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1
5 package org.exoplatform.commons.debug;
6
7 import java.util.* ;
8 import java.lang.reflect.Field  ;
9
15 public class ObjectDebuger {
16 static public void printObject(Object o) throws Exception {
17 System.out.println(asString(o)) ;
18 }
19
20 static public String asString(Object o) {
21 StringBuffer b = new StringBuffer () ;
22 try {
23 Map map = new HashMap(100) ;
24 if(o instanceof Collection) printCollection(map, (Collection)o, b, "") ;
25 else if(o instanceof Map) printCollection(map, ((Map)o).values(), b, "") ;
26 else printObject(map, o, b, "") ;
27 } catch (Exception ex) {
28 ex.printStackTrace() ;
29 b.append("\n").append(ex.getMessage()) ;
30 }
31 return b.toString() ;
32 }
33
34 static private void printObject(Map printedObjects, Object o, StringBuffer b, String indent) throws Exception {
35 if(o == null) return ;
36 if(printedObjects.containsKey(o)) return ;
37 printedObjects.put(o, o) ;
38 Class clazz = o.getClass() ;
39 Field [] fields = clazz.getDeclaredFields() ;
40 b.append(indent).append("object: " + getClassName(clazz)).append("\n") ;
41 indent = indent + " " ;
42 for(int i = 0; i < fields.length; i++) {
43 if(fields[i].getDeclaringClass().getName().startsWith("java")) continue ;
44 Class type = fields[i].getType() ;
45 fields[i].setAccessible(true);
46 if(type.equals(String .class)) {
47 String s = (String )fields[i].get(o) ;
48 if(s == null) s = "" ;
49 if(s.length() > 50 ) s = s.substring(0, 50) + "...\n" ;
50 b.append(indent).append(fields[i].getName()).append(": ").append(s).append("\n") ;
51 } else if(type.equals(Boolean .class) || type.equals(Boolean.TYPE) ||
52 type.equals(Integer .class) || type.equals(Integer.TYPE) ||
53 type.equals(Long .class) || type.equals(Long.TYPE) ||
54 type.equals(Float .class) || type.equals(Float.TYPE) ||
55 type.equals(Double .class) || type.equals(Double.TYPE)) {
56 Object value = fields[i].get(o) ;
57 b.append(indent).append(fields[i].getName()).append(": ").append(value).append("\n");
58 } else {
59 Object value = fields[i].get(o) ;
60 if(value instanceof Collection) {
61 b.append(indent).append(fields[i].getName()).append("[Collection]\n");
62 printCollection(printedObjects, (Collection) value, b, indent + " ") ;
63 } else if(value instanceof Map) {
64 b.append(indent).append(fields[i].getName()).append("[Map]\n");
65 printCollection(printedObjects, ((Map)value).values(), b, indent + " ") ;
66 } else {
67 printObject(printedObjects, value, b, indent) ;
68 }
69 }
70 }
71 }
72
73 static private void printCollection(Map printedObjects, Collection c,
74 StringBuffer b, String indent) throws Exception {
75 Iterator i = c.iterator() ;
76 while(i.hasNext()) {
77 Object o = i.next() ;
78 printObject(printedObjects,o, b, indent) ;
79 }
80 }
81
82 static private String getClassName(Class clazz) {
83 String name = clazz.getName() ;
84 int idx = name.lastIndexOf(".") ;
85 if(idx > 0) name = name.substring(idx + 1, name.length()) ;
86 return name ;
87 }
88 } |
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