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 | import java.util.Iterator; | |
20 | ||
21 | /** | |
22 | * <p> | |
23 | * A specialized node implementation to be used in view configurations. | |
24 | * </p> | |
25 | * <p> | |
26 | * Some configurations provide a logical view on the nodes of other | |
27 | * configurations. These configurations construct their own hierarchy of nodes | |
28 | * based on the node trees of their source configurations. This special node | |
29 | * class can be used for this purpose. It allows child nodes and attributes to | |
30 | * be added without changing their parent node. So a node can belong to a | |
31 | * hierarchy of nodes of a source configuration, but be also contained in a view | |
32 | * configuration. | |
33 | * </p> | |
34 | * | |
35 | * @author <a | |
36 | * href="http://jakarta.apache.org/commons/configuration/team-list.html">Commons | |
37 | * Configuration team</a> | |
38 | * @version $Id: ViewNode.java 439648 2006-09-02 20:42:10Z oheger $ | |
39 | * @since 1.3 | |
40 | */ | |
41 | 337 | public class ViewNode extends DefaultConfigurationNode |
42 | { | |
43 | /** | |
44 | * Adds an attribute to this view node. The new attribute's parent node will | |
45 | * be saved. | |
46 | * | |
47 | * @param attr the attribute node to be added | |
48 | */ | |
49 | public void addAttribute(ConfigurationNode attr) | |
50 | { | |
51 | 47 | ConfigurationNode parent = null; |
52 | ||
53 | 47 | if (attr != null) |
54 | { | |
55 | 46 | parent = attr.getParentNode(); |
56 | 46 | super.addAttribute(attr); |
57 | 46 | attr.setParentNode(parent); |
58 | } | |
59 | else | |
60 | { | |
61 | 1 | throw new IllegalArgumentException("Attribute node must not be null!"); |
62 | } | |
63 | 46 | } |
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 | public void addChild(ConfigurationNode child) | |
72 | { | |
73 | 1555 | ConfigurationNode parent = null; |
74 | ||
75 | 1555 | if (child != null) |
76 | { | |
77 | 1554 | parent = child.getParentNode(); |
78 | 1554 | super.addChild(child); |
79 | 1554 | child.setParentNode(parent); |
80 | } | |
81 | else | |
82 | { | |
83 | 1 | throw new IllegalArgumentException("Child node must not be null!"); |
84 | } | |
85 | 1554 | } |
86 | ||
87 | /** | |
88 | * Adds all attribute nodes of the given source node to this view node. | |
89 | * | |
90 | * @param source the source node | |
91 | */ | |
92 | public void appendAttributes(ConfigurationNode source) | |
93 | { | |
94 | 395 | if (source != null) |
95 | { | |
96 | 819 | for (Iterator it = source.getAttributes().iterator(); it.hasNext();) |
97 | { | |
98 | 31 | addAttribute((ConfigurationNode) it.next()); |
99 | } | |
100 | } | |
101 | 395 | } |
102 | ||
103 | /** | |
104 | * Adds all child nodes of the given source node to this view node. | |
105 | * | |
106 | * @param source the source node | |
107 | */ | |
108 | public void appendChildren(ConfigurationNode source) | |
109 | { | |
110 | 72 | if (source != null) |
111 | { | |
112 | 576 | for (Iterator it = source.getChildren().iterator(); it.hasNext();) |
113 | { | |
114 | 434 | addChild((ConfigurationNode) it.next()); |
115 | } | |
116 | } | |
117 | 72 | } |
118 | } |