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/* * @(#)ModificationItem.java 1.9 05/11/17 * * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package javax.naming.directory; /** * This class represents a modification item. * It consists of a modification code and an attribute on which to operate. *<p> * A ModificationItem instance is not synchronized against concurrent * multithreaded access. Multiple threads trying to access and modify * a single ModificationItem instance should lock the object. * * @author Rosanna Lee * @author Scott Seligman * @version 1.9 05/11/17 * @since 1.3 */ /* *<p> * The serialized form of a ModificationItem object consists of the * modification op (and int) and the corresponding Attribute. */ public class ModificationItem implements java.io.Serializable { /** * Contains an integer identify the modification * to be performed. * @serial */ private int mod_op; /** * Contains the attribute identifying * the attribute and/or its value to be applied for the modification. * @serial */ private Attribute attr; /** * Creates a new instance of ModificationItem. * @param mod_op Modification to apply. It must be one of: * DirContext.ADD_ATTRIBUTE * DirContext.REPLACE_ATTRIBUTE * DirContext.REMOVE_ATTRIBUTE * @param attr The non-null attribute to use for modification. * @exception IllegalArgumentException If attr is null, or if mod_op is * not one of the ones specified above. */ public ModificationItem(int mod_op, Attribute attr) { switch (mod_op) { case DirContext.ADD_ATTRIBUTE: case DirContext.REPLACE_ATTRIBUTE: case DirContext.REMOVE_ATTRIBUTE: if (attr == null) throw new IllegalArgumentException("Must specify non-null attribute for modification"); this.mod_op = mod_op; this.attr = attr; break; default: throw new IllegalArgumentException("Invalid modification code " + mod_op); } } /** * Retrieves the modification code of this modification item. * @return The modification code. It is one of: * DirContext.ADD_ATTRIBUTE * DirContext.REPLACE_ATTRIBUTE * DirContext.REMOVE_ATTRIBUTE */ public int getModificationOp() { return mod_op; } /** * Retrieves the attribute associated with this modification item. * @return The non-null attribute to use for the modification. */ public Attribute getAttribute() { return attr; } /** * Generates the string representation of this modification item, * which consists of the modification operation and its related attribute. * The string representation is meant for debugging and not to be * interpreted programmatically. * * @return The non-null string representation of this modification item. */ public String toString() { switch (mod_op) { case DirContext.ADD_ATTRIBUTE: return ("Add attribute: " + attr.toString()); case DirContext.REPLACE_ATTRIBUTE: return ("Replace attribute: " + attr.toString()); case DirContext.REMOVE_ATTRIBUTE: return ("Remove attribute: " + attr.toString()); } return ""; // should never happen } /** * Use serialVersionUID from JNDI 1.1.1 for interoperability */ private static final long serialVersionUID = 7573258562534746850L; }