/* Context.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
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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
conditions of the GNU General Public License cover the whole
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As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
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this exception to your version of the library, but you are not
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package org.omg.CORBA;


/**
 *
 * This class holds the list of the named properties. It is normally
 * used to represent information about various circumstances of the
 * invocation. A Context if first created by
 * {@link org.omg.CORBA.ORB#get_default_context() } and then invoking
 * {@link create_child(String)} of the default context.
 *
 * The contexts are named.
 *
 * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
 *
 */
public abstract class Context
{
  public Context()
  {
  }

  /**
   * Get the context name.
   * @return the name of this context.
   */
  public abstract String context_name();

  /**
   * Create a child of this Context, giving it a name.
   * @param name a name of the child context.
   *
   * @return the newly created context.
   */
  public abstract Context create_child(String child);

  /**
   * Delete one or several (identically named) given properties.
   *
   * @param property the name of the property to delete, may
   * end by wildchar character '*'. The search scope is always
   * limited to the current context.
   */
  public abstract void delete_values(String property);

  /**
   * Search the values.
   *
   * @param start_scope the context at which to initiate the search.
   * @param flags the search operation flags. 
   * The flag {@link CTX_RESTRICT_SCOPE} means
   * that search is restricted to the start_scope.
   * @param pattern the property being searched, can be
   * either name or name with the optional trailing wildchar character
   * '*'.
   * @return the list of the found properties.
   */
  public abstract NVList get_values(String start_scope, int flags,
                                    String pattern
                                   );

  /**
   * Get the parent of this context.
   * @return the parent of this context.
   */
  public abstract Context parent();

  /**
   * Set a property.
   * @param name the property name.
   * @param value the property value (the {@link Any} must hold string).
   */
  public abstract void set_one_value(String name, Any value);
  
  /**
   * Set multiple properties.
   * 
   * @param values a list of properties, the {@link Any}'s 
   * in the list components must hold strings.
   */
  public abstract void set_values(NVList values);
  
  
}