1 /*
   2  * Copyright (c) 2000, 2003, 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 com.sun.corba.se.impl.dynamicany;
  27 
  28 import org.omg.CORBA.TypeCode;
  29 import org.omg.CORBA.TCKind;
  30 import org.omg.CORBA.Any;
  31 import org.omg.CORBA.TypeCodePackage.BadKind;
  32 import org.omg.CORBA.TypeCodePackage.Bounds;
  33 import org.omg.DynamicAny.*;
  34 import org.omg.DynamicAny.DynAnyPackage.TypeMismatch;
  35 import org.omg.DynamicAny.DynAnyPackage.InvalidValue;
  36 import org.omg.DynamicAny.DynAnyFactoryPackage.InconsistentTypeCode;
  37 
  38 import com.sun.corba.se.spi.orb.ORB ;
  39 import com.sun.corba.se.spi.logging.CORBALogDomains ;
  40 import com.sun.corba.se.impl.logging.ORBUtilSystemException ;
  41 
  42 abstract class DynValueCommonImpl extends DynAnyComplexImpl implements DynValueCommon
  43 {
  44     //
  45     // Constructors
  46     //
  47 
  48     protected boolean isNull;
  49 
  50     private DynValueCommonImpl() {
  51         this(null, (Any)null, false);
  52         isNull = true;
  53     }
  54 
  55     protected DynValueCommonImpl(ORB orb, Any any, boolean copyValue) {
  56         super(orb, any, copyValue);
  57         isNull = checkInitComponents();
  58     }
  59 
  60     protected DynValueCommonImpl(ORB orb, TypeCode typeCode) {
  61         super(orb, typeCode);
  62         isNull = true;
  63     }
  64 
  65     //
  66     // DynValueCommon methods
  67     //
  68 
  69     // Returns TRUE if this object represents a null valuetype
  70     public boolean is_null() {
  71         return isNull;
  72     }
  73 
  74     // Changes the representation to a null valuetype.
  75     public void set_to_null() {
  76         isNull = true;
  77         clearData();
  78     }
  79 
  80     // If this object represents a null valuetype then this operation
  81     // replaces it with a newly constructed value with its components
  82     // initialized to default values as in DynAnyFactory::create_dyn_any_from_type_code.
  83     // If this object represents a non-null valuetype, then this operation has no effect.
  84     public void set_to_value() {
  85         if (isNull) {
  86             isNull = false;
  87             // the rest is done lazily
  88         }
  89         // else: there is nothing to do
  90     }
  91 
  92     //
  93     // Methods differing from DynStruct
  94     //
  95 
  96     // Required to raise InvalidValue if this is a null value type.
  97     public org.omg.DynamicAny.NameValuePair[] get_members ()
  98         throws org.omg.DynamicAny.DynAnyPackage.InvalidValue
  99     {
 100         if (status == STATUS_DESTROYED) {
 101             throw wrapper.dynAnyDestroyed() ;
 102         }
 103         if (isNull) {
 104             throw new InvalidValue();
 105         }
 106         checkInitComponents();
 107         return nameValuePairs;
 108     }
 109 
 110     // Required to raise InvalidValue if this is a null value type.
 111     public org.omg.DynamicAny.NameDynAnyPair[] get_members_as_dyn_any ()
 112         throws org.omg.DynamicAny.DynAnyPackage.InvalidValue
 113     {
 114         if (status == STATUS_DESTROYED) {
 115             throw wrapper.dynAnyDestroyed() ;
 116         }
 117         if (isNull) {
 118             throw new InvalidValue();
 119         }
 120         checkInitComponents();
 121         return nameDynAnyPairs;
 122     }
 123 
 124     //
 125     // Overridden methods
 126     //
 127 
 128     // Overridden to change to non-null status.
 129     public void set_members (org.omg.DynamicAny.NameValuePair[] value)
 130         throws org.omg.DynamicAny.DynAnyPackage.TypeMismatch,
 131                org.omg.DynamicAny.DynAnyPackage.InvalidValue
 132     {
 133         super.set_members(value);
 134         // If we didn't get an exception then this must be a valid non-null value
 135         isNull = false;
 136     }
 137 
 138     // Overridden to change to non-null status.
 139     public void set_members_as_dyn_any (org.omg.DynamicAny.NameDynAnyPair[] value)
 140         throws org.omg.DynamicAny.DynAnyPackage.TypeMismatch,
 141                org.omg.DynamicAny.DynAnyPackage.InvalidValue
 142     {
 143         super.set_members_as_dyn_any(value);
 144         // If we didn't get an exception then this must be a valid non-null value
 145         isNull = false;
 146     }
 147 }