deep-c-rsc/JCGO/classpath-0.93/javax/naming/NameClassPair.java

/* NameClassPair.java --
   Copyright (C) 2001, 2005, 2006  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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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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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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package javax.naming;

import java.io.Serializable;

/**
 * <code>NameClassPair</code> represents the name-classname mapping pair 
 * of a binding in a context.
 * <p>
 * Bindings are mappings of a name to an object and this class is used to
 * specify the mapping of the name to the class type of the bound object.
 * As classname the fully qualified classname is used.
 * </p>
 * 
 * @author Tom Tromey (tromey@redhat.com)
 * @since 1.3
 */
public class NameClassPair implements Serializable
{
  private static final long serialVersionUID = 5620776610160863339L;

  /**
   * Constructs an instance with the given name and classname.
   * 
   * @param name the name of the binding relative to the target context
   * (may not be <code>null</code>)
   * @param className the name of the class. If <code>null</code> the bound
   * object is also <code>null</code>
   */
  public NameClassPair (String name, String className)
  {
    this (name, className, true);
  }

  /**
   * Constructs an instance with the given name and classname and a 
   * flag indicating if the name is relative to the target context.
   * 
   * @param name the name of the binding (may not be <code>null</code>)
   * @param className the name of the class. If <code>null</code> the bound
   * object is also <code>null</code>
   * @param isRelative flag indicating if the name is relative or not
   */
  public NameClassPair (String name, String className, boolean isRelative)
  {
    this.name = name;
    this.className = className;
    this.isRel = isRelative;
  }

  /**
   * Returns the classname of the binding.
   * @return The fully qualified classname or <code>null</code> if the 
   * bound object is null.
   */
  public String getClassName ()
  {
    return className;
  }

  /**
   * Returns the name of the binding.
   * @return The name.
   */
  public String getName ()
  {
    return name;
  }

  /**
   * Checks whether the name is relative to the target context or not.
   * @return <code>true</code> if the name is relative, 
   * <code>false</code> otherwise.
   */
  public boolean isRelative ()
  {
    return isRel;
  }

  /**
   * Sets the classname of the bound object.
   * @param name the classname to set (maybe <code>null</code>)
   */
  public void setClassName (String name)
  {
    this.className = name;
  }

  /**
   * Sets the name of the binding.
   * @param name the name to set
   */
  public void setName (String name)
  {
    this.name = name;
  }

  /**
   * Sets if the name is relative to the target context.
   * @param r <code>true</code> to mark as relative
   */
  public void setRelative (boolean r)
  {
    this.isRel = r;
  }
  
  /**
   * Sets the full name for this binding. Setting the full name by this 
   * method is the only way to initialize full names of bindings if 
   * supported by a specific naming system.
   * 
   * @param fullName the full name of this binding. If not set or set to 
   * <code>null</code> the <code>getNameInNamespace()</code> method will
   * throw an exception
   * 
   * @see #getNameInNamespace()
   * 
   * @since 1.5
   */
  public void setNameInNamespace(String fullName) 
  {
    this.fullName = fullName;
  }
  
  /**
   * Returns the full name for this binding. The full name of a binding is
   * defined as the absolute name in its own namespace and is not valid 
   * outside.
   * 
   * @return The full name in the bindings namespace.
   * @throws UnsupportedOperationException if no full name is applicable in 
   * the specific naming system.
   * 
   * @see Context#getNameInNamespace()
   * 
   * @since 1.5
   */
  public String getNameInNamespace()
  {
    if (this.fullName == null)
      throw new UnsupportedOperationException();
    
    return this.fullName;
  }

  /**
   * Returns the string representation.
   * @return The string <code>getName() + ":" + getClassName()</code>.
   */
  public String toString ()
  {
    // Specified by class documentation.
    return name + ":" + className;
  }

  // These field names are fixed by the serialization spec.
  private String name;
  private String className;
  private boolean isRel;
  private String fullName;
}