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## org.omg.PortableServer
Class ServantLocatorHelper

    java.lang.Object
      org.omg.PortableServer.ServantLocatorHelper

    public abstract class ServantLocatorHelper

extends Object

When the POA has the NON_RETAIN policy it uses servant managers that are ServantLocators. Because the POA knows that the servant returned by this servant manager will be used only for a single request, it can supply extra information to the servant manager's operations and the servant manager's pair of operations may be able to cooperate to do something different than a ServantActivator. When the POA uses the ServantLocator interface, immediately after performing the operation invocation on the servant returned by preinvoke, the POA will invoke postinvoke on the servant manager, passing the ObjectId value and the Servant value as parameters (among others). This feature may be used to force every request for objects associated with a POA to be mediated by the servant manager.

Constructor Summary
`ServantLocatorHelper()`

Method Summary
`static ServantLocator` | `extract(Any a)`
`static String` | `id()`
`static void` | `insert(Any a, ServantLocator that)`
`static ServantLocator` | `narrow(Object obj)`
`static ServantLocator` | `read(InputStream istream)`
`static TypeCode` | `type()`
`static ServantLocator` | `unchecked_narrow(Object obj)`
`static void` | `write(OutputStream ostream, ServantLocator value)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### ServantLocatorHelper

    public ServantLocatorHelper()

Method Detail

### insert

    public static void insert(Any a,
                              ServantLocator that)

### extract

    public static ServantLocator extract(Any a)

### type

    public static TypeCode type()

### id

    public static String id()

### read

    public static ServantLocator read(InputStream istream)

### write

    public static void write(OutputStream ostream,
                             ServantLocator value)

### narrow

    public static ServantLocator narrow(Object obj)

### unchecked_narrow

    public static ServantLocator unchecked_narrow(Object obj)

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2004 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.