gcc/libjava/classpath/gnu/CORBA/NamingService/Ext.java

/* TransientContextExt.java --
   Copyright (C) 2005, 2006 Free Software Foundation, Inc.

This file is part of GNU Classpath.

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package gnu.CORBA.NamingService;

import gnu.CORBA.SafeForDirectCalls;

import org.omg.CORBA.NO_IMPLEMENT;
import org.omg.CORBA.Object;
import org.omg.CORBA.portable.Delegate;
import org.omg.CORBA.portable.ObjectImpl;
import org.omg.CosNaming.BindingIteratorHolder;
import org.omg.CosNaming.BindingListHolder;
import org.omg.CosNaming.NameComponent;
import org.omg.CosNaming.NamingContext;
import org.omg.CosNaming.NamingContextPackage.AlreadyBound;
import org.omg.CosNaming.NamingContextPackage.CannotProceed;
import org.omg.CosNaming.NamingContextPackage.InvalidName;
import org.omg.CosNaming.NamingContextPackage.NotEmpty;
import org.omg.CosNaming.NamingContextPackage.NotFound;
import org.omg.CosNaming._NamingContextExtImplBase;

/**
 * This naming context that adds the the string based extensions,
 * defined by {@link NamingContextExt}. The basic functionality
 * is handled by the enclosed instance of the {@link NamingContext}.
 *
 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
 */
public class Ext
  extends _NamingContextExtImplBase implements SafeForDirectCalls
{
  /**
   * The older version of the naming context, where all relevant calls
   * are forwarded.
   */
  private final NamingContext classic;

  /**
   * The converter class converts between string and array form of the
   * name.
   */
  private NameTransformer converter = new NameTransformer();

  /**
   * Create the extensions for the given instance of the context.
   *
   * @param previous_version the previous version of the naming context.
   */
  public Ext(NamingContext previous_version)
  {
    classic = previous_version;
  }

  /**
   * Sets a delegate to this context and, if appropriated, also
   * sets the same delegate to the enclosing 'classic' context.
   *
   * @param a_delegate a delegate to set.
   */
  public void _set_delegate(Delegate a_delegate)
  {
    super._set_delegate(a_delegate);
    if (classic instanceof ObjectImpl)
      ((ObjectImpl) classic)._set_delegate(a_delegate);
  }

  /** {@inheritDoc} */
  public void bind(NameComponent[] a_name, Object an_object)
            throws NotFound, CannotProceed, InvalidName, AlreadyBound
  {
    classic.bind(a_name, an_object);
  }

  /** {@inheritDoc} */
  public void bind_context(NameComponent[] a_name, NamingContext context)
                    throws NotFound, CannotProceed, InvalidName, AlreadyBound
  {
    classic.bind_context(a_name, context);
  }

  /** {@inheritDoc} */
  public NamingContext bind_new_context(NameComponent[] a_name)
                                 throws NotFound, AlreadyBound, CannotProceed,
                                        InvalidName
  {
    return classic.bind_new_context(a_name);
  }

  /** {@inheritDoc} */
  public void destroy()
               throws NotEmpty
  {
    classic.destroy();
  }

  /** {@inheritDoc} */
  public void list(int amount, BindingListHolder a_list,
                   BindingIteratorHolder an_iter
                  )
  {
    classic.list(amount, a_list, an_iter);
  }

  /** {@inheritDoc} */
  public NamingContext new_context()
  {
    return classic.new_context();
  }

  /** {@inheritDoc} */
  public void rebind(NameComponent[] a_name, Object an_object)
              throws NotFound, CannotProceed, InvalidName
  {
    classic.rebind(a_name, an_object);
  }

  /** {@inheritDoc} */
  public void rebind_context(NameComponent[] a_name, NamingContext context)
                      throws NotFound, CannotProceed, InvalidName
  {
    classic.rebind_context(a_name, context);
  }

  /** {@inheritDoc} */
  public Object resolve(NameComponent[] a_name)
                 throws NotFound, CannotProceed, InvalidName
  {
    return classic.resolve(a_name);
  }

  /**
   * Resolves the name, represented in the form of the string. The name
   * is first parsed into an array representation, then the call
   * is forwarded to the {@link resolve(NameComponent[])}.
   *
   * @param a_name_string a name to resolve.
   *
   * @return the resolved object.
   *
   * @throws NotFound if the name cannot be resolved.
   * @throws InvalidName if the name is invalid.
   * @throws CannotProceed on unexpected circumstances.
   */
  public Object resolve_str(String a_name_string)
                     throws NotFound, CannotProceed, InvalidName
  {
    return resolve(to_name(a_name_string));
  }

  /**
   * Convert the name string representation into array representation.
   *
   * @param a_name_string a string to convert.
   * @return a converted array of the name components
   *
   * @throws InvalidName on parsing error.
   */
  public NameComponent[] to_name(String a_name_string)
                          throws InvalidName
  {
    return converter.toName(a_name_string);
  }

  /**
   * Convert a name component array representation into string representation.
   *
   * @param a_name a name to convert.
   *
   * @return a string form.
   *
   * @throws InvalidName if the passed name is invalid.
   */
  public String to_string(NameComponent[] a_name)
                   throws InvalidName
  {
    return converter.toString(a_name);
  }

  /**
   * This method is not yet implemented.
   * FIXME TODO implement it.
   */
  public String to_url(String an_address, String a_name_string)
                throws org.omg.CosNaming.NamingContextExtPackage.InvalidAddress,
                       InvalidName
  {
    throw new NO_IMPLEMENT("Method to_url() not yet implemented.");
  }

  /** {@inheritDoc} */
  public void unbind(NameComponent[] a_name)
              throws NotFound, CannotProceed, InvalidName
  {
    classic.unbind(a_name);
  }
}