001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package javax.xml.bind; 018 019 import java.io.Serializable; 020 021 import javax.xml.namespace.QName; 022 023 public class JAXBElement<T> implements Serializable { 024 025 private static final long serialVersionUID = 1L; 026 027 public final static class GlobalScope { 028 } 029 030 protected final QName name; 031 protected final Class<T> declaredType; 032 protected final Class scope; 033 protected T value; 034 protected boolean nil; 035 036 public JAXBElement(QName name, Class<T> declaredType, Class scope, T value) { 037 this.nil = false; 038 if (declaredType == null || name == null) { 039 throw new IllegalArgumentException(); 040 } 041 this.declaredType = declaredType; 042 if (scope == null) { 043 scope = GlobalScope.class; 044 } 045 this.scope = scope; 046 this.name = name; 047 setValue(value); 048 } 049 050 public JAXBElement(QName name, Class<T> declaredType, T value) { 051 this(name, declaredType, GlobalScope.class, value); 052 } 053 054 public Class<T> getDeclaredType() { 055 return declaredType; 056 } 057 058 public QName getName() { 059 return name; 060 } 061 062 public void setValue(T value) { 063 this.value = value; 064 } 065 066 public T getValue() { 067 return value; 068 } 069 070 public Class getScope() { 071 return scope; 072 } 073 074 public boolean isNil() { 075 return value == null || nil; 076 } 077 078 public void setNil(boolean nil) { 079 this.nil = nil; 080 } 081 082 public boolean isGlobalScope() { 083 return scope == GlobalScope.class; 084 } 085 086 public boolean isTypeSubstituted() { 087 if (value == null) { 088 return false; 089 } else { 090 return value.getClass() != declaredType; 091 } 092 } 093 }