|
1
17 package org.apache.ws.jaxme.xs.parser.impl;
18
19 import java.lang.reflect.InvocationTargetException  ;
20 import java.lang.reflect.Method ;
21 import java.lang.reflect.Modifier ;
22 import java.lang.reflect.UndeclaredThrowableException ;
23
24 import org.apache.ws.jaxme.xs.XSParser;
25 import org.apache.ws.jaxme.xs.parser.*;
26 import org.xml.sax.ContentHandler ;
27 import org.xml.sax.SAXException ;
28
29
30
34 public class ChildSetterImpl implements ChildSetter {
35 private static final Class [] GETCHILDHANDLER_CLASSES = new Class []{String .class, String .class, String .class};
36 private static final Class [] ZERO_CLASSES = new Class []{};
37 private static final Object [] ZERO_OBJECTS = new Object []{};
38
39 private XSContext getData() {
40 return XSParser.getRunningInstance().getContext();
41 }
42
43
46 protected Object invokeMethod(Object pBean, Method pMethod, String pName, Object [] pArgs) throws SAXException {
47 try {
48 return pMethod.invoke(pBean, pArgs);
49 } catch (InvocationTargetException e) {
50 Throwable t = e.getTargetException();
51 if (t instanceof RuntimeException ) {
52 throw (RuntimeException ) t;
53 } else if (t instanceof SAXException ) {
54 throw (SAXException ) t;
55 } else {
56 throw new UndeclaredThrowableException (t);
57 }
58 } catch (IllegalAccessException e) {
59 throw new IllegalStateException ("Failed to invoke method " + pMethod.getName() +
60 " of class " + pMethod.getDeclaringClass() +
61 " with argument " + pBean + ": IllegalAccessException, " +
62 e.getMessage());
63 }
64 }
65
66
67 public ContentHandler getChildHandler(String pQName,
68 String pNamespaceURI, String pLocalName) throws SAXException {
69 final XsSAXParser xsSAXParser = (XsSAXParser) getData().getCurrentContentHandler();
70 if (xsSAXParser == null) {
71 throw new NullPointerException ("No XsSAXParser registered.");
72 }
73 final Object bean = xsSAXParser.getBean();
74 final Class beanClass = bean.getClass();
75 try {
76 Method m = beanClass.getMethod("getChildHandler", GETCHILDHANDLER_CLASSES);
77 if (Modifier.isPublic(m.getModifiers()) &&
78 ContentHandler .class.isAssignableFrom(m.getReturnType())) {
79 Object result = (ContentHandler ) invokeMethod(bean, m, pQName, new Object []{pQName, pNamespaceURI, pLocalName});
80 if (result != null) {
81 return (ContentHandler ) result;
82 }
83 }
84 } catch (NoSuchMethodException e) {
85 }
86
87 final ContentHandler result = getChildHandler(xsSAXParser, pQName, pLocalName);
88 if (result == null) {
89 throw new LocSAXException("Unknown child element '" + pQName + "' for bean " + bean.getClass().getName(),
90 getData().getLocator());
91 }
92 return result;
93 }
94
95
98 protected ContentHandler newXsSAXParser(XsSAXParser pParent, Object pBean) {
99 return getData().getXsObjectFactory().newXsSAXParser(pBean);
100 }
101
102 protected ContentHandler getChildHandler(ContentHandler pParent, String pQName, String pLocalName)
103 throws SAXException {
104 final XsSAXParser xsSAXParser = (XsSAXParser) pParent;
105 final Object bean = xsSAXParser.getBean();
106 final Class beanClass = bean.getClass();
107 final String s = Character.toUpperCase(pLocalName.charAt(0)) + pLocalName.substring(1);
108 try {
109 Method m = beanClass.getMethod("create" + s, ZERO_CLASSES);
110 if (Modifier.isPublic(m.getModifiers()) &&
111 !void.class.equals(m.getReturnType())) {
112 Object result = invokeMethod(bean, m, pQName, ZERO_OBJECTS);
113 return newXsSAXParser(xsSAXParser, result);
114 }
115 } catch (NoSuchMethodException e) {
116 } catch (SAXException e) {
117 throw e;
118 }
119
120 return null;
121 }
122 }
123 |
Popular Tags |
Java API By Example, From Geeks To Geeks.