application developers are responsible for removing {@code ManagedSerializable} instances by calling {@link DataManager#removeObject DataManager.removeObject}. Developers should call {@link DataManager#markForUpdate DataManager.markForUpdate} or {@link ManagedReference#getForUpdate DataManager.getForUpdate} if the applicationmodifies objects wrapped by instances of this class. @param < T> the type of the wrapped object


        //We have to hang on to the wonderlandClientID to call the listener when we're done.
        //We can't pass it as an argument because of darkstar transactions
        //So create put it in the dataservice and keep a reference to it
        //Create a wrapper for the clientID, as it's not a managed object
        ManagedSerializable<WonderlandClientID> managedClientID = new ManagedSerializable(clientID);


        //create a refereence to the wrapped clientID
        ManagedReference<ManagedSerializable<WonderlandClientID>> wci = dataService.createReference(managedClientID);

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  if (nodeId == localNodeId) {
      return serverImpl;
  } else {
      String sessionServerKey = getClientSessionServerKey(nodeId);
      try {
    ManagedSerializable wrappedProxy = (ManagedSerializable)
        dataService.getServiceBinding(sessionServerKey);
    return (ClientSessionServer) wrappedProxy.get();
      } catch (NameNotBoundException e) {
    return null;
      }  catch (ObjectNotFoundException e) {
    logger.logThrow(
        Level.SEVERE, e,

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  if (nodeId == localNodeId) {
      return serverImpl;
  } else {
      String sessionServerKey = getClientSessionServerKey(nodeId);
      try {
    ManagedSerializable wrappedProxy = (ManagedSerializable)
        dataService.getServiceBinding(sessionServerKey);
    return (ClientSessionServer) wrappedProxy.get();
      } catch (NameNotBoundException e) {
    return null;
      }  catch (ObjectNotFoundException e) {
    logger.logThrow(
        Level.SEVERE, e,

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        set.add(null);
        set.add(1);
        set.add(2);
        Iterator<Object> iter = set.iterator();
        dataService.setBinding("iter",
             new ManagedSerializable(iter));
    }
      }), taskOwner);
  txnScheduler.runTask(
      new TestTask(new TestAbstractKernelRunnable() {
    public void run() {

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      new TestTask(new TestAbstractKernelRunnable() {
    public void run() {
        set.add(one);
        Iterator<Object> iter = set.iterator();
        dataService.setBinding("iter",
             new ManagedSerializable(iter));
    }
      }), taskOwner);
  txnScheduler.runTask(
      new TestTask(new TestAbstractKernelRunnable() {
    public void run() {

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    public void run() {
        set.add(one);
        set.add(new Int(2));
        Iterator<Object> iter = set.iterator();
        dataService.setBinding("iter",
             new ManagedSerializable(iter));
    }
      }), taskOwner);
  txnScheduler.runTask(
      new TestTask(new TestAbstractKernelRunnable() {
    public void run() {

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      iter.remove();
      fail("Expected IllegalStateException");
        } catch (IllegalStateException e) {
        }
        dataService.setBinding("iter",
             new ManagedSerializable(iter));
    }
      }), taskOwner);
  txnScheduler.runTask(
      new TestTask(new TestAbstractKernelRunnable() {
    public void run() {

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    public void run() {
        set.add(one);
        Iterator<Object> iter = set.iterator();
        iterRef.set(iter);
        dataService.setBinding("iter",
             new ManagedSerializable(iter));
    }
      }), taskOwner);
  txnScheduler.runTask(
      new TestTask(new TestAbstractKernelRunnable() {
    public void run() {

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          Proxy.newProxyInstance(
        ClientSessionServer.class.getClassLoader(),
        new Class[] { ClientSessionServer.class },
        handler);
      dataService.setServiceBinding(
          key, new ManagedSerializable(delayingServer));
        }
    }}, taskOwner);


      for (int i = 0; i < iterations; i++) {
    for (SgsTestNode node : nodes) {

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        assertEquals(50, values.size());
        assertTrue(controlValues.containsAll(values));
        assertIteratorContains(controlValues, values.iterator());


        dataService.setBinding("values",
             new ManagedSerializable(values));
    }
      }, taskOwner);
  txnScheduler.runTask(
      new TestAbstractKernelRunnable() {
    public void run() throws Exception {

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