src/share/classes/org/omg/CORBA/ContextList.java

Sat, 01 Dec 2007 00:00:00 +0000

author
duke
date
Sat, 01 Dec 2007 00:00:00 +0000
changeset 1
55540e827aef
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duke@1 1 /*
duke@1 2 * Copyright 1996-1999 Sun Microsystems, Inc. All Rights Reserved.
duke@1 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1 4 *
duke@1 5 * This code is free software; you can redistribute it and/or modify it
duke@1 6 * under the terms of the GNU General Public License version 2 only, as
duke@1 7 * published by the Free Software Foundation. Sun designates this
duke@1 8 * particular file as subject to the "Classpath" exception as provided
duke@1 9 * by Sun in the LICENSE file that accompanied this code.
duke@1 10 *
duke@1 11 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@1 14 * version 2 for more details (a copy is included in the LICENSE file that
duke@1 15 * accompanied this code).
duke@1 16 *
duke@1 17 * You should have received a copy of the GNU General Public License version
duke@1 18 * 2 along with this work; if not, write to the Free Software Foundation,
duke@1 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1 20 *
duke@1 21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@1 22 * CA 95054 USA or visit www.sun.com if you need additional information or
duke@1 23 * have any questions.
duke@1 24 */
duke@1 25
duke@1 26 package org.omg.CORBA;
duke@1 27
duke@1 28 /**
duke@1 29 * An object containing a modifiable list of <code>String</code> objects
duke@1 30 * that represent property names.
duke@1 31 * This class is used in <code>Request</code> operations to
duke@1 32 * describe the contexts that need to be resolved and sent with the
duke@1 33 * invocation. (A context is resolved by giving a property name
duke@1 34 * and getting back the value associated with it.) This is done
duke@1 35 * by calling the <code>Context</code> method
duke@1 36 * <code>get_values</code> and supplying a string from a
duke@1 37 * <code>ContextList</code> object as the third parameter.
duke@1 38 * The method <code>get_values</code> returns an <code>NVList</code>
duke@1 39 * object containing the <code>NamedValue</code> objects that hold
duke@1 40 * the value(s) identified by the given string.
duke@1 41 * <P>
duke@1 42 * A <code>ContextList</code> object is created by the ORB, as
duke@1 43 * illustrated here:
duke@1 44 * <PRE>
duke@1 45 * ORB orb = ORB.init(args, null);
duke@1 46 * org.omg.CORBA.ContextList ctxList = orb.create_context_list();
duke@1 47 * </PRE>
duke@1 48 * The variable <code>ctxList</code> represents an empty
duke@1 49 * <code>ContextList</code> object. Strings are added to
duke@1 50 * the list with the method <code>add</code>, accessed
duke@1 51 * with the method <code>item</code>, and removed with the
duke@1 52 * method <code>remove</code>.
duke@1 53 *
duke@1 54 * @see Context
duke@1 55 * @since JDK1.2
duke@1 56 */
duke@1 57
duke@1 58 public abstract class ContextList {
duke@1 59
duke@1 60 /**
duke@1 61 * Returns the number of <code>String</code> objects in this
duke@1 62 * <code>ContextList</code> object.
duke@1 63 *
duke@1 64 * @return an <code>int</code> representing the number of
duke@1 65 * <code>String</code>s in this <code>ContextList</code> object
duke@1 66 */
duke@1 67
duke@1 68 public abstract int count();
duke@1 69
duke@1 70 /**
duke@1 71 * Adds a <code>String</code> object to this <code>ContextList</code>
duke@1 72 * object.
duke@1 73 *
duke@1 74 * @param ctx the <code>String</code> object to be added
duke@1 75 */
duke@1 76
duke@1 77 public abstract void add(String ctx);
duke@1 78
duke@1 79 /**
duke@1 80 * Returns the <code>String</code> object at the given index.
duke@1 81 *
duke@1 82 * @param index the index of the string desired, with 0 being the
duke@1 83 index of the first string
duke@1 84 * @return the string at the given index
duke@1 85 * @exception org.omg.CORBA.Bounds if the index is greater than
duke@1 86 * or equal to the number of strings in this
duke@1 87 * <code>ContextList</code> object
duke@1 88 */
duke@1 89
duke@1 90 public abstract String item(int index) throws org.omg.CORBA.Bounds;
duke@1 91
duke@1 92 /**
duke@1 93 * Removes the <code>String</code> object at the given index. Note that
duke@1 94 * the indices of all strings following the one removed are
duke@1 95 * shifted down by one.
duke@1 96 *
duke@1 97 * @param index the index of the <code>String</code> object to be removed,
duke@1 98 * with 0 designating the first string
duke@1 99 * @exception org.omg.CORBA.Bounds if the index is greater than
duke@1 100 * or equal to the number of <code>String</code> objects in
duke@1 101 * this <code>ContextList</code> object
duke@1 102 */
duke@1 103
duke@1 104 public abstract void remove(int index) throws org.omg.CORBA.Bounds;
duke@1 105
duke@1 106 }

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