1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.tuscany.sca.policy.xml;
import javax.xml.namespace.NamespaceContext;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
/**
* Represents an XML attribute that needs to be written to a document.
*
*/
class XAttr {
String uri = PolicyConstants.SCA10_NS;
String name;
Object value;
public XAttr(String uri, String name, String value) {
this.uri = uri;
this.name = name;
this.value = value;
}
public XAttr(String name, String value) {
this.name = name;
this.value = value;
}
public XAttr(String uri, String name, boolean value) {
this.uri = uri;
this.name = name;
this.value = value;
}
public XAttr(String name, boolean value) {
this.name = name;
this.value = value;
}
public XAttr(String uri, String name, QName value) {
this.uri = uri;
this.name = name;
this.value = value;
}
public XAttr(String name, QName value) {
this.name = name;
this.value = value;
}
/**
* Writes a string from a qname and registers a prefix for its namespace.
* @param reader
* @param value
* @return
*/
protected String writeQNameValue(XMLStreamWriter writer, QName qname) throws XMLStreamException {
if (qname != null) {
String prefix = qname.getPrefix();
String uri = qname.getNamespaceURI();
prefix = writer.getPrefix(uri);
if (prefix != null) {
// Use the prefix already bound to the given uri
return prefix + ":" + qname.getLocalPart();
} else {
// Find an available prefix and bind it to the given uri
NamespaceContext nsc = writer.getNamespaceContext();
for (int i=1; ; i++) {
prefix = "ns" + i;
if (nsc.getNamespaceURI(prefix) == null) {
break;
}
}
writer.setPrefix(prefix, uri);
writer.writeNamespace(prefix, uri);
return prefix + ":" + qname.getLocalPart();
}
} else {
return null;
}
}
void write(XMLStreamWriter writer) throws XMLStreamException {
if (value != null) {
String str;
if (value instanceof QName) {
str = writeQNameValue(writer, (QName)value);
} else {
str = String.valueOf(value);
}
if (uri != null && !uri.equals(PolicyConstants.SCA10_NS)) {
writer.writeAttribute(uri, name, str);
} else {
writer.writeAttribute(name,str);
}
}
}
}
|
