|
1
7 package org.jboss.xml.binding;
8
9 import org.jboss.logging.Logger;
10 import org.xml.sax.SAXException  ;
11
12 import java.io.StringWriter ;
13 import java.util.List ;
14 import java.util.Map ;
15 import java.util.HashMap ;
16 import java.util.ArrayList ;
17 import java.util.Collection ;
18 import java.util.Iterator ;
19 import java.util.Properties ;
20 import java.lang.reflect.Method ;
21 import java.lang.reflect.Array ;
22
23
29 public class SchemalessMarshaller
30 {
31 private static final Logger log = Logger.getLogger(SchemalessMarshaller.class);
32
33 public static final String PROPERTY_JAXB_SCHEMA_LOCATION = "jaxb.schemaLocation";
34
35 private final Properties props = new Properties ();
36
37 private final Map gettersPerClass = new HashMap ();
38
39 private final Content content = new Content();
40
41 public void setProperty(String name, String value)
42 {
43 props.setProperty(name, value);
44 }
45
46 public void marshal(Object root, StringWriter writer)
47 {
48 log.debug("marshal: root=" + root);
49
50 content.startDocument();
51
52 marshalObject(root, root.getClass().getName(), writer);
53
54 content.endDocument();
55
56 writer.write("<?xml version=\"");
57 writer.write("1.0");
58 writer.write("\" encoding=\"");
59 writer.write("UTF-8");
60 writer.write("\"?>\n");
61
62 ContentWriter contentWriter = new ContentWriter(writer, true);
63 try
64 {
65 content.handleContent(contentWriter);
66 }
67 catch(SAXException e)
68 {
69 log.error("Failed to write content.", e);
70 throw new IllegalStateException ("Failed to write content: " + e.getMessage());
71 }
72 }
73
74 private void marshalObject(Object root, String localName, StringWriter writer)
75 {
76 List getters = getGetterList(root.getClass());
77 AttributesImpl attrs = null; content.startElement(null, localName, localName, attrs);
79
80 for(int i = 0; i < getters.size(); ++i)
81 {
82 Method getter = (Method )getters.get(i);
83 Object child;
84 try
85 {
86 child = getter.invoke(root, null);
87 }
88 catch(Exception e)
89 {
90 log.error("Failed to invoke getter " + getter.getName() + " on " + root, e);
91 throw new IllegalStateException (
92 "Failed to invoke getter " + getter.getName() + " on " + root + ": " + e.getMessage()
93 );
94 }
95
96 if(child != null)
97 {
98 String childName = getter.getName().substring(3);
99 if(isAttributeType(child.getClass()))
100 {
101 marshalAttributeType(childName, child);
102
103
111 }
112 else if(child.getClass().isArray())
113 {
114 content.startElement(null, childName, childName, null);
115 for(int arrInd = 0; arrInd < Array.getLength(child); ++arrInd)
116 {
117 Object o = Array.get(child, arrInd);
118 marshalCollectionItem(o, o.getClass().getName(), o.getClass().getName(), writer);
119 }
120 content.endElement(null, childName, childName);
121 }
122 else if(Collection .class.isAssignableFrom(child.getClass()))
123 {
124 content.startElement(null, childName, childName, null);
125 Collection col = (Collection )child;
126 for(Iterator iter = col.iterator(); iter.hasNext();)
127 {
128 Object o = iter.next();
129 marshalCollectionItem(o, o.getClass().getName(), o.getClass().getName(), writer);
130 }
131 content.endElement(null, childName, childName);
132 }
133 else
134 {
135 marshalObject(child, childName, writer);
136 }
137 }
138 }
139
140 content.endElement(null, localName, localName);
141 }
142
143 private void marshalCollectionItem(Object o, String childName, String qName, StringWriter writer)
144 {
145 if(o != null)
146 {
147 if(isAttributeType(o.getClass()))
148 {
149 marshalAttributeType(childName, o);
150 }
151 else
152 {
153 marshalObject(o, qName, writer);
154 }
155 }
156 }
157
158 private void marshalAttributeType(String qName, Object child)
159 {
160 content.startElement(null, qName, qName, null);
161 String value = child.toString();
162 content.characters(value.toCharArray(), 0, value.length());
163 content.endElement(null, qName, qName);
164 }
165
166 private List getGetterList(Class aClass)
167 {
168 List getters = (List )gettersPerClass.get(aClass);
169 if(getters == null)
170 {
171 getters = new ArrayList ();
172 Method [] methods = aClass.getMethods();
173 for(int i = 0; i < methods.length; ++i)
174 {
175 Method method = methods[i];
176 if(method.getDeclaringClass() != Object .class)
177 {
178 if((method.getName().startsWith("get") || method.getName().startsWith("is")) &&
179 (method.getParameterTypes() == null || method.getParameterTypes().length == 0))
180 {
181 getters.add(method);
182 }
183 }
184 }
185 gettersPerClass.put(aClass, getters);
186 }
187 return getters;
188 }
189
190 static boolean isAttributeType(Class cls)
191 {
192 if(cls.isPrimitive() ||
193 cls == Byte .class ||
194 cls == Short .class ||
195 cls == Integer .class ||
196 cls == Long .class ||
197 cls == Float .class ||
198 cls == Double .class ||
199 cls == Character .class ||
200 cls == Boolean .class ||
201 cls == String .class ||
202 cls == java.util.Date .class)
203 {
204 return true;
205 }
206 else
207 {
208 return false;
209 }
210 }
211 }
212 |
Popular Tags |
Java API By Example, From Geeks To Geeks.