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1
7 package org.jboss.xb.binding.metadata.unmarshalling;
8
9 import javax.xml.namespace.QName  ;
10 import java.util.LinkedList ;
11
12
16 public interface BindingCursor
17 {
18 void startElement(String namespaceURI, String localName);
19
20 void endElement(String namespaceURI, String localName);
21
22 Object getElementBinding();
23
24 Object getParentElementBinding();
25
26 class Factory
27 {
28 private Factory()
29 {
30 }
31
32 public static BindingCursor newCursor(DocumentBinding doc)
33 {
34 return doc == null ? NoopBindingCursor.INSTANCE : new BindingCursorImpl(doc);
35 }
36
37 private static class BindingCursorImpl
38 implements BindingCursor
39 {
40 private final DocumentBinding docBinding;
41 private final LinkedList stack = new LinkedList ();
42
43 public BindingCursorImpl(DocumentBinding docBinding)
44 {
45 this.docBinding = docBinding;
46 }
47
48 public void startElement(String namespaceURI, String localName)
49 {
50 BasicElementBinding elBinding;
51 if(stack.isEmpty())
52 {
53 NamespaceBinding nsBinding = docBinding.getNamespace(namespaceURI);
54 elBinding = nsBinding.getTopElement(localName);
55 }
56 else
57 {
58 elBinding = (BasicElementBinding)stack.getLast();
59 elBinding = elBinding.getElement(new QName (namespaceURI, localName));
60 }
61 stack.addLast(elBinding);
62 }
63
64 public void endElement(String namespaceURI, String localName)
65 {
66 stack.removeLast();
67 }
68
69 public Object getElementBinding()
70 {
71 return (BasicElementBinding)stack.getLast();
72 }
73
74 public Object getParentElementBinding()
75 {
76 return stack.size() - 2 >= 0 ? (BasicElementBinding)stack.get(stack.size() - 2) : null;
77 }
78 }
79
80 private static class NoopBindingCursor
81 implements BindingCursor
82 {
83 static final BindingCursor INSTANCE = new NoopBindingCursor();
84
85 private NoopBindingCursor()
86 {
87 }
88
89 public void startElement(String namespaceURI, String localName)
90 {
91 }
92
93 public void endElement(String namespaceURI, String localName)
94 {
95 }
96
97 public Object getElementBinding()
98 {
99 return null;
100 }
101
102 public Object getParentElementBinding()
103 {
104 return null;
105 }
106 }
107 }
108 }
109 |
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