Showing the changes to java/pkg/com/sun/beans/decoder/AccessorElementHandler.java (1 of 18352 files). Show all
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| 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 | +/** | |
| 28 | + * This is base class that simplifies access to entities (fields or properties). | |
| 29 | + * The {@code name} attribute specifies the name of the accessible entity. | |
| 30 | + * The element defines getter if it contains no argument | |
| 31 | + * or setter if it contains one argument. | |
| 32 | + * | |
| 33 | + * @since 1.7 | |
| 34 | + * | |
| 35 | + * @author Sergey A. Malenkov | |
| 36 | + */ | |
| 37 | +abstract class AccessorElementHandler extends ElementHandler { | |
| 38 | + private String name; | |
| 39 | + private ValueObject value; | |
| 40 | + | |
| 41 | + /** | |
| 42 | + * Parses attributes of the element. | |
| 43 | + * The following atributes are supported: | |
| 44 | + * <dl> | |
| 45 | + * <dt>name | |
| 46 | + * <dd>the name of the accessible entity | |
| 47 | + * <dt>id | |
| 48 | + * <dd>the identifier of the variable that is intended to store the result | |
| 49 | + * </dl> | |
| 50 | + * | |
| 51 | + * @param name the attribute name | |
| 52 | + * @param value the attribute value | |
| 53 | + */ | |
| 54 | + @Override | |
| 55 | + public void addAttribute(String name, String value) { | |
| 56 | + if (name.equals("name")) { // NON-NLS: the attribute name | |
| 57 | + this.name = value; | |
| 58 | + } else { | |
| 59 | + super.addAttribute(name, value); | |
| 60 | + } | |
| 61 | + } | |
| 62 | + | |
| 63 | + /** | |
| 64 | + * Adds the argument that is used to set the value of this element. | |
| 65 | + * | |
| 66 | + * @param argument the value of the element that contained in this one | |
| 67 | + */ | |
| 68 | + @Override | |
| 69 | + protected final void addArgument(Object argument) { | |
| 70 | + if (this.value != null) { | |
| 71 | + throw new IllegalStateException("Could not add argument to evaluated element"); | |
| 72 | + } | |
| 73 | + setValue(this.name, argument); | |
| 74 | + this.value = ValueObjectImpl.VOID; | |
| 75 | + } | |
| 76 | + | |
| 77 | + /** | |
| 78 | + * Returns the value of this element. | |
| 79 | + * | |
| 80 | + * @return the value of this element | |
| 81 | + */ | |
| 82 | + @Override | |
| 83 | + protected final ValueObject getValueObject() { | |
| 84 | + if (this.value == null) { | |
| 85 | + this.value = ValueObjectImpl.create(getValue(this.name)); | |
| 86 | + } | |
| 87 | + return this.value; | |
| 88 | + } | |
| 89 | + | |
| 90 | + /** | |
| 91 | + * Returns the value of the entity with specified {@code name}. | |
| 92 | + * | |
| 93 | + * @param name the name of the accessible entity | |
| 94 | + * @return the value of the specified entity | |
| 95 | + */ | |
| 96 | + protected abstract Object getValue(String name); | |
| 97 | + | |
| 98 | + /** | |
| 99 | + * Sets the new value for the entity with specified {@code name}. | |
| 100 | + * | |
| 101 | + * @param name the name of the accessible entity | |
| 102 | + * @param value the new value for the specified entity | |
| 103 | + */ | |
| 104 | + protected abstract void setValue(String name, Object value); | |
| 105 | +} | |