ServantLocatorHelper.java

/* ServantLocatorHelper.java --
   Copyright (C) 2005 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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any later version.

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

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02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
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permission to link this library with independent modules to produce an
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package org.omg.PortableServer;

import gnu.CORBA.Minor;

import org.omg.CORBA.Any;
import org.omg.CORBA.BAD_OPERATION;
import org.omg.CORBA.MARSHAL;
import org.omg.CORBA.ORB;
import org.omg.CORBA.TypeCode;
import org.omg.CORBA.portable.InputStream;
import org.omg.CORBA.portable.OutputStream;

/**
* The helper operations for the CORBA object {@link ServantLocator}.
*
* @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
*/
public abstract class ServantLocatorHelper
{
  /**
   * Get the type code of the {@link ServantLocator}.
   */
  public static TypeCode type()
  {
    return ORB.init().create_interface_tc(id(), "ServantLocator");
  }

  /**
   * Insert the ServantLocator into the given Any.
   *
   * @param any the Any to insert into.
   * @param that the ServantLocator to insert.
   */
  public static void insert(Any any, ServantLocator that)
  {
    any.insert_Object(that);
  }

  /**
   * Extract the ServantLocator from given Any.
   *
   * @throws BAD_OPERATION if the passed Any does not contain ServantLocator.
   */
  public static ServantLocator extract(Any any)
  {
    return narrow(any.extract_Object());
  }

  /**
   * Get the ServantLocator repository id.
   *
   * @return "org.omg.PortableServer.ServantLocatorOperations", always.
   */
  public static String id()
  {
    return "org.omg.PortableServer.ServantLocatorOperations";
  }

  /**
   * Cast the passed object into the ServantLocator.
   *
   * @param obj the object to narrow.
   * @return narrowed instance.
   * @throws BAD_PARAM if the passed object is not a ServantLocator.
   */
  public static ServantLocator narrow(org.omg.CORBA.Object obj)
  {
    try
      {
        return (ServantLocator) obj;
      }
    catch (ClassCastException ex)
      {
        BAD_OPERATION bad = new BAD_OPERATION();
        bad.minor = Minor.ClassCast;
        bad.initCause(ex);
        throw bad;
      }
  }
  
  /**
   * Narrow the given object to the ServantLocator. For the objects that are
   * always local, this operation does not differ from the ordinary
   * {@link #narrow} (ClassCastException will be thrown if narrowing something
   * different).
   * 
   * @param obj the object to cast.
   * 
   * @return the casted ServantLocator.
   * 
   * @since 1.5
   * 
   * @see OMG issue 4158.
   */
  public static ServantLocator unchecked_narrow(org.omg.CORBA.Object obj)
  {
    return narrow(obj);
  }    

  /**
   * This should read the servant locator, but it cannot be transferred
   * this way as its operations cannot be remote. The operations cannot
   * be remote because one of the method parameters, POA, is required to be
   * always a local object (both by 1.5 API and 3.0.3 OMG).
   *
   * @throws MARSHAL, always.
   *
   * @specnote Same as Sun.
   */
  public static ServantLocator read(InputStream input)
  {
    MARSHAL m = new MARSHAL("Inappropriate");
    m.minor = Minor.Inappropriate;
    throw m;
  }

  /**
   * This should write the servant activator, but it cannot be transferred
   * this way as its operations cannot be remote. The operations cannot
   * be remote because one of the method parameters, POA, is required to be
   * always a local object (both by 1.5 API and 3.0.3 OMG).
   *
   * @throws MARSHAL, always.
   *
   * @specnote Same as Sun.
   */
  public static void write(OutputStream output, ServantLocator value)
  {
    MARSHAL m = new MARSHAL("Inappropriate");
    m.minor = Minor.Inappropriate;
    throw m;
  }
}