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16 package org.outerj.daisy.frontend.editor;
17
18 import org.apache.cocoon.forms.validation.ValidationError;
19 import org.apache.cocoon.forms.datatype.convertor.Convertor;
20 import org.apache.cocoon.forms.datatype.convertor.ConversionResult;
21 import org.apache.xmlbeans.XmlOptions;
22 import org.apache.xmlbeans.XmlError;
23 import org.apache.xmlbeans.XmlException;
24 import org.apache.xmlbeans.XmlObject;
25 import org.apache.excalibur.xml.sax.XMLizable;
26 import org.xml.sax.ContentHandler  ;
27 import org.xml.sax.SAXException ;
28 import org.outerj.daisy.frontend.util.TaggedMessage;
29
30 import java.io.StringReader ;
31 import java.util.*;
32 import java.lang.reflect.Method ;
33 import java.lang.reflect.InvocationTargetException ;
34
35 public class XmlBeansConvertor implements Convertor {
36 private Method parseMethod;
37
38 public XmlBeansConvertor(Method parseMethod) {
39 this.parseMethod = parseMethod;
40 }
41
42 public ConversionResult convertFromString(String value, Locale locale, FormatCache formatCache) {
43 List errors = new ArrayList();
44 boolean valid;
45
46 XmlObject document = null;
47 try {
48 XmlOptions xmlOptions = new XmlOptions();
49 xmlOptions.setDocumentSourceName("edited xml");
50 xmlOptions.setErrorListener(errors);
51 xmlOptions.setLoadLineNumbers();
52 document = (XmlObject)parseMethod.invoke(null, new Object [] {new StringReader (value), xmlOptions});
53
54 xmlOptions = new XmlOptions();
55 xmlOptions.setErrorListener(errors);
56 valid = document.validate(xmlOptions);
57 } catch (InvocationTargetException e) {
58 Throwable targetException = e.getTargetException();
59 if (targetException instanceof XmlException) {
60 return new ConversionResult(validationErrorForXmlErrors(((XmlException)targetException).getErrors()));
61 } else {
62 return new ConversionResult(new ValidationError("Problem parsing navigtion tree: " + e.getMessage(), false));
63 }
64 } catch (Exception e) {
65 return new ConversionResult(new ValidationError("Problem parsing navigtion tree: " + e.getMessage(), false));
66 }
67
68 if (!valid) {
69 return new ConversionResult(validationErrorForXmlErrors(errors));
70 } else {
71 return new ConversionResult(document.toString());
72 }
73 }
74
75 private ValidationError validationErrorForXmlErrors(Collection xmlErrors) {
76 MultiMessage message = new MultiMessage();
77 message.addMessage(new TaggedMessage("title", "Error parsing or validating XML:"));
78 Iterator errorsIt = xmlErrors.iterator();
79 while (errorsIt.hasNext()) {
80 XmlError error = (XmlError)errorsIt.next();
81 message.addMessage(new TaggedMessage("error", error.getMessage()));
82 }
83 return new ValidationError(message);
84 }
85
86 public String convertToString(Object o, Locale locale, Convertor.FormatCache formatCache) {
87 return (String )o;
88 }
89
90 public Class getTypeClass() {
91 return java.lang.String .class;
92 }
93
94 public void generateSaxFragment(ContentHandler contentHandler, Locale locale) throws SAXException {
95 }
96
97 static class MultiMessage implements XMLizable {
98 private List messages = new ArrayList();
99
100 public void addMessage(XMLizable message) {
101 messages.add(message);
102 }
103
104 public void toSAX(ContentHandler contentHandler) throws SAXException {
105 Iterator messagesIt = messages.iterator();
106 while (messagesIt.hasNext()) {
107 ((XMLizable)messagesIt.next()).toSAX(contentHandler);
108 }
109 }
110 }
111
112 }
113 |
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