Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ViewNode |
|
| 3.0;3 |
1 | /* | |
2 | * Licensed to the Apache Software Foundation (ASF) under one or more | |
3 | * contributor license agreements. See the NOTICE file distributed with | |
4 | * this work for additional information regarding copyright ownership. | |
5 | * The ASF licenses this file to You under the Apache License, Version 2.0 | |
6 | * (the "License"); you may not use this file except in compliance with | |
7 | * the License. You may obtain a copy of the License at | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
16 | */ | |
17 | package org.apache.commons.configuration.tree; | |
18 | ||
19 | ||
20 | /** | |
21 | * <p> | |
22 | * A specialized node implementation to be used in view configurations. | |
23 | * </p> | |
24 | * <p> | |
25 | * Some configurations provide a logical view on the nodes of other | |
26 | * configurations. These configurations construct their own hierarchy of nodes | |
27 | * based on the node trees of their source configurations. This special node | |
28 | * class can be used for this purpose. It allows child nodes and attributes to | |
29 | * be added without changing their parent node. So a node can belong to a | |
30 | * hierarchy of nodes of a source configuration, but be also contained in a view | |
31 | * configuration. | |
32 | * </p> | |
33 | * | |
34 | * @author <a | |
35 | * href="http://commons.apache.org/configuration/team-list.html">Commons | |
36 | * Configuration team</a> | |
37 | * @version $Id: ViewNode.java 1206488 2011-11-26 16:42:41Z oheger $ | |
38 | * @since 1.3 | |
39 | */ | |
40 | 12958 | public class ViewNode extends DefaultConfigurationNode |
41 | { | |
42 | /** | |
43 | * Adds an attribute to this view node. The new attribute's parent node will | |
44 | * be saved. | |
45 | * | |
46 | * @param attr the attribute node to be added | |
47 | */ | |
48 | @Override | |
49 | public void addAttribute(ConfigurationNode attr) | |
50 | { | |
51 | 3624 | ConfigurationNode parent = null; |
52 | ||
53 | 3624 | if (attr != null) |
54 | { | |
55 | 3623 | parent = attr.getParentNode(); |
56 | 3623 | super.addAttribute(attr); |
57 | 3623 | attr.setParentNode(parent); |
58 | } | |
59 | else | |
60 | { | |
61 | 1 | throw new IllegalArgumentException("Attribute node must not be null!"); |
62 | } | |
63 | 3623 | } |
64 | ||
65 | /** | |
66 | * Adds a child node to this view node. The new child's parent node will be | |
67 | * saved. | |
68 | * | |
69 | * @param child the child node to be added | |
70 | */ | |
71 | @Override | |
72 | public void addChild(ConfigurationNode child) | |
73 | { | |
74 | 26823 | ConfigurationNode parent = null; |
75 | ||
76 | 26823 | if (child != null) |
77 | { | |
78 | 26822 | parent = child.getParentNode(); |
79 | 26822 | super.addChild(child); |
80 | 26822 | child.setParentNode(parent); |
81 | } | |
82 | else | |
83 | { | |
84 | 1 | throw new IllegalArgumentException("Child node must not be null!"); |
85 | } | |
86 | 26822 | } |
87 | ||
88 | /** | |
89 | * Adds all attribute nodes of the given source node to this view node. | |
90 | * | |
91 | * @param source the source node | |
92 | */ | |
93 | public void appendAttributes(ConfigurationNode source) | |
94 | { | |
95 | 10552 | if (source != null) |
96 | { | |
97 | 10551 | for (ConfigurationNode attr : source.getAttributes()) |
98 | { | |
99 | 3086 | addAttribute(attr); |
100 | } | |
101 | } | |
102 | 10552 | } |
103 | ||
104 | /** | |
105 | * Adds all child nodes of the given source node to this view node. | |
106 | * | |
107 | * @param source the source node | |
108 | */ | |
109 | public void appendChildren(ConfigurationNode source) | |
110 | { | |
111 | 4270 | if (source != null) |
112 | { | |
113 | 4269 | for (ConfigurationNode child : source.getChildren()) |
114 | { | |
115 | 9827 | addChild(child); |
116 | } | |
117 | } | |
118 | 4270 | } |
119 | } |