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1
17 package org.apache.servicemix.jbi.jaxp;
18
19 import org.w3c.dom.Document  ;
20 import org.w3c.dom.Element ;
21 import org.w3c.dom.Node ;
22 import org.xml.sax.SAXException ;
23
24 import javax.xml.parsers.ParserConfigurationException ;
25 import javax.xml.stream.XMLInputFactory;
26 import javax.xml.stream.XMLOutputFactory;
27 import javax.xml.stream.XMLStreamException;
28 import javax.xml.stream.XMLStreamReader;
29 import javax.xml.transform.Source ;
30 import javax.xml.transform.Transformer ;
31 import javax.xml.transform.TransformerException ;
32 import javax.xml.transform.dom.DOMResult ;
33 import javax.xml.transform.dom.DOMSource ;
34 import javax.xml.transform.sax.SAXSource ;
35
36 import java.io.IOException ;
37
38
45 public class StAXSourceTransformer extends SourceTransformer {
46
47 private XMLInputFactory inputFactory;
48 private XMLOutputFactory outputFactory;
49
50
54 public StaxSource toStaxSource(Source source) throws XMLStreamException {
55 if (source instanceof StaxSource) {
56 return (StaxSource) source;
57 }
58 else {
59 XMLInputFactory factory = getInputFactory();
60 XMLStreamReader reader = factory.createXMLStreamReader(source);
61 return new StaxSource(reader);
62 }
63 }
64
65 public XMLStreamReader toXMLStreamReader(Source source) throws XMLStreamException, TransformerException {
66 if (source instanceof DOMSource ) {
69 Node n = ((DOMSource ) source).getNode();
70 Element el = n instanceof Document ? ((Document ) n).getDocumentElement() : n instanceof Element ? (Element ) n : null;
71 if (el != null) {
72 return new W3CDOMStreamReader(el);
73 }
74 }
75 XMLInputFactory factory = getInputFactory();
76 try {
77 return factory.createXMLStreamReader(source);
78 } catch (XMLStreamException e) {
79 return factory.createXMLStreamReader(toReaderFromSource(source));
80 }
81 }
82
83 public DOMSource toDOMSource(Source source) throws ParserConfigurationException , IOException , SAXException , TransformerException {
84 DOMSource answer = super.toDOMSource(source);
85 if (answer == null && source instanceof StaxSource) {
86 answer = toDOMSourceFromStax((StaxSource) source);
87 }
88 return answer;
89 }
90
91 public SAXSource toSAXSource(Source source) throws IOException , SAXException {
92 SAXSource answer = super.toSAXSource(source);
93 if (answer == null && source instanceof StaxSource) {
94 answer = toSAXSourceFromStax((StaxSource) source);
95 }
96 return answer;
97 }
98
99 public DOMSource toDOMSourceFromStax(StaxSource source) throws TransformerException {
100 Transformer transformer = createTransfomer();
101 DOMResult result = new DOMResult ();
102 transformer.transform(source, result);
103 return new DOMSource (result.getNode(), result.getSystemId());
104 }
105
106 public SAXSource toSAXSourceFromStax(StaxSource source) {
107 return (SAXSource ) source;
108 }
109
110 public XMLInputFactory getInputFactory() {
113 if (inputFactory == null) {
114 inputFactory = createInputFactory();
115 }
116 return inputFactory;
117 }
118
119 public void setInputFactory(XMLInputFactory inputFactory) {
120 this.inputFactory = inputFactory;
121 }
122
123 public XMLOutputFactory getOutputFactory() {
124 if (outputFactory == null) {
125 outputFactory = createOutputFactory();
126 }
127 return outputFactory;
128 }
129
130 public void setOutputFactory(XMLOutputFactory outputFactory) {
131 this.outputFactory = outputFactory;
132 }
133
134 protected XMLInputFactory createInputFactory() {
137 XMLInputFactory answer = XMLInputFactory.newInstance();
138 return answer;
139 }
140
141 protected XMLOutputFactory createOutputFactory() {
142 XMLOutputFactory answer = XMLOutputFactory.newInstance();
143 return answer;
144 }
145
146 }
147 |
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