deep-c-rsc/JCGO/classpath-0.93/org/omg/CosNaming/BindingIteratorPOA.java

/* BindingIteratorPOA.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
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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
executable, regardless of the license terms of these independent
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package org.omg.CosNaming;

import gnu.CORBA.Minor;

import org.omg.CORBA.BAD_OPERATION;
import org.omg.CORBA.CompletionStatus;
import org.omg.CORBA.portable.InputStream;
import org.omg.CORBA.portable.InvokeHandler;
import org.omg.CORBA.portable.OutputStream;
import org.omg.CORBA.portable.ResponseHandler;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.Servant;

/**
 * The binding iterator servant, used in POA-based naming service
 * implementations.
 * 
 * @since 1.4 
 *
 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
 */
public abstract class BindingIteratorPOA
  extends Servant
  implements BindingIteratorOperations, InvokeHandler
{
  /** @inheritDoc */
  public String[] _all_interfaces(POA poa, byte[] object_ID)
  {
    return new String[] { BindingIteratorHelper.id() };
  }

  /**
   * Call the required method.
   */
  public OutputStream _invoke(String method, InputStream in, ResponseHandler rh)
  {
    OutputStream out = null;

    // We suppose that the next_n should be the most popular.
    if (method.equals("next_n"))
      {
        // The next_n has been invoked.
        int amount = in.read_ulong();
        BindingListHolder a_list = new BindingListHolder();

        boolean result = next_n(amount, a_list);

        out = rh.createReply();
        out.write_boolean(result);
        BindingListHelper.write(out, a_list.value);
      }
    else if (method.equals("next_one"))
      {
        // The next_one has been invoked.
        BindingHolder a_binding = new BindingHolder();

        boolean result = next_one(a_binding);

        out = rh.createReply();
        out.write_boolean(result);
        BindingHelper.write(out, a_binding.value);
      }
    else if (method.equals("destroy"))
      {
        // The destroy has been invoked.
        destroy();
        out = rh.createReply();
      }
    else
      throw new BAD_OPERATION(method, Minor.Method, 
        CompletionStatus.COMPLETED_MAYBE);

    return out;
  }

  /**
   * Get the CORBA object that delegates calls to this servant. The servant must
   * be already connected to an ORB.
   */
  public BindingIterator _this()
  {
    return BindingIteratorHelper.narrow(super._this_object());
  }

  /**
   * Get the CORBA object that delegates calls to this servant. Connect to the
   * given ORB, if needed.
   */
  public BindingIterator _this(org.omg.CORBA.ORB orb)
  {
    return BindingIteratorHelper.narrow(super._this_object(orb));
  }
}