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1
15 package org.apache.hivemind.impl;
16
17 import java.util.ArrayList  ;
18 import java.util.Collections ;
19 import java.util.HashMap ;
20 import java.util.List ;
21 import java.util.Map ;
22
23 import org.apache.hivemind.Attribute;
24 import org.apache.hivemind.Element;
25 import org.apache.hivemind.util.ToStringBuilder;
26
27
32 public final class ElementImpl extends BaseLocatable implements Element
33 {
34 private String _elementName;
35 private String _content;
36 private List _elements;
37 private List _safeElements;
38 private List _attributes;
39 private Map _attributesMap;
40 private List _safeAttributes;
41
42 public void setElementName(String elementName)
43 {
44 _elementName = elementName;
45 }
46
47 public String getElementName()
48 {
49 return _elementName;
50 }
51
52 public void addAttribute(Attribute attribute)
53 {
54 if (_attributes == null)
55 {
56 _attributes = new ArrayList ();
57 _attributesMap = new HashMap ();
58 }
59
60 _attributes.add(attribute);
61 _attributesMap.put(attribute.getName(), attribute);
62 }
63
64 public void addElement(Element element)
65 {
66 if (_elements == null)
67 _elements = new ArrayList ();
68
69 _elements.add(element);
70 }
71
72 public synchronized List getAttributes()
73 {
74 if (_attributes == null)
75 return Collections.EMPTY_LIST;
76
77 if (_safeAttributes == null)
78 _safeAttributes = Collections.unmodifiableList(_attributes);
79
80 return _safeAttributes;
81 }
82
83 public String getContent()
84 {
85 if (_content == null)
86 return "";
87
88 return _content;
89 }
90
91 public synchronized List getElements()
92 {
93 if (_elements == null)
94 return Collections.EMPTY_LIST;
95
96 if (_safeElements == null)
97 _safeElements = Collections.unmodifiableList(_elements);
98
99 return _safeElements;
100 }
101
102 public String getAttributeValue(String attributeName)
103 {
104 if (_attributesMap == null)
105 return null;
106
107 Attribute a = (Attribute) _attributesMap.get(attributeName);
108
109 if (a == null)
110 return null;
111
112 return a.getValue();
113 }
114
115 public boolean isEmpty()
116 {
117 return _elements == null || _elements.size() == 0;
118 }
119
120 public void setContent(String string)
121 {
122 _content = string;
123 }
124
125 public String toString()
126 {
127 ToStringBuilder builder = new ToStringBuilder(this);
128
129 builder.append("elementName", _elementName);
130 builder.append("attributes", _attributes);
131 builder.append("elements", _elements);
132 builder.append("content", _content);
133
134 return builder.toString();
135 }
136 }
137 |
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