Showing the changes to java/pkg/com/sun/beans/decoder/ObjectElementHandler.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,168 @@ | ||
| 1 | +/* | |
| 2 | + * Copyright (c) 2008, 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 | +package com.sun.beans.decoder; | |
| 26 | + | |
| 27 | +import java.beans.Expression; | |
| 28 | + | |
| 29 | +import static java.util.Locale.ENGLISH; | |
| 30 | + | |
| 31 | +/** | |
| 32 | + * This class is intended to handle <object> element. | |
| 33 | + * This element looks like <void> element, | |
| 34 | + * but its value is always used as an argument for element | |
| 35 | + * that contains this one. | |
| 36 | + * <p>The following atributes are supported: | |
| 37 | + * <dl> | |
| 38 | + * <dt>class | |
| 39 | + * <dd>the type is used for static methods and fields | |
| 40 | + * <dt>method | |
| 41 | + * <dd>the method name | |
| 42 | + * <dt>property | |
| 43 | + * <dd>the property name | |
| 44 | + * <dt>index | |
| 45 | + * <dd>the property index | |
| 46 | + * <dt>field | |
| 47 | + * <dd>the field name | |
| 48 | + * <dt>idref | |
| 49 | + * <dd>the identifier to refer to the variable | |
| 50 | + * <dt>id | |
| 51 | + * <dd>the identifier of the variable that is intended to store the result | |
| 52 | + * </dl> | |
| 53 | + * | |
| 54 | + * @since 1.7 | |
| 55 | + * | |
| 56 | + * @author Sergey A. Malenkov | |
| 57 | + */ | |
| 58 | +class ObjectElementHandler extends NewElementHandler { | |
| 59 | + private String idref; | |
| 60 | + private String field; | |
| 61 | + private Integer index; | |
| 62 | + private String property; | |
| 63 | + private String method; | |
| 64 | + | |
| 65 | + /** | |
| 66 | + * Parses attributes of the element. | |
| 67 | + * The following atributes are supported: | |
| 68 | + * <dl> | |
| 69 | + * <dt>class | |
| 70 | + * <dd>the type is used for static methods and fields | |
| 71 | + * <dt>method | |
| 72 | + * <dd>the method name | |
| 73 | + * <dt>property | |
| 74 | + * <dd>the property name | |
| 75 | + * <dt>index | |
| 76 | + * <dd>the property index | |
| 77 | + * <dt>field | |
| 78 | + * <dd>the field name | |
| 79 | + * <dt>idref | |
| 80 | + * <dd>the identifier to refer to the variable | |
| 81 | + * <dt>id | |
| 82 | + * <dd>the identifier of the variable that is intended to store the result | |
| 83 | + * </dl> | |
| 84 | + * | |
| 85 | + * @param name the attribute name | |
| 86 | + * @param value the attribute value | |
| 87 | + */ | |
| 88 | + @Override | |
| 89 | + public final void addAttribute(String name, String value) { | |
| 90 | + if (name.equals("idref")) { // NON-NLS: the attribute name | |
| 91 | + this.idref = value; | |
| 92 | + } else if (name.equals("field")) { // NON-NLS: the attribute name | |
| 93 | + this.field = value; | |
| 94 | + } else if (name.equals("index")) { // NON-NLS: the attribute name | |
| 95 | + this.index = Integer.valueOf(value); | |
| 96 | + addArgument(this.index); // hack for compatibility | |
| 97 | + } else if (name.equals("property")) { // NON-NLS: the attribute name | |
| 98 | + this.property = value; | |
| 99 | + } else if (name.equals("method")) { // NON-NLS: the attribute name | |
| 100 | + this.method = value; | |
| 101 | + } else { | |
| 102 | + super.addAttribute(name, value); | |
| 103 | + } | |
| 104 | + } | |
| 105 | + | |
| 106 | + /** | |
| 107 | + * Calculates the value of this element | |
| 108 | + * if the field attribute or the idref attribute is set. | |
| 109 | + */ | |
| 110 | + @Override | |
| 111 | + public final void startElement() { | |
| 112 | + if ((this.field != null) || (this.idref != null)) { | |
| 113 | + getValueObject(); | |
| 114 | + } | |
| 115 | + } | |
| 116 | + | |
| 117 | + /** | |
| 118 | + * Tests whether the value of this element can be used | |
| 119 | + * as an argument of the element that contained in this one. | |
| 120 | + * | |
| 121 | + * @return {@code true} if the value of this element can be used | |
| 122 | + * as an argument of the element that contained in this one, | |
| 123 | + * {@code false} otherwise | |
| 124 | + */ | |
| 125 | + @Override | |
| 126 | + protected boolean isArgument() { | |
| 127 | + return true; // hack for compatibility | |
| 128 | + } | |
| 129 | + | |
| 130 | + /** | |
| 131 | + * Creates the value of this element. | |
| 132 | + * | |
| 133 | + * @param type the base class | |
| 134 | + * @param args the array of arguments | |
| 135 | + * @return the value of this element | |
| 136 | + * @throws Exception if calculation is failed | |
| 137 | + */ | |
| 138 | + @Override | |
| 139 | + protected final ValueObject getValueObject(Class<?> type, Object[] args) throws Exception { | |
| 140 | + if (this.field != null) { | |
| 141 | + return ValueObjectImpl.create(FieldElementHandler.getFieldValue(getContextBean(), this.field)); | |
| 142 | + } | |
| 143 | + if (this.idref != null) { | |
| 144 | + return ValueObjectImpl.create(getVariable(this.idref)); | |
| 145 | + } | |
| 146 | + Object bean = getContextBean(); | |
| 147 | + String name; | |
| 148 | + if (this.index != null) { | |
| 149 | + name = (args.length == 2) | |
| 150 | + ? PropertyElementHandler.SETTER | |
| 151 | + : PropertyElementHandler.GETTER; | |
| 152 | + } else if (this.property != null) { | |
| 153 | + name = (args.length == 1) | |
| 154 | + ? PropertyElementHandler.SETTER | |
| 155 | + : PropertyElementHandler.GETTER; | |
| 156 | + | |
| 157 | + if (0 < this.property.length()) { | |
| 158 | + name += this.property.substring(0, 1).toUpperCase(ENGLISH) + this.property.substring(1); | |
| 159 | + } | |
| 160 | + } else { | |
| 161 | + name = (this.method != null) && (0 < this.method.length()) | |
| 162 | + ? this.method | |
| 163 | + : "new"; // NON-NLS: the constructor marker | |
| 164 | + } | |
| 165 | + Expression expression = new Expression(bean, name, args); | |
| 166 | + return ValueObjectImpl.create(expression.getValue()); | |
| 167 | + } | |
| 168 | +} | |