1 /* 2 * Copyright (c) 1995, 2001, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package org.omg.CORBA; 27 28 import org.omg.CORBA.portable.Streamable; 29 import org.omg.CORBA.portable.InputStream; 30 import org.omg.CORBA.portable.OutputStream; 31 32 /** 33 * The Holder for <tt>Double</tt>. For more information on 34 * Holder files, see <a href="doc-files/generatedfiles.html#holder"> 35 * "Generated Files: Holder Files"</a>.<P> 36 * A Holder class for a <code>double</code> 37 * that is used to store "out" and "inout" parameters in IDL methods. 38 * If an IDL method signature has an IDL <code>double</code> as an "out" 39 * or "inout" parameter, the programmer must pass an instance of 40 * <code>DoubleHolder</code> as the corresponding 41 * parameter in the method invocation; for "inout" parameters, the programmer 42 * must also fill the "in" value to be sent to the server. 43 * Before the method invocation returns, the ORB will fill in the 44 * value corresponding to the "out" value returned from the server. 45 * <P> 46 * If <code>myDoubleHolder</code> is an instance of <code>DoubleHolder</code>, 47 * the value stored in its <code>value</code> field can be accessed with 48 * <code>myDoubleHolder.value</code>. 49 * 50 * @since JDK1.2 51 */ 52 public final class DoubleHolder implements Streamable { 53 54 /** 55 * The <code>double</code> value held by this <code>DoubleHolder</code> 56 * object. 57 */ 58 59 public double value; 60 61 /** 62 * Constructs a new <code>DoubleHolder</code> object with its 63 * <code>value</code> field initialized to 0.0. 64 */ 65 public DoubleHolder() { 66 } 67 68 /** 69 * Constructs a new <code>DoubleHolder</code> object for the given 70 * <code>double</code>. 71 * @param initial the <code>double</code> with which to initialize 72 * the <code>value</code> field of the new 73 * <code>DoubleHolder</code> object 74 */ 75 public DoubleHolder(double initial) { 76 value = initial; 77 } 78 79 /** 80 * Read a double value from the input stream and store it in the 81 * value member. 82 * 83 * @param input the <code>InputStream</code> to read from. 84 */ 85 public void _read(InputStream input) { 86 value = input.read_double(); 87 } 88 89 /** 90 * Write the double value stored in this holder to an 91 * <code>OutputStream</code>. 92 * 93 * @param output the <code>OutputStream</code> to write into. 94 */ 95 public void _write(OutputStream output) { 96 output.write_double(value); 97 } 98 99 /** 100 * Return the <code>TypeCode</code> of this holder object. 101 * 102 * @return the <code>TypeCode</code> object. 103 */ 104 public org.omg.CORBA.TypeCode _type() { 105 return ORB.init().get_primitive_tc(TCKind.tk_double); 106 } 107 108 109 }